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The Company
T.D. Cross Ltd., reserve the right to change without notification dimensional and/or product specification shown in this catalogue, and to add or delete any product fromthe range in the interests of product development.All products shown in this catalogue are offered subject to the standard “Terms and Conditions of Sale”, copies on request. T.D. Cross Ltd., reserve copyright of thiscatalogue. No part thereof may be reproduced without prior permission.
Cross & Morse was established in 1984 through the amalgamation of two long standing and well respectedcompanies in the Power Transmission Industry, T.D. Cross and Morse Chain.
T.D. Cross & Sons was founded in 1870 in Birmingham, concentrating in the production of bicycle components underthe direction of the Cross family. They moved to the current factory site in 1950 and developed into production of apopular range of roller chain sprockets and gearing. The competitive pricing and quality of product soon establishedthe Company as a major supplier to both Agricultural and Industrial markets.
The Morse Chain Company was founded in 1894 also for the manufacture of bicycles in Pennsylvania, U.S.A. Thecompany moved into production of inverted tooth chain drives and established a manufacturing plant in London in1907, moving to the new Garden City of Letchworth, Herts. in 1918. The product range in the U.K. was developed toinclude Roller Chain and Sprockets, Couplings, Torque Limiters, Sprag Clutches and Timing Belt Drives, whilst in theU.S.A. by acquisition Morse also included the Denver Gearbox Range and the Sealmaster Bearing Products.
In 1987 Cross & Morse closed the Letchworth plant and centralised all production at the 10,000 sq. metre factory inGreat Barr, Birmingham where current production of Roller Chains, Sprockets, Gears, Timing Belt Pulleys, TorqueLimiters, Sprag Clutches and other specialised power transmission equipment is undertaken. In addition tomanufactured products, Cross & Morse are main agents for Morse-Emerson, U.S.A.; and Stieber Formsprag,Germany; providing an extensive range of power transmission products.
The company operates a policy of continued assessment to develop and improve its products and customer service.In pursuance of these objectives Cross & Morse has been successfully assessed by Lloyds, and is registered, as anapproved manufacturer of power transmission products to BS EN ISO 9001.
Timing Belts Index
CROSS+MORSE
Power Transmission Solutions
2weivrevO sevirD tleBBelt Drive Selection:
- Metric & Classical Belts 3-972-62stleB raeniL neerG -83stleB enahteruyloP -01noitallatsnI tleB54setalP gnipmalC
Classical Timing Belts and Pulleys 28-36Classic Belts:
30-92eg (XL, L, H)naR dradnatS -31Double Sided (XL, L, H) -
Classical Timing Belt Pulleys:32-34)H,LL,X( eroB toliP -35-36)H,L( eroB repaT -
Metric Timing Belts and Pulley 11-23Metric Belts:
- 11-14e (3M, 5M, 8M)gnaR dradnatS- 15-16Double Sided (5M, 8M, 14M)- Green Power Open Ended Belts 26-29
Metric Timing Belt Pulleys:- Pilot Bore (3M, 5M, 8M, 14M) 17-20 - Taper Bore (5M, 8M, 14M) 21-22
Polyurethane Timing Belts and Pulleys 37-44Platinum Timing Belts 46
Polyurethane Belts:39e (T2.5, T5, T10, AT5, AT10)gnaR dradnatS -44 stleB dednE nepO -
Polyurethane Timing Belt Pulleys:- Pilot Bore (T2.5, T5, T10, AT5, AT10) 40-43
T 24-25sehsuB eroB repaSpecial Belts 32
T 54sraB gnimiT 74gnitoohS elbuor
Timing Belt Catalogue_Cross + Morse 14/12/2010 12:17 Page 1
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Timing Belt Drives
2
Cross & Morse Timing Belt Drives take their place in industry as ahighly efficient, job proven medium for mechanical powertransmission. Because these drives combine many importantexclusive characteristics, they present an entirely different conceptin the transmission of power. They are highly versatile in application and speed range.Timing belt drives are positive and offer accurate synchronisationof speed, and often make possible worthwhile economies in thedesign of a machine, because they require less space, reducebearing specification, eliminate tension devices, yet assure anunusually high degree of efficiency.Virtually every industry has tested and approved timing beltdrives. They have been adopted as standard equipment by a widevariety of machine builders and equipment manufacturers.Millions of successful drives in operation without belt replacementfor more than five years bear testimony to these drives. Cross &Morse offer three types of timing belt drive to cover the fullspectrum of industrial requirements.
These are the original tooth belt drives, introduced for thetransmission of low torque instrumentation drives more than fortyyears ago, and since developed and adopted for millions of driveapplications. Eight different pitch configurations were produced,but later belt designs have eliminated the demand for all but threesizes. Cross & Morse offer complete drives to 1/5” (XL), 3/8” (L),and 1/2” (H) pitch sizes with both pilot bored and taper boredpulleys. Drives to other configurations can be supplied to order.The Classical Timing Belt is the ideal low cost drive for powers upto 25 KW with a wide range of both belts and pulleys availablefrom stock. Double sided belts and open ended belts can also besupplied.
The Classical Timing Belt Drives pages 29-36
Demands for ever increasing powers and speeds led to theintroduction of a Metric Series of High Torque Drive Belts, using aparabolic tooth profile to enable increased tooth contact betweenbelt and pulley. The new tooth profile has improved shear stressresistance, increased power capacity, and reduced noise levels.Pirelli introduced the RPP belt with an indentation at the top ofthe teeth, to allow local elastic deformation during meshing withpulley, and easier air discharge to further reduce noise levels.Cross and Morse combine RPP belts with std. Metric pulleys toprovide off-shelf drives in 4 pitches; 3mm (3M), 5mm (5M), 8mm(8M), and 14mm (14S).Further development created RPP Silver Belts in 8mm (8S) and14mm (14S) pitch with double power capacity; and Panther Beltsin 8mm (8G) and 14mm (14G) pitch with treble capacity; both stilloperating on standard metric pulleys allowing fullinterchangeability with existing drives. Drives up to 600 KW cannow be transmitted.
The Metric Series Belt Drives pages 11-22
These belts use steel tension cord encased in a polyurethane jacketwith integral teeth. The method of manufacture ensures tightcontrol of pitch length for applications where accurate positioningis required. Polyurethane is a non-crumbling, non-markingmaterial with excellent resistance to mineral oils, greases and lightacidic solutions making it an ideal material for food applications,on cigarette manufacturing machines and paper transportingsystems. Polyurethane belt drives are available in 3 pitch sizes,2.5mm (T2.5), 5mm (T5) and 10mm (T10), with a selection of pilotbore pulleys.Double sided belts and long open end belt lengths are alsoavailable. For reciprocating drives clamping plates are available toretain the belts.
Polyurethane Timing Belt Drives pages 37-44
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a. Determine Belt LengthFor drives with pulleys of equal numbers of teeth.Calculate Number Teeth in Belt Nc = 2. Ao + Z1
pFor drives with pulleys of dissimilar numbers of teeth.Calulate Number Teeth in BeltNc = 2.Ao + (Z1+ Z2) + 2.533p (Z2 - Z1)
Where Ao = Approximimate Centre Distance mmp = Belt Pitch mmZ1 = Number Teeth Small PulleyZ2 = Number Teeth Large Pulley
Note: Nc must always be greater than 0.9 (Z1 + Z2)Refer to standard Belt Tables (pages 12-13 Metric Drives,page 30-31 Classical) and select nearest belt length to numbers ofteeth calculated.
b. Determine Actual Shaft CentresThe actual centre distance A can then be determined from thefollowing formula where NA is number of teeth in beltselected.
A =p/4 (NA - Z1 + Z2 + (NA - Z1 + Z2) -2.027 (Z2-Z1) )
This will provide a reasonably accurate result but for fixed centredrives please contact Cross & Morse Engineering.
6. Factors to correct for Teeth in Mesh andBelt Length
a. Teeth in mesh factor f5
Applicable only on drives with pulleys less than 18 teeth ordrive ratio greater than 3: 1. For a belt to transmit full powera minimum of 6 teeth must be in mesh on each pulley. Thenumber of teeth in mesh can determined from thefollowing formula:
Number Teeth in Mesh (TIM)= Z1 [0.5 - (Z2 - Z1)p]18.85A
The Design Power Pd must be multiplied by factor f5 taken from table 2a.
b. Belt Length Correction factor - f6To allow for variation in rates of loading a belt length factor f6 isapplied to the Design Power Pd for final selection power Ps. Thefactors, provided in table 4, only apply to HTD drives, for Classical timing belt drives f6 = 1. Thus:-Selection Power Ps = Pd . f5 . f6
7. Belt Width SelectionHaving determined Selection Power Ps, and knowing the size ofsmall pulley and relative shaft speed use the Rating Tables onpages 7-9 to determine Rated Power Pr. which is where appropriate columns for pulley size and shaft speed intersect intable for selected belt size. If a column for the actual shaft speed isnot available use the next lower speed available, and if shaft speedis below 100r.p.m. use column for 100 r.p.m., but multiply powerread off by actual shaft speed divided by 100. A belt width factorWf can then be determined by dividing the Selection Power Ps bythe Rated Power Pr.
Wf = PsPr
From the table immediately above the relevant Power Rating Table select the belt width which has a width factor equalor greater thanthe value calculated for Wf.
8. Confirmation of DriveRefer to pulley tables 14-21 (HTD Drives) or 29-33(Classical Belts) to confirm that pulley sizes (numbers of teeth andwidth) are available, and capable of accommodating shaft sizes,and that at least one pulley is of flanged construction. If belt speedexceeds 30M/S ensure no cast iron pulleys used; also pulleysshould be balanced.Ensure that calculated centre A can be accomodatedwith adjustment to correctly tension belt on assembly, and toenable belt to be fitted over pulley flanges if applicable, referto page 10.
Timing Belt Drive Selection
In order to select a Timing Belt Drive it is first necessary tocompile together all the relevant design parameters, to include:-
a. Type of driver, shaft speed, and power to be transmitted.b. Type of driven machinery, shaft speed or drive ratio.c. Approximate shaft centre distance required.d. Number of hours daily, drive will be used, and any special
operating conditions (temperature, abrasive dust, etc.).e. Shaft diameters and any space restrictions affecting pulley
diameters or widths.
With this information a suitable drive can be selected by theselection procedure in conjuction with the following guidelines:
a. Power transmission capabilities are always related to thesmallest pulley in the system, regardless of whether it is thedriving or driven pulley.
b. Where there is a choice of pulley combination for a givendrive consideration should be given to the following:-1. Larger pulleys reduce amount of belt flexing and therefore
improve belt life.2. Larger pulleys often enable use of narrower belts.3. Large pulleys can be more expensive.
c. There must be at least one flanged pulley in the drive, andwhere centre distance is more than 8 times the diameter ofthe smaller pulley, both pulleys should be flanged.
d. If shaft centre adjustment is inadequate to correctly tensionthe belt, an idler pulley will be required. It is preffered to runidlers on the back of the belt, when a ground back belt shouldbe used.
e. Cast Iron pulleys must not be used on drives where beltspeeds exceed 30 metres per second.
Selection Procedure1. Drive RatioWhere not known this can be obtained by dividing the speed of the faster shaft by the speed of the slower shaft. Note if the driven shaft is faster this is a Speed Increasing Drive.
2. Calculate the Design PowerThe design Power Pd is determined by multiplying thetransmitted motor power P by the application factors f1, f2, f3 and f4 as applicable.
Pd = P(f1 + f3 - f4) f2
Application Factor f1 - Service Factor- relates the type of driver anddriven equipment to the daily useage, refer Table 1.
Application Factor f2 - Speed Increasing Drives - refer Table 2 for factorrelevent to respective speed increase ratio.
Application Factor f3 - If an idler is used add 0.2.
Application Factor f4 - If machinery only used intermittently orseasonally deduct 0.2 from service factor.
3. Select Belt PitchApplying the calculated Design Power and the speed of the smallestpulley to the graphs on pages 5-6 to select suitable belt pitch for theapplication. Using this pitch of belt should provide a wellproportioned drive, but where space limitations apply, another pitchof belt may be required. Both Metric (HTD) and Classical Belt Drivesare available for selection. Generally HTD Belts provide a morecompact, quieter drive, and are preffered for new applications,however classical belts offer a wider selection of drive ratios with std.pulleys, and for one-off drives often a lower cost.
4. Pulley SelectionRefer to Standard Drive Ratios - Table 3 and select a suitablecombination of pulleys to provide the correct drive ratio. Foreconomic and availability reasons it is preferable to use pulleys ofmaximum 80 teeth, and to minimise belt fatigue a minimum of 20Teeth (28 Teeth 14M drives).From the appropiate pulley dimension tables confirm that pulleysizes selected are available and will accommodate shaft diametersand not exceed space limitations.
5. Determine Belt Length and Center DistanceHaving selected belt size (pitch), numbers of teeth in pulleys, andknowing approximate shaft centres one can select belt length andcalculate actual centre distance.
p 2 100Ao
2 2
101022
2
3
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0.90
261- 400551- 800
901- 12702051- 2500
_
_
_
____
_
_
_
The machines listed below are representative examples only. Select the classwhose load characteristics most closely approximate those of the machine being used. For drives with heavy pulsating or high shock loads, consultCross & Morse.
Timing Belt Drives Selection
Table 1 - Service Factors - f1
4
DRIVEN MACHINE (LOAD)
Table 2 - Speed Increase Factor - f2 Table 2a - Teeth in mesh Factor - f5
Table 4 - Belt Length Factor - f6 - HTD Drives
DRIVEN MACHINE (LOAD) TYPES OF DRIVER
Electric Motor AC - Star Delta startDC - Shunt Wound
Internal Combustion Engines and other prime moves fitted with Centrifugal Clutches. Dry or Fluid Couplings orElecronic Soft Start Start Devices.
Smooth
MediumShock
HighShock
HeavyShock
LightShock
LoadType Typical Machinery
‘SOFT STARTS’ ‘HEAVY STARTS’
Electric Motor AC - Direct-on-Line startDC - Series and Compound Wound
Hydraulic MotorsInternal Combustion Engines with Mechanicl DrivePrime movers not fitted with soft start devices
Operating Hours per DayOperating Hours per Day
under 10 10-16 Over 16 under 10 10-16 Over 16
Business Equipment. Light Domestic Machinery,Tachometers, Camera and Radar Equipment
Liquid Agitators, Centrifugal Pumps andCompressors, Uniformly Loaded Belt Conveyors,Fans up to 71/2 kW, Calenders. Rotary Screens,Dryers, Exhausters, Woodworking Machinery.
Mixers, Belt Conveyors. Fans over 71/2 kW,Generators, Vibrating Screens, Augers,Granulators, Laundry and Printing Machinery,Machine Tools.
Bucket, Pan and Screw Conveyors,Reciprocating Pumps and Compressors,Exciters, Paper and Textile Machinery.
Mills, Crushers, Hoists, Dredge Pumps,Brickwork and Rubber Machinery, Oil FieldEquipment.
1.0
1.3
1.5
1.7
1.9
1.2
1.4
1.7
1.9
2.0
1.4
1.6
1.9
2.0
2.1
1.2
1.6
1.9
2.0
2.2
1.6
1.8
2.0
2.2
2.3
1.8
2.0
2.2
2.3
2.4
Speed IncreaseDrive Ratio
Factor f2
1.00to
1.24
1.00
1.25to
1.74
1.06
1.25to
1.74
1.06
1.75to
2.49
1.12
2.50to
3.49
1.18
3.50and
above
1.25
TIM 6+ 5 - 6 4 - 5 3 - 4 below 3
f5 1.00 1.25 1.65 2.5 5.0
Table 3 - Drive Ratios with Standard Pulleys
10 12 13* 14 15 16 17* 18 19 20 21 22 24 26 28 30 32 34 36 38
Number Teeth on Small Driver Pulley
1213*1415
1617*181920
2122242628
3032343638
4044485660
6472808490
96112 144168192
N0. T
eeth
on
Larg
e -
Driv
en P
ulle
y
1.201.301.401.50
1.601.701.801.902.00
2.102.202.402.602.80
3.003.20
3.60
4.004.404.80
6.00
7.20
8.40
9.60____
_
_
_
_
_
_ _
_
1.001.081.171.25
1.331.421.501.581.67
1.751.832.002.172.33
2.502.67
3.00
3.333.674.00
5.00
6.00
7.00
8.00
_
____
_
_
_
_
_
1.001.081.15
1.231.311.381.461.54
1.611.691.852.002.15
2.312.46
2.77
3.083.383.69
4.61
5.54
6.46_
____
_
_
_
_
_
_
1.001.07
1.141.211.291.361.43
1.501.571.712.862.00
2.142.29
2.57
2.863.143.43
4.29
5.14
6.00
6.86
_
____
_
_
_
_
_
1.001.061.131.191.25
1.311.381.501.631.75
1.882.00
2.25
2.502.753.00
3.75
4.50
5.25
6.00
_
____
_
_
_
_
_
1.00
1.071.131.201.271.33
1.401.471.601.731.87
2.002.13
2.40
2.672.933.20
4.00
4.80
5.60
6.40
_
____
_
_
_
_
_
1.001.061.121.18
1.231.291.411.531.65
1.761.88
2.12
2.352.592.82
3.53
4.24
4.94_
____
_
_
_
_
_
_
1.001.061.11
1.171.221.331.441.56
1.671.77
2.00
2.222.442.67
3.33
4.00
4.67
5.33
_
____
_
_
_
*13 & 17 Tooth Pulleys available‘L’ Series Pulleys only
40
1.00
1.051.101.201.301.40
1.501.60
1.80
2.002.202.40
3.00
3.60
4.20
4.80
1.001.051.141.241.33
1.431.52
1.71
1.902.102.29
2.86
3.43
4.00
4.57
_
_
_
____
_
_
_
_
_
_
____
_
_
_
1.001.05
1.101.161.261.371.48
1.581.68
1.89
2.112.322.53
3.16
3.79
4.42
5.05
1.001.091.181.27
1.361.451.551.641.73
1.822.002.182.552.73
2.913.273.643.824.09
4.365.096.557.648.73
1.001.081.16
1.251.331.421.501.58
1.671.832.002.332.50
2.673.003.333.503.75
4.004.676.007.008.00
1.001.08
1.151.231.311.381.46
1.541.691.852.152.31
2.462.773.083.233.46
3.694.315.546.467.38
1.00
1.071.141.211.291.36
1.431.571.712.002.14
2.292.572.863.003.21
3.434.005.146.006.86
1.001.071.131.201.27
1.331.471.601.872.00
2.132.402.672.803.00
3.203.734.805.606.40
1.001.061.121.19
1.251.371.501.751.87
2.002.252.502.622.81
3.003.504.505.256.00
1.001.061.12
1.181.291.411.65
1.882.122.35
2.65
3.294.234.945.65
1.001.06
1.111.221.331.561.67
1.782.002.222.332.50
2.673.114.004.675.33
_
_
_
1.00
1.051.161.261.471.58
1.681.892.11
2.37
2.953.794.425.05
_
_
1.001.101.201.401.50
1.601.802.002.102.25
2.402.803.604.204.80
3M5M8M
14M
Factor f6 1.25
up to 190up to 440up to 630up to 1350
191- 260441- 550631- 900
1351- 1770
1.11 1.0 0.95
2501-3400
401- 600801- 1100
1271- 17903401+
0.85
601+1101+1791+
1.05
1771-2050
Belt Length mmBelt Size Pitch
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5
Shaft Speed Smaller Pulley - R.P.M.
0.1
30
40
50
70
7,00
0
Des
ign
Pow
er k
WBelt Selection Graph forClassical Series Belts
10 20 30 40 50 100
200
400
500
700
1,00
0
2,00
0
3,00
0
4,00
0
10,0
0070
12,0
00
5,00
0
300
XL
L
H
0.3
0.4
0.5
0.7
1.0
2
3
4
5
0.2
7
20
10
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Shaft Speed Smaller Pulley - R.P.M.6
10,0
0010 20
700
500
400
300
200
100
70
50
40
30
20
10
7
5
4
3
2
1.0
0.7
0.5
0.4
0.3
0.2
0.1
30 40 50 70 100
200
300
400
500
700
1,00
0
2,00
0
3,00
0
4,00
0
5,00
0
7,00
0
Des
ign
Pow
er k
W
3M
14G
14S
14M
8G
8S
8M
5M
Belt Selection Graph forMetric Series Belts
15,0
00
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100200300400500600800
10001200150018002000240028003000350040004500
20Belt Width mm 8M Belt
1.00
30
1.58
50
2.74
RPM
of S
mal
l Pul
ley
100200300500600800
100012001500180020002400280032004000500060008000
100001200014000
Number of Teeth on Small Pulley
12 14 15 16 18 20 21 22 24 26 28 30 32 36 40 44 48 60
.023
.039
.053
.078
.090
.111
.132
.151
.178
.204
.221
.253
.285
.314
.370
.435
.495
.603
.695
.027
.046
.062
.091
.105
.130
.154
.176
.208
.239
.258
.296
.332
.366
.432
.508
.578
.704
.811
.899
.966
.029
.049
.066
.098
.113
.141
.167
.192
.226
.260
.280
.321
.360
.398
.470
.555
.627
.762
.873
.9651.026
.032
.054
.073
.107
.123
.153
.180
.207
.244
.280
.303
.347
.389
.429
.505
.594
.675
.818
.9351.0261.087
.037
.062
.084
.124
.142
.176
.208
.238
.281
.322
.349
.399
.448
.494
.581
.681
.773
.9311.0561.1441.193
.042
.071
.096
.140
.161
.200
.236
.270
.319
.366
.396
.453
.507
.559
.657
.769
.8711.0431.1711.2521.280
.045
.075
.100
.148
.170
.212
.250
.286
.338
.383
.419
.480
.538
.592
.696
.813
.9201.0961.2231.2951.306
.047
.079
.107
.157
.180
.224
.264
.302
.358
.410
.443
.508
.568
.626
.735
.858
.9691.1501.2761.3391.333
.052
.088
.119
.175
.200
.248
.293
.336
.397
.455
.492
.563
.630
.694
.813
.9481.0681.2591.3821.4271.386
.057
.097
.131
.192
.220
.273
.323
.370
.437
.501
.541
.619
.692
.762
.8921.0381.1651.3601.4701.4821.390
.063
.106
.143
.210
.241
.299
.353
.404
.477
.547
.591
.675
.755
.831
.9721.1281.2621.4621.5591.5381.382
.068
.115
.155
.228
.262
.325
.383
.439
.518
.594
.641
.733
.819
.9011.0521.2161.3551.5521.6201.5541.330
.074
.124
.168
.247
.283
.351
.414
.474
.560
.641
.692
.791
.884
.9711.1321.3071.4521.6461.6931.5701.248
.085
.143
.194
.284
.325
.404
.477
.546
.644
.737
.796
.9091.0141.1131.2931.4841.6351.8061.7761.507
.096
.162
.220
.322
.369
.458
.541
.619
.713
.835
.9021.0281.1461.2561.4531.6571.8091.9391.800
.108
.182
.246
.361
.414
.513
.606
.694
.818
.9351.0091.1491.2791.4001.6131.8251.9712.0401.756
.120
.202
.273
.401
.459
.570
.673
.770
.9071.0361.1171.2711.4131.5431.7701.8862.1202.1051.637
.156
.264
.357
.524
.599
.742
.8771.0031.1801.3441.4471.6401.8141.9702.2222.4162.4602.040
.195
.328
.445
.652
.747
.9251.0901.2461.4631.6631.7872.0162.2162.3872.6382.7602.635
7
Power Rating Tables - Standard Metric Timing Belts
Belt Width mm 3M Belt 6 9 15
0.60 1.00 1.89Power Ratings (kW) for 9mm wide 3M Belt
Power Ratings (kW) for 9mm wide 5M Belt
Power Ratings (kW) for 20mm wide 8M Belt
Belt Width mm 14M Belt
Width Factor
55 8540 115 170
1.44 2.32 3.21 4.821.00Power Ratings (kW) for 40mm wide 14M Belt
Width Factor
Belt Width mm 5M Belt 9 15 25
1.00 1.93 3.48Width Factor
72
Number of Teeth on Small Pulley
22
RPM
of S
mal
l Pul
ley
24 26 28 30 32 34 36 38 40 44 48 56 64 72 80
.35
.59
.80
.991.171.351.671.972.262.673.053.303.774.214.424.93
.39
.66
.891.101.301.491.852.192.512.963.393.664.184.664.905.45
.47
.791.071.331.571.802.232.633.013.564.074.395.005.585.856.49
.51
.861.161.441.701.952.422.863.273.864.414.765.426.046.337.027.64
.55
.931.261.561.842.112.623.093.544.174.765.145.856.516.827.548.198.75
Width Factor
85
4.77
.43
.72
.981.211.431.642.042.412.763.263.724.024.595.125.375.97
.591.001.351.671.982.272.813.323.804.485.115.526.276.977.308.068.739.31
.631.071.451.792.122.433.013.554.074.795.475.906.707.447.798.589.289.86
.681.141.541.912.262.593.213.794.345.115.836.287.137.918.279.109.81
10.40
.721.211.642.032.402.763.424.034.615.436.196.677.568.388.769.61
10.3310.92
.811.361.842.282.703.093.834.525.166.076.927.458.439.319.72
1.06211.3511.91
.901.512.042.532.993.434.255.015.726.737.658.239.30
10.2410.6711.6012.3212.82
1.081.812.463.053.604.125.106.016.878.059.149.81
11.0312.0712.5213.4614.08
1.272.132.883.574.224.835.987.048.039.40
10.6411.3912.7313.8314.2915.14
1.462.453.324.124.865.566.888.099.22
10.7612.1412.9714.3915.5015.93
1.652.783.774.675.516.317.799.16
10.4212.1313.6414.5216.0017.06
Number of Teeth on Small Pulley
28
RPM
of S
mal
l Pul
ley
29 30 32 34 36 38 40 44 48 52 56 60 64 68 72 80
2.424.085.526.858.099.27
10.3911.4713.5115.4218.0720.4821.9525.19
2.424.085.526.858.099.27
10.3911.4713.5115.4218.0720.4821.9525.19
2.534.255.767.148.449.67
10.8411.9614.0616.0718.8221.3122.8326.15
2.634.436.007.448.79
10.0711.2812.4514.6616.7219.5722.1423.7127.0929.6931.43
2.854.796.488.049.49
10.8712.1913.4515.8218.0321.0823.8125.4528.9631.5433.10
3.065.156.978.64
10.2111.6913.1014.4516.9919.3622.5925.4727.1930.7933.3134.63
3.285.517.479.26
10.9312.5114.0215.4618.1820.6924.1127.1328.9232.5834.9835.99
3.505.887.979.87
11.6613.3414.9516.4819.3722.0225.6328.7830.6334.3236.5637.19
3.726.258.47
10.5012.3914.1915.8917.5120.5623.3727.1630.4232.3236.0038.0338.19
4.177.019.50
11.7713.8915.8917.7919.6022.9826.0730.1833.6735.6439.19
4.637.78
10.5413.0615.4017.6219.7121.7125.4228.7833.2036.8638.8442.11
5.108.57
11.6014.3716.9419.3721.6723.8427.8831.5036.2039.9641.9244.70
5.579.36
12.6715.6918.5021.1523.6426.0030.3534.2239.1542.9644.8346.94
6.0510.1713.7617.0420.0822.9425.6328.1732.8236.9342.0545.8447.57
6.5410.9914.8718.4021.6824.7527.6430.3635.3139.6344.9048.6050.12
7.0311.8115.9819.7823.3026.5829.6632.5537.7942.3047.6751.2152.45
7.5312.6517.1121.1724.9228.4231.7034.7640.2744.9650.37
8.5414.3519.4123.9928.2232.1535.8039.1945.2050.1655.48
RPM
of S
mal
l Pul
ley
10
100200300500600800
100012001450175020002400280032004000500060008000
100001200014000
Number of Teeth on Small Pulley
12 14 15 16 18 20 21 22 24 26 28 30 32 36 40 44 48 60
.007
.013
.018
.026
.029
.038
.044
.051
.059
.069
.076
.087
.099
.109
.131
.156
.179
.222
.263
.302
.338
.008
.016
.021
.031
.036
.046
.054
.063
.073
.084
.092
.107
.121
.134
.159
.189
.217
.270
.318
.365
.406
.009
.018
.026
.038
.044
.054
.064
.074
.086
.099
.111
.127
.142
.159
.187
.222
.255
.317
.375
.426
.474
.009
.019
.028
.041
.048
.059
.068
.079
.092
.107
.119
.136
.154
.170
.202
.239
.275
.341
.401
.458
.507
.011
.021
.029
.044
.051
.064
.076
.086
.101
.116
.127
.147
.166
.184
.217
.257
.295
.366
.429
.489
.542
.013
.024
.034
.051
.058
.073
.086
.099
.114
.132
.147
.169
.189
.209
.249
.293
.335
.415
.486
.551
.607
.014
.028
.039
.058
.066
.083
.097
.112
.129
.149
.166
.190
.214
.235
.278
.328
.376
.463
.541
.610
.670
.014
.029
.041
.061
.069
.087
.102
.119
.136
.157
.174
.200
.225
.249
.293
.346
.396
.488
.567
.639
.700
.016
.031
.044
.064
.074
.092
.109
.126
.144
.167
.184
.212
.237
.262
.310
.365
.418
.512
.595
.668
.730
.018
.036
.049
.073
.083
.102
.121
.139
.161
.185
.204
.234
.262
.290
.341
.403
.459
.562
.652
.727
.790
.019
.039
.054
.079
.091
.109
.132
.152
.175
.204
.224
.257
.287
.318
.373
.439
.501
.610
.705
.781
.843
.021
.044
.059
.087
.099
.124
.146
.167
.192
.222
.245
.280
.313
.346
.406
.478
.542
.660
.758
.838
.898
.023
.048
.064
.094
.107
.134
.159
.182
.209
.240
.265
.303
.340
.375
.439
.516
.584
.708
.810
.888
.942
.026
.053
.071
.109
.117
.146
.172
.197
.227
.260
.287
.327
.366
.403
.473
.554
.627
.756
.861
.939
.989
.029
.061
.083
.119
.137
.169
.199
.227
.262
.300
.330
.376
.421
.463
.541
.630
.712
.849
.9541.0221.050
.034
.071
.096
.137
.157
.194
.227
.258
.297
.340
.375
.426
.476
.522
.610
.708
.798
.9441.0471.1051.112
.039
.081
.109
.156
.177
.219
.257
.292
.335
.381
.419
.478
.532
.584
.678
.786
.8811.0301.1231.1571.122
.046
.091
.122
.175
.199
.245
.287
.327
.373
.424
.466
.529
.589
.645
.748
.864
.9641.1171.2011.2101.133
.058
.116
.154
.222
.252
.308
.361
.411
.469
.534
.587
.665
.738
.806
.9311.0621.1701.3031.3141.186
100200300400500600700800
10001200150018002000250030003500
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:49 Page 7
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1
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3
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8
Power Rating Tables - Silver &Gold Timing Belts
Belt Width mm 8S Belt
Number of Teeth on Small Pulley
22
RPM
of S
mal
l Pul
ley
24 26 28 30 32 34 36 38 40 44 48 56 64 72 80
Width Factor
20 30 50 85
1.00 1.58 2.74 4.77Power Ratings (kW) for 20mm wide Silver 8S Belt
2050
100200300500700
10001200150018002000250030003500400045005000
0.140.350.681.141.552.272.923.824.385.175.936.417.568.659.67
10.6511.5812.47
0.150.380.751.261.712.513.224.214.835.706.537.068.339.52
10.6411.7112.7213.68
0.160.410.821.381.872.743.534.615.286.237.147.729.10
10.4011.6212.7713.8614.89
0.180.440.881.502.032.983.835.005.736.777.758.389.88
11.2812.5913.8315.0016.10
0.190.470.941.622.193.224.145.406.197.318.379.05
10.6612.1613.5714.9016.1417.29
0.200.501.011.742.363.464.455.816.667.868.999.72
11.4413.0514.5515.9517.2618.48
0.210.531.071.862.523.704.766.227.128.419.62
10.4012.2313.9415.5317.0118.3919.65
0.230.571.131.982.693.945.086.637.598.96
10.2511.0713.0214.8316.5118.0619.5020.81
0.240.601.202.112.864.195.397.048.069.51
10.8811.7513.8215.7217.4919.1120.6021.95
0.250.631.262.233.034.445.717.458.54
10.0711.5212.4414.6116.6118.4620.1521.6923.07
0.280.691.382.483.374.946.358.299.49
11.1912.8013.8116.2118.4020.4022.2123.8325.28
0.300.761.512.743.715.447.009.13
10.4612.3314.0815.2017.8020.1722.3224.2325.91
0.350.881.763.264.416.478.32
10.8412.4114.6116.6717.9820.9923.6926.0728.13
0.401.012.013.785.127.519.65
12.5814.3916.9319.2820.7624.1627.1429.69
0.451.132.274.315.848.57
11.0114.3416.3919.2521.9023.5527.3030.49
0.501.262.524.856.589.64
12.3816.1118.4021.5924.5226.3330.38
Belt Width mm 14S Belt
Number of Teeth on Small Pulley
28
RPM
of S
mal
l Pul
ley
29 30 32 34 36 38 40 44 48 52 56 60 64 68 72 80
Width Factor
55 8540 115 170
1.44 2.32 3.21 4.821.00Power Ratings (kW) for 40mm wide Silver 14S Belt
10205070
100200300500700
100012001500180020002500300035004000
0.400.812.022.824.037.50
10.1614.9019.1524.9628.5633.6138.3241.2848.1154.1559.3863.79
0.420.842.092.924.187.82
10.5915.5319.9626.0129.7535.0139.8942.9650.0356.2361.5765.99
0.430.862.163.034.328.13
11.0216.1620.7727.0730.9536.4141.4744.6551.9458.3163.7368.16
0.460.922.313.234.618.78
11.9017.4322.4129.1933.3739.2344.6548.0455.7662.4267.9872.37
0.490.982.453.434.909.43
12.7818.7224.0631.3335.8142.0747.8451.4359.5766.4972.12
0.521.042.593.635.19
10.0913.6720.0325.7333.5038.2744.9251.0454.8463.3670.4976.15
0.551.102.743.835.47
10.7514.5721.3427.4235.6840.7447.7954.2558.2467.1374.43
0.581.152.884.035.76
11.4215.4822.6729.1237.8743.2350.6857.4661.6470.8678.29
0.631.273.174.446.34
12.6817.3225.3632.5642.3148.2656.4863.9068.4378.22
0.691.383.464.846.92
13.8319.1928.0936.0646.8153.3462.3170.3375.1785.39
0.751.503.755.247.49
14.9821.0830.8739.6051.3558.4568.1576.7381.84
0.811.614.035.658.07
16.1323.0133.6743.1855.9263.6074.0083.0988.41
0.861.734.326.058.64
17.2824.9636.5146.7960.5468.7779.8489.3894.88
0.921.844.616.459.22
18.4326.9339.3850.4565.1873.9685.6695.59
101.20
0.981.964.906.869.80
19.5828.9242.2854.1369.8579.1591.45
101.71
1.042.075.197.26
10.3720.7330.9345.2157.8474.5384.3597.19
1.152.315.768.07
11.5223.0334.5151.1465.3483.9594.74
108.53
Belt Width mm 8G Belt
Number of Teeth on Small Pulley
22
RPM
of S
mal
l Pul
ley
24 26 28 30 32 34 36 38 40 44 48 56 64 72 80
Width Factor
20 30 50 85
1.00 1.50 2.50 4.25Power Ratings (kW) for 20mm wide Gold 8G Belt
2050
100200300500700
10001200150018002000250030003500400045005000
0.180.400.751.381.973.104.175.726.728.199.62
10.5512.8415.0617.2319.3521.4223.44
0.200.450.821.522.183.424.606.317.419.03
10.6011.6314.1516.6018.9821.3023.5725.78
0.220.490.901.662.383.745.046.908.119.88
11.6012.7215.4718.1420.7423.2725.7328.13
0.240.530.981.812.594.075.477.508.81
10.7312.6013.8216.8119.7022.5125.2527.9030.49
0.250.571.061.952.804.395.928.119.52
11.6013.6114.9318.1521.7724.2927.2330.0832.84
0.270.621.142.103.014.726.368.72
10.2412.4714.6316.0519.5022.8426.0829.2232.2535.19
0.290.661.222.253.225.066.819.33
10.9613.3415.6617.1720.8624.4327.8731.2134.4337.54
0.310.701.302.403.435.397.269.95
11.6914.2216.6918.3022.2326.0129.6733.2036.6039.88
0.330.751.382.553.655.737.72
10.5712.4215.1117.7319.4423.6027.6131.4735.2038.7742.21
0.350.791.462.703.866.078.18
11.2013.1516.0018.7720.5824.9829.2133.2837.1940.9444.52
0.390.881.633.004.306.769.10
12.4614.6317.8020.8822.8827.7532.4136.8941.1645.2449.11
0.430.971.793.314.747.45
10.0313.7416.1319.6223.0025.2030.5335.6340.4945.1249.50
0.511.162.133.945.648.86
11.9316.3319.1723.2927.2929.8836.1442.0747.6752.83
0.601.342.484.586.56
10.3013.8618.9722.2527.0231.6234.6041.7648.4854.75
0.671.532.835.237.48
11.7515.8121.6325.3730.7835.9939.3547.3754.83
0.371.733.195.898.43
13.2317.8024.3328.5234.5740.3844.1152.96
Belt Width mm 14G Belt
Number of Teeth on Small Pulley
28
RPM
of S
mal
l Pul
ley
29 30 32 34 36 38 40 44 48 52 56 60 64 68 72 80
Width Factor
55 8540 115 170
1.37 2.12 2.87 4.251.00Power Ratings (kW) for 40mm wide Gold 14G Belt
10205070
100200300500700
100012001500180020002500300035004000
0.751.443.284.446.13
11.4316.4726.0735.2748.5657.1669.7381.9589.92
109.27127.78145.46162.27
0.781.503.424.626.37
11.8917.1327.1236.6950.5159.4472.5185.2093.48
113.54132.71150.98168.30
0.811.563.554.806.62
12.3617.8028.1738.1152.4661.7475.3088.4797.05
117.82137.64156.48174.30
0.861.673.825.177.12
13.2919.1330.2940.9756.3966.3680.9095.02
104.20126.39147.49167.44186.19
0.911.794.095.537.62
14.2220.4832.4243.8660.3571.0086.54
101.60111.38134.98157.31178.33
0.971.914.365.908.13
15.1721.8434.5846.7664.3475.6892.21
108.20118.59143.56167.10189.13
1.022.034.636.278.64
16.1223.2136.7449.6968.3480.3897.90
114.83125.81152.14176.85
1.072.154.906.649.15
17.0824.5938.9252.6372.3785.10
103.61121.48133.04160.71186.54
1.182.365.467.39
10.1919.0127.3743.3158.5680.4994.61
115.10134.81147.52177.78
1.292.586.028.15
11.2420.9630.1947.7664.5588.69
104.19126.64148.17162.01194.73
1.402.796.598.92
12.2922.9433.0352.2570.6096.94
113.83138.24161.55176.47
1.503.017.169.69
13.3624.9335.9056.7776.70
105.25123.53149.86174.91190.88
1.613.227.74
10.4814.4426.9438.7961.3482.84
113.61133.26161.50188.25205.21
1.723.438.32
11.2715.5328.9741.7165.9489.03
122.02143.03173.15201.53219.44
1.823.658.91
12.0616.6231.0144.6570.5795.25
130.45152.83184.78214.74
1.933.869.50
12.8617.7333.0747.6175.23
101.51138.92162.64196.40
2.154.29
10.7014.4819.9637.2353.5884.64
114.12155.94182.30219.52
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:49 Page 8
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
RPM
of S
mal
l Pul
ley
9
Belt Width Reference
Belt Width Factor
050 075 100
0.42 0.71 1.00
Power Rating Tables -Classical Timing BeltsPower Ratings (kW) for 3/8” wide XL Series Belts (Size XL037)
Number of Teeth Small Pulley
10 11 12 14 15 16 18 20 21 22 24 26 28 30 32 36 40100200300400500600800
1000120014001500160017502000240028003000320035004000450050006000700080009000
10000
.004
.008
.012
.016
.020
.025
.034
.042
.050
.059
.062
.070
.076
.087
.004
.009
.014
.018
.023
.027
.036
.046
.055
.064
.070
.076
.081
.095
.112
.132
.140
.151
.165
.005
.010
.015
.020
.025
.030
.040
.050
.060
.071
.075
.084
.090
.102
.123
.144
.155
.165
.180
.205
.231
.257
.006
.011
.017
.023
.029
.035
.048
.060
.071
.084
.090
.096
.104
.119
.142
.167
.180
.190
.210
.240
.269
.297
.006
.012
.019
.025
.031
.037
.050
.065
.077
.090
.096
.102
.112
.130
.155
.180
.192
.200
.225
.288
.310
.380
.441
.007
.013
.020
.027
.033
.040
.054
.069
.081
.096
.102
.111
.120
.136
.165
.192
.205
.220
.239
.272
.306
.340
.405
.468
.007
.015
.022
.029
.037
.046
.063
.077
.091
.109
.115
.123
.134
.155
.184
.215
.230
.247
.268
.305
.343
.380
.451
.522
.589
.654
.713
.008
.016
.025
.033
.042
.050
.069
.086
.102
.119
.127
.136
.151
.171
.205
.240
.257
.272
.299
.340
.380
.420
.500
.575
.648
.713
.775
.009
.018
.026
.035
.044
.054
.071
.090
.108
.125
.134
.144
.157
.180
.215
.251
.267
.286
.312
.357
.400
.441
.522
.600
.675
.742
.802
.009
.019
.028
.037
.046
.056
.075
.094
.113
.132
.140
.150
.165
.188
.224
.263
.280
.299
.326
.372
.416
.460
.545
.625
.698
.769
.827
.010
.020
.030
.040
.050
.060
.084
.102
.123
.144
.155
.165
.179
.205
.247
.286
.305
.326
.355
.405
.453
.500
.589
.675
.750
.819
.880
.011
.022
.033
.044
.055
.066
.088
.110
.132
.155
.167
.177
.194
.222
.266
.309
.331
.352
.384
.436
.487
.537
.632
.719
.795
.863
.919
.012
.024
.036
.048
.060
.071
.096
.119
.142
.167
.180
.190
.210
.240
.286
.332
.357
.378
.413
.468
.522
.575
.675
.763
.840
.907
.959
.012
.025
.038
.050
.063
.077
.102
.130
.155
.180
.192
.205
.224
.257
.305
.357
.380
.405
.441
.500
.555
.610
.713
.802
.880
.942
.986
.013
.027
.040
.054
.069
.081
.111
.136
.165
.192
.205
.220
.239
.272
.326
.378
.405
.430
.468
.529
.589
.648
.750
.825
.915
.9781.030
.015
.029
.046
.063
.077
.091
.123
.155
.184
.215
.230
.247
.268
.305
.365
.423
.451
.479
.522
.589
.654
.713
.819
.898
.9781.035
.016
.033
.050
.069
.086
.102
.136
.171
.205
.240
.257
.272
.299
.340
.405
.468
.500
.529
.575
.648
.713
.775
.880
.9591.030
Belt Width Reference
Belt Width Factor
075 100 150 200 300
0.71 1.00 1.56 2.14 3.36
RPM
of S
mal
l Pul
ley
Power Ratings (kW) for 1” wide L Series Belts (3/8” Pitch)Number of Teeth Small Pulley
12 13 14 15 16 17 18 19 20 21 22 24 26 28 30 32 36 40100200300400500600700800
10001200140015001750200022002500280030003200350040004500500055006000
0.040.100.140.190.230.280.330.370.460.560.650.700.810.931.011.161.291.38
0.050.100.150.200.250.310.350.400.510.600.710.760.871.011.101.251.401.491.591.73
0.050.110.160.220.280.330.380.430.540.660.760.810.951.081.191.341.501.601.701.862.11
0.060.120.170.230.290.350.410.460.580.700.810.871.011.161.271.431.601.711.821.982.242.502.742.973.20
0.060.130.190.250.310.370.430.500.620.750.870.931.081.231.351.531.711.821.942.112.392.652.923.153.39
0.070.130.200.260.330.400.460.530.660.790.920.981.151.311.431.621.811.932.042.232.512.803.063.313.54
0.070.140.210.280.350.420.490.560.700.840.971.041.211.381.511.721.912.042.162.352.662.943.223.473.71
0.070.150.220.300.370.440.510.590.740.881.031.101.281.451.601.812.012.142.272.472.783.073.363.613.84
0.070.160.230.310.390.470.540.620.780.931.081.161.341.531.681.892.102.252.382.582.903.213.493.753.98
0.080.160.250.330.410.490.570.620.810.971.131.211.411.601.751.982.212.352.492.703.033.343.633.884.12
0.090.170.250.340.430.510.600.690.851.011.191.271.481.681.842.072.312.452.602.813.163.473.764.014.24
0.100.190.280.370.470.560.650.750.931.111.291.381.601.821.992.252.492.652.803.033.393.713.994.234.42
0.100.200.310.400.510.600.710.811.001.201.401.491.731.962.152.422.682.843.013.253.603.924.204.434.59
0.110.220.330.430.540.650.760.871.081.291.501.601.862.102.302.592.863.033.203.443.804.124.374.574.68
0.120.230.350.460.580.700.810.931.161.381.601.721.982.252.452.753.033.213.393.633.984.294.524.674.74
0.130.250.370.500.620.750.870.981.231.471.711.822.112.372.602.913.203.393.563.804.164.444.634.724.72
0.140.280.420.560.700.840.971.111.381.651.912.042.352.662.883.213.513.713.884.124.434.664.73
0.160.310.470.620.780.931.081.231.531.822.102.252.592.903.163.503.803.994.164.384.634.75
RPM
of S
mal
l Pul
ley
Power Ratings (kW) for 1” wide H Series Belts (1/2” Pitch)Number of Teeth Small Pulley
14 16 18 19 20 21 22 24 26 28 30 32 36 40 44 48100200300400500600700800900
10001100120014001500160017502000220025002800300032003600400044004800500054006000
0.190.370.550.740.931.111.291.481.661.842.03
0.210.430.630.841.051.271.481.691.892.102.312.522.943.153.363.664.18
0.240.480.720.951.191.421.661.892.132.362.602.833.303.543.774.124.685.145.826.486.927.35
0.250.500.751.001.251.511.752.002.252.502.752.993.483.733.984.334.945.426.126.827.277.738.459.35
0.260.530.791.051.321.581.842.102.362.632.893.153.663.924.184.565.195.696.437.157.638.099.009.8810.7111.5011.8812.6013.57
0.280.550.831.111.391.661.932.212.482.763.033.303.844.114.384.785.455.976.747.497.988.479.41
10.3111.1711.9712.3513.0814.04
0.290.580.871.161.451.742.032.312.602.893.183.464.024.304.595.015.696.247.047.838.348.849.82
10.7411.6212.4412.8213.5514.50
0.310.630.951.271.581.892.212.522.833.153.463.774.384.684.995.456.186.777.638.479.019.54
10.5611.5212.4113.2113.5914.2715.12
0.340.691.031.371.722.052.392.733.073.413.744.074.745.075.395.886.687.308.229.119.68
10.2411.3012.2813.1813.9814.3514.99
0.370.741.111.481.842.212.572.943.303.664.034.395.105.455.806.317.167.838.809.74
10.3310.9112.0013.0013.8914.6715.01
0.400.791.191.581.982.362.763.153.543.924.304.695.455.826.196.747.648.349.35
10.3210.9411.5312.6413.6314.49
0.430.841.271.692.102.522.943.363.774.184.594.995.806.196.587.168.118.849.90
10.9011.5312.1413.2414.20
0.480.951.421.892.362.833.303.774.234.695.155.596.486.927.367.999.039.82
10.9512.0012.6513.2614.34
0.531.051.582.102.633.153.664.184.695.195.696.197.167.648.118.809.90
10.7411.9212.9913.6314.2215.20
0.581.161.742.312.893.464.034.595.145.696.246.777.838.348.849.58
10.7411.6212.8213.8814.4915.02
0.631.271.892.523.153.774.394.995.596.196.777.368.479.029.55
10.3211.5312.4313.6314.6415.20
Note: Shaded area indicates pulley speeds which can be used with a reduction in belt service life.
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Timing Belt Drives - Installation
10
Cross & Morse Timing Belt Drives will give excellent performance andlong life provided they are correctly installed. Pulleys must be rigidlymounted and correctly aligned, and belts installed with a snug fit nothighly tensioned. One pulley should be flanged in all drives, and bothpulleys flanged on drives with vertical shafts.
Pulley Manufacture and ReboreStandard Pulleys are manufactured to high levels of concentricity.When plain bore pulleys are re-machined it is essential thatconcentricity between bore and pulley O.D. is kept within thefollowing:-
Pulleys up to 200mm diameter - 0.10mm total run-out.
Pulleys over 200mm diameter - 0.05/100mm dia. total run-outto maximum 0.20mm.
Also the bore of the pulley must be perpendicular to side faces within0.5mm/100mm dia. total run-out to a max. of 0.5mm.In manufacture pulleys of 200mm and above diameter are staticallybalanced to levels indicated below.
This level of balancing is adequate for the majority of applications, butwhere belt speeds exceed 30 m/s pulleys will need to be furtherdynamically balanced to 1.8 x 10-3 Nm. Cast Iron pulleys must neverbe run over 30 m/s belt speed.
Installation and Alignment of PulleysClean all oil, grease and dirt from pulleys, ensuring grooves and boreare clean and free from burrs. Pulleys should be assembled onto shaftsand rigidly locked in place by taper bush or close fit bore and key onparallel bore pulleys. Alignment of shafts and pulleys is essential asmisalignment will result in unequal belt tension and edge wear. Tocheck alignment place a straight edge against the outside edges of thepulleys and position pulleys so that the straight edge touches the twooutside and two inside edges of the pulleys. Alignment of pulleysshould be confirmed after installation of belt.Check the rigidity of the supporting framework. Shafts must be wellsupported to prevent distortion with resultant changes in centredistance which will result in belt slackness causing jumping of teethunder high starting or shock load conditions.
Timing Belt InstallationTiming belts are susceptible to kinking, and should never be forced orprised on to pulleys. Reduction of centre distance or removal oftensioning idler are normal methods to enable belt fitting. For fixedcentre drives without idler the belt must be fitted to pulley prior tomounting on shafts or support bearings. To enable correct fitting wherecentres can be adjusted, the centres must be able to be reduced by thevalue in the table below under “allowance for installation” andincreased by the tensioning allowance, from the nominal centre distance.
Belt TensionTiming Belt Drives do not require as much tension as other beltdrives that depend on friction to transmit the load. The belt shouldbe installed with a snug fit, neither taut or loose. The correct level oftension can be determined by measuring the force necessary todeflect the belt an amount equal to 1/64th of its span centres ‘S’.Values for measuring forces recorded on a spring balance appliedmid-span of the belt should be as shown in the table below. Thevalue recorded for a drive should be within 10% of these values.These measurements give correct tension for most drives, but forhigh shock load applications consult Cross & Morse Engineering.
High Power Metric and Open Ended BeltsThe correct tensioning of RPP Silver and RPP Gold High Power beltsincludes consideration of transmitted power, operating speeds, andnumber of teeth in pulleys.Open ended belts are normally tensioned according to max. linearload to be transmitted, to minimise any backlash on reversing drives.Advice on correct tensioning of those belts can be supplied by Crossand Morse technical dept, as well as assistance in belt selection.
Belt StorageTo ensure correct functioning of the belts and prevent prematurefailure, belts must be protected against sharp bending or creasing.They should be stored in a cool, dry, well ventilated room withintemperature range 15-20˚C. It is preferable to keep polyurethanebelts in a darkened environment.
Use of IdlersInside or outside idlers used for tensioning or power take off shouldbe on the slack side of the belt. Inside idlers must be grooved unlessthe number of grooves is more than 40, when flat idlers can be used.Flat faced idlers must not be crowned, and all idlers should be equalto, or greater than the smallest drive pulley. Idlers must be of fixedtype, and positioned so that the arc of contact is kept to a minimum.
Pulley Face Widthmm
Up to 60 200-300301-600
610
3M063M093M155M095M155M258M208M308M508M85
14M4014M5514M8514M11514M170
.17
.29
.54
.42
.811.461.933.055.309.205.608.00
13.0018.0027.00
6T2.56T5
10T516T525T5
16T1025T1032T1050T10XL037XL050L050L075L100H100H150H200H300
0.070.180.300.480.750.901.401.802.800.300.400.61.01.43.14.86.610.4
61-99
200-300301-600601-1000over 1000
10152030
100 and over
200-300301-600601-1000over 1000
20304060
Pulley Diametermm
Max. Unbalancegm
Belt Size F kg Belt Size F kg
Belt SizeOne Pulley Flanged Both Pulleys Flanged
TensioningAllowance
Allowance for Installation
3M5M8M14MXLLHXH
T2.5AT5 &T5
AT10 & T10
12.419.626.543.315.919.122.045.015.317.021.5
20.832.242.366.927.431.736.269.027.930.035.0
2.02.53.04.00.61.01.52.00.50.81.0
d = s/64mm
Values for Measuring Force
Std. Metric BeltsClassical and
Polyurethane Belts
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11
Metric Series Timing Belts
High Power Metric Belts (page 13)RPP Silver Belts provide increased torque and power capacity.Available 8mm (8S) and 14mm (14S) pitches, they operate onstandard metric pulleys to transmit up to 470kW. Body of thebelt is manufactured from reinforced polychloropreniccompound with exceptional resistance to flex fatigue, ozone,heat, and mineral oils. The teeth are faced with graphiteimpregnated nylon for high strength and low friction. A highmodule resistant fibre cord gives high breaking strength withreduced elasticity.
As with classical series belts, power is transmitted by a glassfibre tension member spirally wound across the width of thebelt. The glass fibre cord ensures length stability combinedwith high strength and resistance to failure under repeatedflexing. The tension member is bonded into a syntheticrubber body moulded integral with the drive teeth. Therubber compound selected has complete absence of agedeformation and high resistance to mineral lubricating oils,heat, ozone and flex fatigue. A tough nylon fabric is bondedto the drive face of the belt, which by a patented treatment isself lubricating, for low coefficient of friction with exceptionalresistance to abrasion and shear, for high drive efficiency withlong belt and pulley life.
Standard Metric Belts (pages 12)The RPP series of belts provide the ideal solution for mostdrives. Totally interchangeable with other deep profile belts,they are available in 4 pitch sizes; 3mm (3M), 5mm (5M); 8mm(8M), and 14mm (14M). Standard drives are suitable forapplications from fractional kW up to 250kW power rating.In order to transmit higher powers tooth contact between beltand pulley has to be increased. To achieve this a parabolictooth form with contact angle increasing from tooth base totip was adopted, enabling a deeper tooth form than classicalbelts. The improved level of meshing, combined withsmoother engagement of drive, increased resistance to toothshear and tooth jumping enabled higher torque transmissionwith reduced installation tension. Belts have an indentation atthe top of the tooth to further improve meshing between beltand pulley by deformation of the tooth tip allowing precisemoulding of tooth to pulley contours, reducing frictional wear.The indentation also allows air to escape, further reducingnoise levels.
Standard High Torque Metric Timing Belt DrivesTo provide optimum performance with a standard range ofMetric High Torque Drive Pulleys, Cross & Morse selected.RPP series belts.The RPP belts are, combined with a standard range of pulleyto provide “off the shelf” drives in 4 pitches; 3mm (3M) 5mm(5M), 8mm (8M), and 14mm (14M), able to transmit up to700kW, or drive shafts to 15,000 r.p.m.
The pulleys are available with 2 methods of shaft connection;Pilot bored, pages 17-20, for finishing with sized bore, keywayand setscrews can, optionally be supplied finished; taperbored for fitting standard taper bushes page 25.
For even higher powered drives, up to 700kW, the Pantherseries belts, were developed in 8mm (8G) and 14mm (14G)pitches. These use Aramid reinforced polychloroprene for thebody of the belt with double layer graphite impregnatednylon facing for the teeth. The tension cables are in Kevlar formaximum strength with flexibility. The belts provide all theadvantages of RPP Silver with additional load capacity,excellent anti-static properties, and ability to use idlers on theback of the belt.
Anti Static BeltsBelts conforming to BS2050 standards can be supplied for the8M and 14M belt sizes. These belts are for appliction within chemical plants, oil refineries, and in mines.
The RPP Silver & RPP Gold high power belts have anti-staticproperties as standard.
Double sided Belts (page 15)To enable power to be taken from both sides of the belt totransfer direction of drive. Available in 5M and 14M toothform to operate on standard Metric pulleys.
These belts have moulded teeth on both sides with nylonjacket, to enable full torque transmission. Ideal for Serpentinedrives, and multi shaft arrangements.
‘TIL’ Long length BeltsSpecial manufacturing method enables extra long lengthendless belts to be manufactured.
Ideal for long centre distance drives where full torquetransmission is required.
Open Ended Metric Belts (pages 26-28)Long length (up to 150 Metres) open ended belts are availablein both standard neoprene rubber costruction, and inPolyurethane with RPP tooth form.For increased Power capacity the “Green Belt” is available asan alternate/replacement, these being Polyurethane beltsmanufactured to tight tolerance with standard RPP toothprofile for maximum power transmission.
The teeth are faced with green nylon fabric giving reducednoise and friction. High strength steel tension member giveshigh breaking strengths with extremely low elongation. Thebelts are available in 5mm, 8mm, and 14mm pitch for lineardrive applications, and are particularly suitable in drives withfrequent speed change.
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535565575580600610615635640670675700705710725740750755800835850890900935940
BeltLength
mmNo.
Teeth
9mm Wide Belt 15mm Wide Belt 25mm Wide Belt
Cat. No. Cat. No. Cat. No.
535-5M9565-5M9575-5M9580-5M9600-5M9610-5M9615-5M9635-5M9640-5M9670-5M9675-5M9700-5M9705-5M9710-5M9725-5M9740-5M9750-5M9755-5M9800-5M9835-5M9850-5M9890-5M9900-5M9935-5M9940-5M9
107113115116120122123127128134135140141142145148150151160167170178180187188
22242424252626272728282930303031313234353637383939
535-5M15565-5M15575-5M15580-5M15600-5M15610-5M15615-5M15635-5M15640-5M15670-5M15675-5M15700-5M15705-5M15710-5M15725-5M15740-5M15750-5M15755-5M15800-5M15835-5M15850-5M15890-5M15900-5M15935-5M15940-5M15
37404041424343444547474949505152525356586062636566
535-5M25565-5M25575-5M25580-5M25600-5M25610-5M25615-5M25635-5M25640-5M25670-5M25675-5M25700-5M25705-5M25710-5M25725-5M25740-5M25750-5M25755-5M25800-5M25835-5M25850-5M25890-5M25900-5M25935-5M25940-5M25
636667687071727475787982828385878788949899104106109110
Wtgms
Wtgms
Wtgms
90-3M15105-3M15129-3M15141-3M15144-3M15147-3M15150-3M15159-3M15168-3M15174-3M15177-3M15180-3M15186-3M15195-3M15201-3M15204-3M15210-3M15213-3M15225-3M15231-3M15240-3M15243-3M15246-3M15252-3M15255-3M15261-3M15264-3M15267-3M15270-3M15
89
1010111111121213131414151617181819191920202122
Metric Series Timing Belts
5mm Pitch Standard Metric Belts Type 5MBelt
Lengthmm
No.Teeth
9mm Wide Belt 15mm Wide Belt 25mm Wide Belt
Cat. No. Cat. No. Cat. No.
180225235245255265270285295300305325345350375400420425450455460465475500525
3645474951535457596061656970758084859091929395100105
180-5M9225-5M9235-5M9245-5M9255-5M9265-5M9270-5M9285-5M9295-5M9300-5M9305-5M9325-5M9345-5M9350-5M9375-5M9400-5M9420-5M9425-5M9450-5M9455-5M9460-5M9465-5M9475-5M9500-5M9525-5M9
13161617181919202121212324252628293032323233333537
180-5M15225-5M15235-5M15245-5M15255-5M15265-5M15270-5M15285-5M15295-5M15300-5M15305-5M15325-5M15345-5M15350-5M15375-5M15400-5M15420-5M15425-5M15450-5M15455-5M15460-5M15465-5M15475-5M15500-5M15525-5M15
180-5M25225-5M25235-5M25245-5M25255-5M25265-5M25270-5M25285-5M25295-5M25300-5M25305-5M25325-5M25345-5M25350-5M25375-5M25400-5M25420-5M25425-5M25450-5M25455-5M25460-5M25465-5M25475-5M25500-5M25525-5M25
3mm Pitch Standard Metric Belts Type 3MBelt
Lengthmm
No.Teeth
6mm Wide Belt 9mm Wide Belt 15mm Wide Belt
Cat. No. Wt gms Cat. No. Cat. No.
90105129141144147150159168174177180186195201204210213225231240243246252255261264267270
3035434748495053565859606265676870717577808182848587888990
22333333344444444455555555566
90-3M6105-3M6129-3M6141-3M6144-3M6147-3M6150-3M6159-3M6168-3M6174-3M6177-3M6180-3M6186-3M6195-3M6201-3M6204-3M6210-3M6213-3M6225-3M6231-3M6240-3M6243-3M6246-3M6252-3M6255-3M6261-3M6264-3M6267-3M6270-3M6
33444555555666666777788888888
557778889999
1010101111111212121313131313141414
90-3M9105-3M9129-3M9141-3M9144-3M9147-3M9150-3M9159-3M9168-3M9174-3M9177-3M9180-3M9186-3M9195-3M9201-3M9204-3M9210-3M9213-3M9225-3M9231-3M9240-3M9243-3M9246-3M9252-3M9255-3M9261-3M9264-3M9267-3M9270-3M9
Wt gms
Wt gms
Wtgms
Wtgms
510-3M15513-3M15522-3M15531-3M15537-3M15564-3M15570-3M15576-3M15579-3M15597-3M15600-3M15633-3M15648-3M15669-3M15711-3M15735-3M15738-3M15756-3M15804-3M15882-3M15945-3M15
1062-3M151125-3M151245-3M151263-3M151500-3M151530-3M151863-3M15
No.Teeth
6mm Wide Belt 9mm Wide Belt 15mm Wide Belt
Cat. No. Wt gms Cat. No. Cat. No.
510513522531537564570576579597600633648669711735738756804882945
1062112512451263150015301863
170171174177179188190192193199200211216223237245246252268294315354375415421500510621
11111111111212121212121313141515151617181922232626313238
510-3M6513-3M6522-3M6531-3M6537-3M6564-3M6570-3M6576-3M6579-3M6597-3M6600-3M6633-3M6648-3M6669-3M6711-3M6735-3M6738-3M6756-3M6804-3M6882-3M6945-3M6
1062-3M61125-3M61245-3M61263-3M61500-3M61530-3M61863-3M6
16161616171718181818192020212223232325272933353839464758
26262727282929303031313333343738383941454955586465777996
Wt gms
Wt gms
510-3M9513-3M9522-3M9531-3M9537-3M9564-3M9570-3M9576-3M9579-3M9597-3M9600-3M9633-3M9648-3M9669-3M9711-3M9735-3M9738-3M9756-3M9804-3M9882-3M9945-3M9
1062-3M91125-3M91245-3M91263-3M91500-3M91530-3M91863-3M9
BeltLength
mm
BeltLength
mmNo.
Teeth
6mm Wide Belt 9mm Wide Belt 15mm Wide Belt
Cat. No. Wt gms Cat. No. Cat. No.
276285288291297300312318327330336339345357363375384390393405420432447474480486489501
9295969799
100104106109110112113115119121125128130131135140144149158160162163167
666666677777777888889991010101010
276-3M6285-3M6288-3M6291-3M6297-3M6300-3M6312-3M6318-3M6327-3M6330-3M6336-3M6339-3M6345-3M6357-3M6363-3M6375-3M6384-3M6390-3M6393-3M6405-3M6420-3M6432-3M6447-3M6474-3M6480-3M6486-3M6489-3M6501-3M6
99999910101010101011111112121212131313141515151515
14151515151516161717171718181919202020212222232425252526
Wt gms
Wt gms
276-3M9285-3M9288-3M9291-3M9297-3M9300-3M9312-3M9318-3M9327-3M9330-3M9336-3M9339-3M9345-3M9357-3M9363-3M9375-3M9384-3M9390-3M9393-3M9405-3M9420-3M9432-3M9447-3M9474-3M9480-3M9486-3M9489-3M9501-3M9
276-3M15285-3M15288-3M15291-3M15297-3M15300-3M15312-3M15318-3M15327-3M15330-3M15336-3M15339-3M15345-3M15357-3M15363-3M15375-3M15384-3M15390-3M15393-3M15405-3M15420-3M15432-3M15447-3M15474-3M15480-3M15486-3M15489-3M15501-3M15
25mm Wide BeltNo.Teeth
9mm Wide Belt 15mm Wide Belt
Cat. No. Cat. No. Cat. No.
950-5M9980-5M9
1000-5M91025-5M91050-5M91100-5M91125-5M91135-5M91195-5M91200-5M91240-5M91270-5M91420-5M91595-5M91690-5M91790-5M91800-5M91870-5M91895-5M91945-5M92000-5M92250-5M92525-5M9
190196200205210220225227239240248254284319338358360374379389400450505
40414243444647485050525360674175767980828495
106
950-5M15980-5M15
1000-5M151025-5M151050-5M151100-5M151125-5M151135-5M151195-5M151200-5M151240-5M151270-5M151420-5M151595-5M151690-5M151790-5M151800-5M151870-5M151895-5M151945-5M152000-5M152250-5M152525-5M15
67697072747779798484878999
112118125126131133136140158177
950-5M25980-5M25
1000-5M251025-5M251050-5M251100-5M251125-5M251135-5M251195-5M251200-5M251240-5M251270-5M251420-5M251595-5M251690-5M251790-5M251800-5M251870-5M251895-5M251945-5M252000-5M252250-5M252525-5M25
111115117120123129132133140140145149166187198209211219222228234263295
Wtgms
Wtgms
Wtgms
950980
100010251050110011251135119512001240127014201595169017901800187018951945200022502525
BeltLength
mmWtgms
21262729303132333535363840414447495053535454565961
12
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 12
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8mm Pitch Standard Metric Belts Type 8MBelt
Lengthmm
No.Teeth
20mm Wide Belt 30mm Wide Belt 50mm Wide Belt
Cat. No. Wt kg Cat. No. Wt kg Cat. No. Wt kg
288320352360384408456480536544560600608632640680720800840880896920960
288-8M20320-8M20352-8M20360-8M20384-8M20408-8M20456-8M20480-8M20536-8M20544-8M20560-8M20600-8M20608-8M20632-8M20640-8M20680-8M20720-8M20800-8M20840-8M20880-8M20896-8M20920-8M20960-8M20
3640444548515760676870757679808590
100105110112115120
0.0330.0360.0400.0410.0430.0460.0520.0540.0610.0610.0630.0680.0690.0710.0720.0770.0810.0900.0950.0990.1010.1040.108
288-8M30320-8M30352-8M30360-8M30384-8M30408-8M30456-8M30480-8M30536-8M30544-8M30560-8M30600-8M30608-8M30632-8M30640-8M30680-8M30720-8M30800-8M30840-8M30880-8M30896-8M30920-8M30960-8M30
0.0490.0540.0600.0610.0650.0690.0770.0810.0910.0920.0950.1020.1030.1070.1080.1150.1220.1360.1420.1490.1520.1560.163
288-8M50320-8M50352-8M50360-8M50384-8M50408-8M50456-8M50480-8M50536-8M50544-8M50560-8M50600-8M50608-8M50632-8M50640-8M50680-8M50720-8M50800-8M50840-8M50880-8M50896-8M50920-8M50960-8M50
0.0810.0900.0990.1020.1080.1150.1290.1360.1510.1540.1580.1700.1720.1790.1810.1920.2030.2260.2370.2490.2530.2600.271
288-8M85320-8M85352-8M85360-8M85384-8M85408-8M85456-8M85480-8M85536-8M85544-8M85560-8M85600-8M85608-8M85632-8M85640-8M85680-8M85720-8M85800-8M85840-8M85880-8M85896-8M85920-8M85960-8M85
0.1380.1540.1690.1730.1840.1960.2190.2310.2570.2610.2690.2880.2920.3040.3070.3270.3460.3840.4030.4230.4300.4420.461
85mm Wide Belt
Cat. No. Wt kg
BeltLength
mmNo.
Teeth
20mm Wide Belt 30mm Wide Belt 50mm Wide Belt
Cat. No. Wt kg Cat. No. Wt kg Cat. No. Wt kg
10001040108011201200122412801352144014641600176018002000220024002520260028003048328036004400
1000-8M201040-8M201080-8M201120-8M201200-8M201224-8M201280-8M201352-8M201440-8M201464-8M201600-8M201760-8M201800-8M202000-8M202200-8M202400-8M202520-8M202600-8M202800-8M203048-8M203280-8M203600-8M204400-8M20
125130135140150153160169180183200220225250275300315325350381410450550
0.1130.1180.1220.1270.1360.1380.1450.1530.1630.1650.1810.1990.2030.2260.2490.2710.2850.2940.3160.3440.3710.4070.497
1000-8M301040-8M301080-8M301120-8M301200-8M301224-8M301280-8M301352-8M301440-8M301464-8M301600-8M301760-8M301800-8M302000-8M302200-8M302400-8M302520-8M302600-8M302800-8M303048-8M303280-8M303600-8M304400-8M30
0.1700.1760.1830.1900.2030.2070.2170.2290.2440.2480.2710.2960.3050.3390.3730.4070.4270.4410.4750.5170.5560.6100.746
1000-8M501040-8M501080-8M501120-8M501200-8M501224-8M501280-8M501352-8M501440-8M501464-8M501600-8M501760-8M501800-8M502000-8M502200-8M502400-8M502520-8M502600-8M502800-8M503048-8M503280-8M503600-8M504400-8M50
0.2830.2940.3050.3160.3390.3460.3620.3820.4070.4140.4520.4970.5090.5650.6220.6780.7120.7350.7910.8610.9271.0171.243
1000-8M851040-8M851080-8M851120-8M851200-8M851224-8M851280-8M851352-8M851440-8M851464-8M851600-8M851760-8M851800-8M852000-8M852200-8M852400-8M852520-8M852600-8M852800-8M853048-8M853280-8M853600-8M854400-8M85
0.4800.4990.5190.5380.5760.5880.6150.6490.6920.7030.7680.8450.8640.9611.0571.1531.2101.2491.3451.4641.5751.7292.113
85mm Wide Belt
Cat. No. Wt kg
10001040108011201200122412801352144014641600176018002000220024002520260028003048328036004400
288320352360384408456480536544560600608632640680720800840880896920960
8mm Pitch RPP Silver High Power Belts Type 8SBelt
Lengthmm
No.Teeth
20mm Wide Belt
Cat. No. Wt kg
30mm Wide Belt
Cat. No. Wt kg
50mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
288-8S20320-8S20352-8S20360-8S20384-8S20408-8S20456-8S20480-8S20536-8S20544-8S20560-8S20600-8S20608-8S20632-8S20640-8S20680-8S20720-8S20800-8S20840-8S20880-8S20896-8S20920-8S20960-8S20
3640444548515760676870757679808590
100105110112115120
0.0330.0360.0400.0410.0430.0460.0520.0540.0610.0610.0630.0680.0690.0710.0720.0770.0810.0900.0950.0990.1010.1040.108
288-8S30320-8S30352-8S30360-8S30384-8S30408-8S30456-8S30480-8S30536-8S30544-8S30560-8S30600-8S30608-8S30632-8S30640-8S30680-8S30720-8S30800-8S30840-8S30880-8S30896-8S30920-8S30960-8S30
0.0490.0540.0600.0610.0650.0690.0770.0810.0910.0920.0950.1020.1030.1070.1080.1150.1220.1360.1420.1490.1520.1560.163
288-8S50320-8S50352-8S50360-8S50384-8S50408-8S50458-8S50480-8S50536-8S50544-8S50560-8S50600-8S50608-8S50632-8S50640-8S50680-8S50720-8S50800-8S50840-8S50880-8S50896-8S50920-8S50960-8S50
0.0810.0900.0990.1020.1080.1150.1290.1360.1510.1540.1580.1700.1720.1790.1810.1920.2030.2260.2370.2490.2530.2600.271
288-8S85320-8S85352-8S85360-8S85384-8S85408-8S85456-8S85480-8S85536-8S85544-8S85560-8S85600-8S85608-8S85632-8S85640-8S85680-8S85720-8S85800-8S85840-8S85880-8S85896-8S85920-8S85960-8S85
0.1360.1540.1690.1730.1840.1960.2190.2310.2570.2610.2690.2880.2920.3040.3070.3270.3460.3840.4030.4230.4300.4420.461
BeltLength
mmNo.
Teeth20mm Wide Belt
Cat. No. Wt kg
30mm Wide Belt
Cat. No. Wt kg
50mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
1000-8S201040-8S201080-8S201120-8S201200-8S201224-8S201280-8S201352-8S201440-8S201464-8S201600-8S201760-8S201800-8S202000-8S202200-8S202400-8S202520-8S202600-8S202800-8S203048-8S203280-8S203600-8S204400-8S20
125130135140150153160169180183200220225250275300315325350381410450550
0.1130.1180.1220.1270.1360.1380.1450.1530.1630.1650.1810.1990.2030.2260.2490.2710.2850.2940.3160.3440.3710.4070.497
1000-8S301040-8S301080-8S301120-8S301200-8S301224-8S301280-8S301352-8S301440-8S301464-8S301600-8S301760-8S301800-8S302000-8S302200-8S302400-8S302520-8S302600-8S302800-8S303048-8S303280-8S303600-8S304400-8S30
0.1700.1760.1830.1900.2030.2070.2170.2290.2440.2480.2710.2980.3050.3390.3730.4070.4270.4410.4750.5170.5560.6100.746
1000-8S501040-8S501080-8S501120-8S501200-8S501224-8S501280-8S501352-8S501440-8S501464-8S501600-8S501760-8S501800-8S502000-8S502200-8S502400-8S502520-8S502600-8S502800-8S503048-8S503280-8S503600-8S504400-8S50
0.2830.2940.3050.3160.3390.3460.3620.3820.4070.4140.4520.4970.5090.5650.6220.6780.7120.7350.7910.8610.9271.0171.243
1000-8S851040-8S851080-8S851120-8S851200-8S851224-8S851280-8S851352-8S851440-8S851464-8S851600-8S851760-8S851800-8S852000-8S852200-8S852400-8S852520-8S852600-8S852800-8S853048-8S853280-8S853600-8S854400-8S85
0.4800.4990.5190.5380.5760.5880.6150.6490.6920.7030.7680.8450.8640.9611.0571.1531.2101.2491.3451.4641.5751.7292.113
13
288320352360384408456480536544560600608632640680720800840880896920960
288-8G20320-8G20352-8G20360-8G20384-8G20408-8G20456-8G20480-8G20536-8G20544-8G20560-8G20600-8G20608-8G20632-8G20640-8G20680-8G20720-8G20800-8G20840-8G20880-8G20896-8G20920-8G20960-8G20
3640444548515760676870757679808590
100105110112115120
0.0330.0360.0400.0410.0430.0460.0520.0540.0610.0610.0630.0680.0690.0710.0720.0770.0810.0900.0950.0990.1010.1040.108
288-8G30320-8G30352-8G30360-8G30384-8G30408-8G30456-8G30480-8G30536-8G30544-8G30560-8G30600-8G30608-8G30632-8G30640-8G30680-8G30720-8G30800-8G30840-8G30880-8G30896-8G30920-8G30960-8G30
0.0490.0540.0600.0610.0650.0690.0770.0810.0910.0920.0950.1020.1030.1070.1080.1150.1220.1360.1420.1490.1520.1560.163
288-8G50320-8G50352-8G50360-8G50384-8G50408-8G50456-8G50480-8G50536-8G50544-8G50560-8G50600-8G50608-8G50632-8G50640-8G50680-8G50720-8G50800-8G50840-8G50880-8G50896-8G50920-8G50960-8G50
0.0810.0900.0990.1020.1080.1150.1290.1360.1510.1540.1580.1700.1720.1790.1810.1920.2030.2260.2370.2490.2530.2600.271
288-8G85320-8G85352-8G85360-8G85384-8G85408-8G85456-8G85480-8G85536-8G85544-8G85560-8G85600-8G85608-8G85632-8G85640-8G85680-8G85720-8G85800-8G85840-8G85880-8G85896-8G85920-8G85960-8G85
0.1380.1540.1690.1730.1840.1960.2190.2310.2570.2610.2690.2880.2920.3040.3070.3270.3460.3840.4030.4230.4300.4420.461
10001040108011201200122412801352144014641600176018002000220024002520260028003048328036004400
8mm Pitch Gold High Power Belts Type 8GBelt
Lengthmm
No.Teeth
20mm Wide Belt
Cat. No. Wt kg
30mm Wide Belt
Cat. No. Wt kg
50mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
BeltLength
mmNo.
Teeth20mm Wide Belt
Cat. No. Wt kg
30mm Wide Belt
Cat. No. Wt kg
50mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
1000-8G201040-8G201080-8G201120-8G201200-8G201224-8G201280-8G201352-8G201440-8G201464-8G201600-8G201760-8G201800-8G202000-8G202200-8G202400-8G202520-8G202600-8G202800-8G203048-8G203280-8G203600-8G204400-8G20
125130135140150153160169180183200220225250275300315325350381410450550
0.1130.1180.1220.1270.1360.1380.1450.1530.1630.1650.1810.1990.2030.2260.2490.2710.2850.2940.3160.3440.3710.4070.497
1000-8G301040-8G301080-8G301120-8G301200-8G301224-8G301280-8G301352-8G301440-8G301464-8G301600-8G301760-8G301800-8G302000-8G302200-8G302400-8G302520-8G302600-8G302800-8G303048-8G303280-8G303600-8G304400-8G30
0.1700.1760.1830.1900.2030.2070.2170.2290.2440.2480.2710.2980.3050.3390.3730.4070.4270.4410.4750.5170.5560.6100.746
1000-8G501040-8G501080-8G501120-8G501200-8G501224-8G501280-8G501352-8G501440-8G501464-8G501600-8G501760-8G501800-8G502000-8G502200-8G502400-8G502520-8G502600-8G502800-8G503048-8G503280-8G503600-8G504400-8G50
0.2830.2940.3050.3160.3390.3460.3620.3820.4070.4140.4520.4970.5090.5650.6220.6780.7120.7350.7910.8610.9271.0171.243
1000-8G851040-8G851080-8G851120-8G851200-8G851224-8G851280-8G851352-8G851440-8G851464-8G851600-8G851760-8G851800-8G852000-8G852200-8G852400-8G852520-8G852600-8G852800-8G853048-8G853280-8G853600-8G854400-8G85
0.4800.4990.5190.5380.5760.5880.6150.6490.6920.7030.7680.8450.8640.9611.0571.1531.2101.2491.3451.4641.5751.7292.113
High Power RPP Silver and RPP Gold BeltsThe improved design RPP Silver and RPP Gold Belts cantransmit higher torques whilst still operating on standard HTDpulleys. Replacing a standard metric belt with the equivalentRPP belt can enable up to 100% more torque transmission,whilst the equivalent RPP Gold belt provides up to 200% more.
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 13
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
14
14mm Pitch Standard Metric Belts Type 14MBelt
Lengthmm
No.Teeth
40mm Wide Belt 55mm Wide Belt 85mm Wide Belt
Cat. No. Wt kg Cat. No. Wt kg Cat. No. Wt kg
966994
10921106119012601288134414001442156816101764177818481890190419602100224023102380245025902660280031503360350038503920432645784956
966-14M40994-14M40
1092-14M401106-14M401190-14M401260-14M401288-14M401344-14M401400-14M401442-14M401568-14M401610-14M401764-14M401778-14M401848-14M401890-14M401904-14M401960-14M402100-14M402240-14M402310-14M402380-14M402450-14M402590-14M402660-14M402800-14M403150-14M403360-14M403500-14M403850-14M403920-14M404326-14M404578-14M404956-14M40
6971787985909296
100103112115126127132135136140150160165170175185190200225240250275280309327354
0.380.390.430.440.470.500.510.530.550.570.620.630.700.700.730.740.750.770.830.880.910.940.971.021.051.101.241.321.381.521.541.701.801.95
966-14M55994-14M55
1092-14M551106-14M551190-14M551260-14M551288-14M551344-14M551400-14M551442-14M551568-14M551610-14M551764-14M551778-14M551848-14M551890-14M551904-14M551960-14M552100-14M552240-14M552310-14M552380-14M552450-14M552590-14M552660-14M552800-14M553150-14M553360-14M553500-14M553850-14M553920-14M554326-14M554578-14M554956-14M55
0.520.540.590.600.640.680.700.730.760.780.850.870.960.961.001.021.031.061.141.211.251.291.331.401.441.521.711.821.902.092.122.342.482.68
966-14M85994-14M85
1092-14M851106-14M851190-14M851260-14M851288-14M851344-14M851400-14M851442-14M851568-14M551610-14M851764-14M851778-14M851848-14M851890-14M851904-14M851960-14M852100-14M852240-14M852310-14M852380-14M852450-14M852590-14M852660-14M852800-14M853150-14M853360-14M853500-14M853850-14M853920-14M854326-14M854578-14M854956-14M85
0.810.830.910.931.001.051.081.131.171.211.311.351.481.491.551.581.591.641.761.881.931.992.052.172.232.342.642.812.933.223.283.623.834.15
966-14M115994-14M115
1092-14M1151106-14M1151190-14M1151260-14M1151288-14M1151344-14M1151400-14M1151442-14M1151568-14M1151610-14M1151764-14M1151778-14M1151848-14M1151890-14M1151904-14M1151960-14M1152100-14M1152240-14M1152310-14M1152380-14M1152450-14M1152590-14M1152660-14M1152800-14M1153150-14M1153360-14M1153500-14M1153850-14M1153920-14M1154326-14M1154578-14M1154956-14M115
1.091.131.241.251.351.431.461.521.591.631.781.822.002.012.092.142.162.222.382.542.622.702.782.933.013.173.573.813.964.364.444.905.195.61
966-14M170994-14M170
1092-14M1701106-14M1701190-14M1701260-14M1701288-14M1701344-14M1701400-14M1701442-14M1701568-14M1701610-14M1701764-14M1701778-14M1701848-14M1701890-14M1701904-14M1701960-14M1702100-14M1702240-14M1702310-14M1702380-14M1702450-14M1702590-14M1702660-14M1702800-14M1703150-14M1703360-14M1703500-14M1703850-14M1703920-14M1704326-14M1704578-14M1704956-14M170
1.621.661.831.851.992.112.162.252.342.412.632.702.952.983.093.163.193.283.523.753.873.994.104.344.454.695.275.635.866.456.567.247.678.30
115mm Wide Belt 170mm Wide Belt
Cat. No. Wt kg Cat. No. Wt kg
1.091.131.241.251.351.431.461.521.591.631.781.822.002.012.092.142.162.222.382.542.622.702.782.933.013.173.573.813.964.364.444.905.195.61
966994
10921106119012601288134414001442156816101764177818481890190419602100224023102380245025902660280031503360350038503920432645784956
14mm Pitch RPP Silver High Power Belts Type 14SBelt
Lengthmm
No.Teeth
40mm Wide Belt
Cat. No. Wt kg
55mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
115mm Wide Belt 170mm Wide Belt
Cat. No. Wt kg
966-14S40994-14S40
1092-14S401106-14S401190-14S401260-14S401288-14S401344-14S401400-14S401442-14S401568-14S401610-14S401764-14S401778-14S401848-14S401890-14S401904-14S401960-14S402100-14S402240-14S402310-14S402380-14S402450-14S402590-14S402660-14S402800-14S403150-14S403360-14S403500-14S403850-14S403920-14S404326-14S404578-14S404956-14S40
6971787985909296
100103112115126127132135136140150160165170175185190200225240250275280309327354
0.380.390.430.440.470.500.510.530.550.570.620.630.700.700.730.740.750.770.830.880.910.940.971.021.051.101.241.321.381.521.541.701.801.95
966-14S55994-14S55
1092-14S551106-14S551190-14S551260-14S551288-14S551344-14S551400-14S551442-14S551568-14S551610-14S551764-14S551778-14S551848-14S551890-14S551904-14S551960-14S552100-14S552240-14S552310-14S552380-14S552450-14S552590-14S552660-14S552800-14S553150-14S553360-14S553500-14S553850-14S553920-14S554326-14S554578-14S554956-14S55
0.520.540.590.600.640.680.700.730.760.780.850.870.960.961.001.021.031.061.141.211.251.291.331.401.441.521.711.821.902.092.122.342.482.68
966-14S85994-14S85
1092-14S851106-14S851190-14S851260-14S851288-14S851344-14S851400-14S851442-14S851568-14S851610-14S851764-14S851778-14S851848-14S851890-14S851904-14S851960-14S852100-14S852240-14S852310-14S852380-14S852450-14S852590-14S852660-14S852800-14S853150-14S853360-14S853500-14S853850-14S853920-14S854326-14S854578-14S854956-14S85
0.810.830.910.931.001.051.081.131.171.211.311.351.481.491.551.581.591.641.761.881.931.992.052.172.232.342.642.812.933.223.283.623.834.15
966-14S115994-14S115
1092-14S1151106-14S1151190-14S1151260-14S1151288-14S1151344-14S1151400-14S1151442-14S1151568-14S1151610-14S1151764-14S1151778-14S1151848-14S1151890-14S1151904-14S1151960-14S1152100-14S1152240-14S1152310-14S1152380-14S1152450-14S1152590-14S1152660-14S1152800-14S1153150-14S1153360-14S1153500-14S1153850-14S1153920-14S1154326-14S1154578-14S1154956-14S115
Cat. No. Wt kg
966-14S170994-14S170
1092-14S1701106-14S1701190-14S1701260-14S1701288-14S1701344-14S1701400-14S1701442-14S1701568-14S1701610-14S1701764-14S1701778-14S1701848-14S1701890-14S1701904-14S1701960-14S1702100-14S1702240-14S1702310-14S1702380-14S1702450-14S1702590-14S1702660-14S1702800-14S1703150-14S1703360-14S1703500-14S1703850-14S1703920-14S1704326-14S1704578-14S1704956-14S170
1.621.661.831.851.992.112.162.252.342.412.632.702.952.983.093.163.193.283.523.753.873.994.104.344.454.695.275.635.866.456.567.247.678.30
966994
10921106119012601288134414001442156816101764177818481890190419602100224023102380245025902660280031503360350038503920432645784956
BeltLength
mmNo.
Teeth40mm Wide Belt
Cat. No. Wt kg
55mm Wide Belt
Cat. No. Wt kg
85mm Wide Belt
Cat. No. Wt kg
115mm Wide Belt 170mm Wide Belt
Cat. No. Wt kg
966-14G40994-14G40
1092-14G401106-14G401190-14G401260-14G401288-14G401344-14G401400-14G401442-14G401568-14G401610-14G401764-14G401778-14G401848-14G401890-14G401904-14G401960-14G402100-14G402240-14G402310-14G402380-14G402450-14G402590-14G402660-14G402800-14G403150-14G403360-14G403500-14G403850-14G403920-14G404326-14G404578-14G404956-14G40
6971787985909296100103112115126127132135136140150160165170175185190200225240250275280309327354
0.380.390.430.440.470.500.510.530.550.570.620.630.700.700.730.740.750.770.830.880.910.940.971.021.051.101.241.321.381.521.541.701.801.95
966-14G55994-14G55
1092-14G551106-14G551190-14G551260-14G551288-14G551344-14G551400-14G551442-14G551568-14G551610-14G551764-14G551778-14G551848-14G551890-14G551904-14G551960-14G552100-14G552240-14G552310-14G552380-14G552450-14G552590-14G552660-14G552800-14G553150-14G553360-14G553500-14G553850-14G553920-14G554326-14G554578-14G554956-14G55
0.520.540.590.600.640.680.700.730.760.780.850.870.960.961.001.021.031.061.141.211.251.291.331.401.441.521.711.821.902.092.122.342.482.68
966-14G85994-14G85
1092-14G851106-14G851190-14G851260-14G851288-14G851344-14G851400-14G851442-14G851568-14G851610-14G851764-14G851778-14G851848-14G851890-14G851904-14G851960-14G852100-14G852240-14G852310-14G852380-14G852450-14G852590-14G852660-14G852800-14G853150-14G853360-14G853500-14G853850-14G853920-14G854326-14G854578-14G854956-14G85
0.810.830.910.931.001.051.081.131.171.211.311.351.481.491.551.581.591.641.761.881.931.992.052.172.232.342.642.812.933.223.283.623.834.15
966-14G115994-14G115
1092-14G1151106-14G1151190-14G1151260-14G1151288-14G1151344-14G1151400-14G1151442-14G1151568-14G1151610-14G1151764-14G1151778-14G1151848-14G1151890-14G1151904-14G1151960-14G1152100-14G1152240-14G1152310-14G1152380-14G1152450-14G1152590-14G1152660-14G1152800-14G1153150-14G1153360-14G1153500-14G1153850-14G1153920-14G1154326-14G1154578-14G1154956-14G115
1.091.131.241.251.351.431.461.521.591.631.781.822.002.012.092.142.162.222.382.542.622.702.782.933.013.173.573.813.964.364.444.905.195.61
966-14G170994-14G170
1092-14G1701106-14G1701190-14G1701260-14G1701288-14G1701344-14G1701400-14G1701442-14G1701568-14G1701610-14G1701764-14G1701778-14G1701848-14G1701890-14G1701904-14G1701960-14G1702100-14G1702240-14G1702310-14G1702380-14G1702450-14G1702590-14G1702660-14G1702800-14G1703150-14G1703360-14G1703500-14G1703850-14G1703920-14G1704326-14G1704578-14G1704956-14G170
1.621.661.831.851.992.112.162.252.342.412.632.702.952.983.093.163.193.283.523.753.873.994.104.344.454.695.275.635.866.456.567.247.678.30
Cat. No. Wt kg
14mm Pitch Gold High Power Belts Type 14G
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 14
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
15
600-5M25DD610-5M25DD615-5M25DD635-5M25DD640-5M25DD670-5M25DD675-5M25DD700-5M25DD705-5M25DD710-5M25DD725-5M25DD740-5M25DD750-5M25DD755-5M25DD800-5M25DD835-5M25DD850-5M25DD890-5M25DD900-5M25DD935-5M25DD940-5M25DD950-5M25DD980-5M25DD
1000-5M25DD1025-5M25DD1050-5M25DD1100-5M25DD1125-5M25DD1135-5M25DD1195-5M25DD1200-5M25DD1240-5M25DD1270-5M25DD1420-5M25DD1595-5M25DD1690-5M25DD1790-5M25DD1800-5M25DD1870-5M25DD1895-5M25DD1945-5M25DD2000-5M25DD2250-5M25DD2525-5M25DD
42434344454747494950515252535658606263656667697072747779798484878999
112118125126131133136140158177
600-5M15DD610-5M15DD615-5M15DD635-5M15DD640-5M15DD670-5M15DD675-5M15DD700-5M15DD705-5M15DD710-5M15DD725-5M15DD740-5M15DD750-5M15DD755-5M15DD800-5M15DD835-5M15DD850-5M15DD890-5M15DD900-5M15DD935-5M15DD940-5M15DD950-5M15DD980-5M15DD
1000-5M15DD1025-5M15DD1050-5M15DD1100-5M15DD1125-5M15DD1135-5M15DD1195-5M15DD1200-5M15DD1240-5M15DD1270-5M15DD1420-5M15DD1595-5M15DD1690-5M15DD1790-5M15DD1800-5M15DD1870-5M15DD1895-5M15DD1945-5M15DD2000-5M15DD2250-5M15DD2525-5M15DD
600610615635640670675700705710725740750755800835850890900935940950980
100010251050110011251135119512001240127014201595169017901800187018951945200022502525
Metric Series Timing Belt Drives
Double Sided Metric BeltsDouble-sided belts have teeth equally constructed on each side of the belt, which enables them to mesh with toothed pulleys onboth the inside and outside. The construction of the belts is basically the same as standard Metric belts, except that the nylon facing is also on the backing teeth, enabling full torque transmission from each side of the belt.
Double sided belts enable:-
• Reverse motion between internal and external pulleys. • Require only one belt to drive a series of pulleys.
• Simplified design layouts and weight reduction.
Standard Double sided belts are available in three sizes, 5M, 8M, and 14M, all operating on standard HTD pulleys.
5mm Pitch Double Sided Metric Belts Type 5M-DDBelt
Lengthmm
No.Teeth Cat. No.
600-5M9DD610-5M9DD615-5M9DD635-5M9DD640-5M9DD670-5M9DD675-5M9DD700-5M9DD705-5M9DD710-5M9DD725-5M9DD740-5M9DD750-5M9DD755-5M9DD800-5M9DD835-5M9DD850-5M9DD890-5M9DD900-5M9DD935-5M9DD940-5M9DD950-5M9DD980-5M9DD
1000-5M9DD1025-5M9DD1050-5M9DD1100-5M9DD1125-5M9DD1135-5M9DD1195-5M9DD1200-5M9DD1240-5M9DD1270-5M9DD1420-5M9DD1595-5M9DD1690-5M9DD1790-5M9DD1800-5M9DD1870-5M9DD1895-5M9DD1945-5M9DD2000-5M9DD2250-5M9DD2525-5M9DD
120122123127128134135140141142145148150151160167170178180187188190196200205210220225227239240248254284319338358360374379389400450505
25262627272828293030303131323435363738393940414243444647485050525360677175767980828495
106
9mm Wide Belt 15mm Wide Belt
Cat. No. WtgmsWtgms
7071727475787982828385878788949899
104106109110111115117120123129132133140140145149166187198209211219222228234263295
25mm Wide Belt
Cat. No. Wtgms
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 15
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
16
8mm Pitch Double Sided Metric Belts Type 8M-DD
Cat. No.
0.1700.1720.1790.1810.1920.2030.2260.2370.2490.2530.2600.2710.2830.2940.3050.3160.3390.3460.3620.3820.4070.4140.4520.4970.5090.5650.6220.6780.7120.7350.7910.8610.9271.0171.243
600-8M50DD608-8M50DD632-8M50DD640-8M50DD680-8M50DD720-8M50DD800-8M50DD840-8M50DD880-8M50DD896-8M50DD920-8M50DD960-8M50DD
1000-8M50DD1040-8M50DD1080-8M50DD1120-8M50DD1200-8M50DD1224-8M50DD1280-8M50DD1352-8M50DD1440-8M50DD1464-8M50DD1600-8M50DD1760-8M50DD1800-8M50DD2000-8M50DD2200-8M50DD2400-8M50DD2520-8M50DD2600-8M50DD2800-8M50DD3048-8M50DD3280-8M50DD3600-8M50DD4400-8M50DD
0.1020.1030.1070.1080.1150.1220.1360.1420.1490.1520.1560.1630.1700.1760.1830.1900.2030.2070.2170.2290.2440.2480.2710.2980.3050.3390.3730.4070.4270.4410.4750.5170.5560.6100.746
600608632640680720800840880896920960
10001040108011201200122412801352144014641600176018002000220024002520260028003048328036004400
BeltLength
mmNo.
Teeth Cat. No.
600-8M20DD608-8M20DD632-8M20DD640-8M20DD680-8M20DD720-8M20DD800-8M20DD840-8M20DD880-8M20DD896-8M20DD920-8M20DD960-8M20DD
1000-8M20DD1040-8M20DD1080-8M20DD1120-8M20DD1200-8M20DD1224-8M20DD1280-8M20DD1352-8M20DD1440-8M20DD1464-8M20DD1600-8M20DD1760-8M20DD1800-8M20DD2000-8M20DD2200-8M20DD2400-8M20DD2520-8M20DD2600-8M20DD2800-8M20DD3048-8M20DD3280-8M20DD3600-8M20DD4400-8M20DD
757679808590
100105110112115120125130135140150153160169180183200220225250275300315325350381410450550
0.0680.0690.0710.0720.0770.0810.0900.0950.0990.1010.1040.1080.1130.1180.1220.1270.1360.1380.1450.1530.1630.1650.1810.1990.2030.2260.2490.2710.2850.2940.3160.3440.3710.4070.497
20mm Wide Belt 30mm Wide Belt
Cat. No.Wt kg
50mm Wide Belt
600-8M30DD608-8M30DD632-8M30DD640-8M30DD680-8M30DD720-8M30DD800-8M30DD840-8M30DD880-8M30DD896-8M30DD920-8M30DD960-8M30DD
1000-8M30DD1040-8M30DD1080-8M30DD1120-8M30DD1200-8M30DD1224-8M30DD1280-8M30DD1352-8M30DD1440-8M30DD1464-8M30DD1600-8M30DD1760-8M30DD1800-8M30DD2000-8M30DD2200-8M30DD2400-8M30DD2520-8M30DD2600-8M30DD2800-8M30DD3048-8M30DD3280-8M30DD3600-8M30DD4400-8M30DD
Wt kg Wt kg
85mm Wide Belt
Cat. No. Wt kg
0.2880.2920.3040.3070.3270.3460.3840.4030.4230.4300.4420.4610.4800.4990.5190.5380.5760.5880.6150.6490.6920.7030.7680.8450.8640.9611.0571.1531.2101.2491.3451.4641.5751.7292.113
600-8M85DD608-8M85DD632-8M85DD640-8M85DD680-8M85DD720-8M85DD800-8M85DD840-8M85DD880-8M85DD896-8M85DD920-8M85DD960-8M85DD
1000-8M85DD1040-8M85DD1080-8M85DD1120-8M85DD1200-8M85DD1224-8M85DD1280-8M85DD1352-8M85DD1440-8M85DD1464-8M85DD1600-8M85DD1760-8M85DD1800-8M85DD2000-8M85DD2200-8M85DD2400-8M85DD2520-8M85DD2600-8M85DD2800-8M85DD3048-8M85DD3280-8M85DD3600-8M85DD4400-8M85DD
Wt kg
115mm Wide Belt85mm Wide Belt40mm Wide Belt
966994
1092110611901260128813441400144215681610175017641778184818901904196021002240231023802450259026602800296831503360350038503920432645784956
6971787985909296
100103112115125126127132135136140150160165170175185190200212225240250275280309327354
14mm Pitch Double-sided Metric Belts Type 14M- DD
Cat. No.
BeltLength
mmNo.
Teeth Cat. No.
55mm Wide Belt
Cat. No.Wt kg Wt kg Wt kg Cat. No.
966-14M40DD994-14M40DD
1092-14M40DD1106-14M40DD1190-14M40DD1260-14M40DD1288-14M40DD1344-14M40DD1400-14M40DD1442-14M40DD1568-14M40DD1610-14M40DD1750-14M40DD1764-14M40DD1778-14M40DD1848-14M40DD1890-14M40DD1904-14M40DD1960-14M40DD2100-14M40DD2240-14M40DD2310-14M40DD2380-14M40DD2450-14M40DD2590-14M40DD2660-14M40DD2800-14M40DD2968-14M40DD3150-14M40DD3360-14M40DD3500-14M40DD3850-14M40DD3920-14M40DD4326-14M40DD4578-14M40DD4956-14M40DD
0.380.390.430.440.470.500.510.530.550.570.620.630.690.700.700.730.740.750.770.830.880.910.940.971.021.051.101.171.241.321.381.521.541.701.801.95
966-14M55DD994-14M55DD
1092-14M55DD1106-14M55DD1190-14M55DD1260-14M55DD1288-14M55DD1344-14M55DD1400-14M55DD1442-14M55DD1568-14M55DD1610-14M55DD1750-14M55DD1764-14M55DD1778-14M55DD1848-14M55DD1890-14M55DD1904-14M55DD1960-14M55DD2100-14M55DD2240-14M55DD2310-14M55DD2380-14M55DD2450-14M55DD2590-14M55DD2660-14M55DD2800-14M55DD2968-14M55DD3150-14M55DD3360-14M55DD3500-14M55DD3850-14M55DD3920-14M55DD4326-14M55DD4578-14M55DD4956-14M55DD
0.520.540.590.600.640.680.700.730.760.780.850.870.950.960.961.001.021.031.061.141.211.251.291.331.401.441.521.611.711.821.902.092.122.342.482.68
966-14M85DD994-14M85DD
1092-14M85DD1106-14M85DD1190-14M85DD1260-14M85DD1288-14M85DD1344-14M85DD1400-14M85DD1442-14M85DD1568-14M85DD1610-14M85DD1750-14M85DD1764-14M85DD1778-14M85DD1848-14M85DD1890-14M85DD1904-14M85DD1960-14M85DD2100-14M85DD2240-14M85DD2310-14M85DD2380-14M85DD2450-14M85DD2590-14M85DD2660-14M85DD2800-14M85DD2968-14M85DD3150-14M85DD3360-14M85DD3500-14M85DD3850-14M85DD3920-14M85DD4326-14M85DD4578-14M85DD4956-14M85DD
0.810.830.910.931.001.051.081.131.171.211.311.351.471.481.491.551.581.591.641.761.881.931.992.052.172.232.342.482.642.812.933.223.283.623.834.15
966-14M115DD994-14M115DD
1092-14M115DD1106-14M115DD1190-14M115DD1260-14M115DD1288-14M115DD1344-14M115DD1400-14M115DD1442-14M115DD1568-14M115DD1610-14M115DD1750-14M115DD1764-14M115DD1778-14M115DD1848-14M115DD1890-14M115DD1904-14M115DD1960-14M115DD2100-14M115DD2240-14M115DD2310-14M115DD2380-14M115DD2450-14M115DD2590-14M115DD2660-14M115DD2800-14M115DD2968-14M115DD3150-14M115DD3360-14M115DD3500-14M115DD3850-14M115DD3920-14M115DD4326-14M115DD4578-14M115DD4956-14M115DD
1.091.131.241.251.351.431.461.521.591.631.781.821.982.002.012.092.142.162.222.382.542.622.702.782.933.013.173.363.573.813.964.364.444.905.195.61
966-14M170DD994-14M170DD
1092-14M170DD1106-14M170DD1190-14M170DD1260-14M170DD1288-14M170DD1344-14M170DD1400-14M170DD1442-14M170DD1568-14M170DD1610-14M170DD1750-14M170DD1764-14M170DD1778-14M170DD1848-14M170DD1890-14M170DD1904-14M170DD1960-14M170DD2100-14M170DD2240-14M170DD2310-14M170DD2380-14M170DD2450-14M170DD2590-14M170DD2660-14M170DD2800-14M170DD2968-14M170DD3150-14M170DD3360-14M170DD3500-14M170DD3850-14M170DD3920-14M170DD4326-14M170DD4578-14M170DD4956-14M170DD
1.621.661.831.851.992.112.162.252.342.412.632.702.932.952.983.093.163.193.283.523.753.873.994.104.344.454.694.975.275.635.866.456.567.247.678.30
Wt kg
170mm Wide Belt
Cat. No.
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 16
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
17
.006
.008
.010
.012
.010
.012
.014
.016
.018
.020
.027
.030
.038
.045
.060
.075
.095
.103
.150
.210
PulleyType
CatalogueNo.
No.Teeth
Z
Pitch CircleDiameter
dp
HTD Timing Pulleys - 3M Belts
Cross & Morse HTD Pulleys are manufactured to close tolerances to ensure concentric running, and have precision generatedgear teeth to match the high power and speed capabilities of HTD drive belts. Only high quality materials are used for pulley manufacture; aluminium being selected for 3M and larger 5M pulleys to keep weight and inertia low; all other pulleys machinedfrom medium carbon steel bar or 260 Grade cast iron and finished with zinc phosphate for corrosion protection.Standard pulleys are offered with a large range of tooth sizes in widths to suit all standard HTD belts. Pulleys for 5M, 8M and14M drives are available with parallel pilot bore for reworking to customers requirements , bored for shaft clamping elements, orwith taper bore to be combined with stock taper brushes for the complete off- the Shelf drive. Pulleys of non-standard widths or numbers of teeth can be supplied to order, or teeth can be generated on customers own blanks.Smaller pulleys are fitted with two flanges to retain the drive belt, these being identified in tables by suffix ‘F’ on pulley type. Theflanges are pressed onto pulley body and retained by spin rivetting.
EF
Belt Size
Belt Width mm
3M
9 15 9 15 25
5M 8M 14M
20 30 50 85 40 55 85 115 170
10.213.4
1720
11.914.5
17.920.5
27.930.5
2328
3338
5560
9095
4754
6370
95102
126133
180187
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
Approx.Weight
kg
3mm Pitch Pulleys for 9mm wide Belts. Ref. 3M0910-3M-0912-3M-0914-3M-0915-3M-0916-3M-0918-3M-0920-3M-0921-3M-0922-3M-0924-3M-0926-3M-0928-3M-0930-3M-0932-3M-0936-3M-0940-3M-0944-3M-0948-3M-0960-3M-0972-3M-09
1012141516182021222426283032364044486072
0F0F0F0F1F1F1F1F1F1F1F1F1F1F1F1F1F111
9.5511.4613.3714.3215.2817.1919.1020.0521.0122.9224.8326.7428.6530.5534.3838.2042.0245.8457.3068.75
4.04.04.04.04.06.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
4.06.07.08.06.57.08.08.58.58.5
10.511.512.714.017.018.522.522.522.522.5
13.015.016.017.518.020.023.025.025.025.028.032.032.036.038.042.048.0
–––
10.210.210.210.212.812.812.812.812.812.812.812.812.812.813.413.413.413.413.413.4
3mm Pitch Pulleys for 15mm wide Belts. Ref. 3M15
8.810.712.613.614.516.418.319.320.322.224.126.027.929.833.637.441.345.156.568.0
17.517.517.517.520.620.620.620.620.620.620.620.620.620.622.222.222.222.222.222.2
13.015.016.017.510.011.013.013.013.013.016.018.020.022.026.028.033.033.033.033.0
.004
.006
.007
.008
.007
.008
.010
.013
.014
.016
.018
.024
.028
.032
.045
.055
.074
.074
.106
.145
3mm Pitch Pulleys for 6mm wide Belts. Ref. 3M0610-3M-0612-3M-0614-3M-0615-3M-0616-3M-0618-3M-0620-3M-0621-3M-0622-3M-0624-3M-0626-3M-0628-3M-0630-3M-0632-3M-0636-3M-0640-3M-0644-3M-0648-3M-0660-3M-0672-3M-06
1012141516182021222426283032364044486072
0F0F0F0F1F1F1F1F1F1F1F1F1F1F1F1F1F111
9.5511.4613.3714.3215.2817.1919.1020.0521.0122.9224.8326.7428.6530.5534.3838.2042.0245.8457.3068.75
4.04.04.04.04.06.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
4.06.07.08.06.57.08.08.58.58.5
10.511.512.714.017.018.522.522.522.522.5
13.015.016.017.518.020.023.025.025.025.028.032.032.036.038.042.048.0
–––
7.27.27.27.29.89.89.89.89.89.89.89.89.89.8
10.310.310.310.310.310.3
8.810.712.613.614.516.418.319.320.322.224.126.027.929.833.637.441.345.156.568.0
14.514.514.514.517.517.517.517.517.517.517.517.517.517.518.018.018.018.618.618.6
13.015.016.017.510.011.013.013.013.013.016.018.020.022.026.028.033.033.033.033.0
.003
.005
.006
.007
.006
.007
.008
.011
.012
.014
.016
.021
.024
.028
.039
.047
.062
.062
.091
.124
10-3M-1512-3M-1514-3M-1515-3M-1516-3M-1518-3M-1520-3M-1521-3M-1522-3M-1524-3M-1526-3M-1528-3M-1530-3M-1532-3M-1536-3M-1540-3M-1544-3M-1548-3M-1560-3M-1572-3M-15
1012141516182021222426283032364044486072
0F0F0F0F1F1F1F1F1F1F1F1F1F1F1F1F1F111
9.5511.4613.3714.3215.2817.1919.1020.0521.0122.9224.8326.7428.6530.5534.3838.2042.0245.8457.3068.75
4.04.04.04.04.06.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
4.06.07.08.06.57.08.08.58.58.5
10.511.512.714.017.018.522.522.522.522.5
8.810.712.613.614.516.418.319.320.322.224.126.027.929.833.637.441.345.156.568.0
13.015.016.017.518.020.023.025.025.025.028.032.032.036.038.042.048.0
–––
13.015.016.017.510.011.013.013.013.013.016.018.020.022.026.028.033.033.033.033.0
17.017.017.017.019.519.519.519.519.519.519.519.519.519.520.020.020.020.020.020.0
26.026.026.026.026.026.026.026.026.026.026.026.026.026.030.030.030.030.030.030.0
Type 1Material: Aluminium
Type 0FMaterial: Aluminium
dp do
F
d MA
L
d Mdp do
F
L
F
E
L
F
d MA dp do
Type 1FMaterial: Aluminium
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 17
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
18
HTD Timing Pulleys - 5M BeltsPulley TypesPulley types referred to in tables areas drawings below. The suffix ‘F’indicates pulley flanges
Pulley InstallationCorrect and accurate installation of Timing Drives is essential. Pulley alignment and shaft parallelism is very important as misalignment ofthe drive will cause unequal loading across the belt width and edge wear of belt on flanges. Pulley alignment can be checked by placing astraight edge against the outside edge of the pulleys and adjusting so contact made evenly across both pulleys.The shaft should be located within a rigid framework, as any distortion under load could result in a reduction of centre distance which willcause jumping of belt on pulley teeth. If idlers are used they must be locked firmly into position after correct belt tensioning. Refer to page 10 for additional on drive installation.
12-5M-2514-5M-2515-5M-2516-5M-2518-5M-2520-5M-2521-5M-2522-5M-2524-5M-2526-5M-2528-5M-2530-5M-2532-5M-2536-5M-2540-5M-25
44-5M-2548-5M-2560-5M-2572-5M-25
121415161820212224262830323640
44486072
19.1022.2823.8725.4628.6531.8333.4235.0138.2041.3844.5647.7550.9357.3063.66
70.0376.3995.49
114.59
4.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
8.08.08.08.0
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F
2222
78
10111314151618202024262626
26303030
18.021.122.724.327.530.732.333.937.140.243.446.649.856.262.5
68.975.394.4
113.5
20.520.520.520.520.520.520.520.520.520.520.520.520.520.520.5
20.520.520.520.5
26.026.026.026.026.026.026.026.028.028.028.028.028.028.028.0
30.030.030.030.0
12.013.016.016.520.023.024.025.527.030.030.535.038.038.038.0
38.045.045.045.0
_______________
546180
100
.034
.046
.056
.064
.086
.112
.130
.140
.180
.220
.250
.300
.350
.426
.520
.225
.187
.305
.375
23.025.028.028.032.036.038.038.042.044.048.051.054.060.070.0
____
12-5M-1514-5M-1515-5M-1516-5M-1518-5M-1520-5M-1521-5M-1522-5M-1524-5M-1526-5M-1528-5M-1530-5M-1532-5M-1536-5M-1540-5M-15
44-5M-1548-5M-1560-5M-1572-5M-15
CatalogueNo.
12-5M-0914-5M-0915-5M-0916-5M-0918-5M-0920-5M-0921-5M-0922-5M-0924-5M-0926-5M-0928-5M-0930-5M-0932-5M-0936-5M-0940-5M-09
44-5M-0948-5M-0960-5M-0972-5M-09
All dimensions in mm. Other sizes of Pulleys can be supplied on short delivery. Pulleys can be supplied bored and keywayed.For Taper Bore Pulleys see page 21.
No.Teeth
ZPulleyType
Pitch CircleDiameter
dp
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
Approx.Weight
kg
RimDiameter
N
5mm Pitch Pulleys for 9mm wide Belts. Ref. 5M09
5mm Pitch Pulleys for 15mm wide Belts. Ref. 5M15
121415161820212224262830323640
44486072
19.1022.2823.8725.4628.6531.8333.4235.0138.2041.3844.5647.7550.9357.3063.66
70.0376.3995.49
114.59
4.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
8.08.08.08.0
23.025.028.028.032.036.038.038.042.044.048.051.054.060.070.0
____
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F
2222
78
10111314151618202024262626
26263030
18.021.122.724.327.530.732.333.937.140.243.446.649.856.262.5
68.975.394.4
113.5
14.514.514.514.514.514.514.514.514.514.514.514.514.514.514.5
14.514.514.514.5
20.020.020.020.020.022.522.522.522.522.522.522.522.522.522.5
25.525.525.525.5
12.013.016.016.520.023.024.025.527.030.030.535.038.038.038.0
38.045.045.045.0
_______________
546180
100
.028
.034
.042
.050
.070
.094
.110
.118
.145
.170
.200
.236
.270
.324
.400
.170
.182
.230
.270
5mm Pitch Pulleys for 25mm wide Belts. Ref. 5M25
121415161820212224262830323640
44486072
19.1022.2823.8725.4628.6531.8333.4235.0138.2041.3844.5647.7550.9357.3063.66
70.0376.3995.49
114.59
4.06.06.06.06.06.06.06.06.06.06.06.08.08.08.0
8.08.08.08.0
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F
2222
78
10111314151618202024262626
26303030
18.021.122.724.327.530.732.333.937.140.243.446.649.856.262.5
68.975.394.4
113.5
30.530.530.530.530.530.530.530.530.530.530.530.530.530.530.5
30.530.530.530.5
36.036.036.036.036.036.038.038.038.038.038.038.038.038.038.0
40.040.040.040.0
12.013.016.016.520.023.024.025.527.030.030.535.038.038.038.0
38.045.045.045.0
–––––––––––––––
546180
100
0.500.700.80.100.120.160.180.210.250.300.350.420.485.595.745
.320
.275
.435
.525
23.025.028.028.032.036.038.038.042.044.048.051.054.060.070.0
____
L
F
d MA dp do
FL
dodp N d M
Type 2Material: Aluminium
Type 1FMaterial: Steel
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:50 Page 18
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
19
*Non-stock items, manufactured to customer order only. All dimensions in mm.Standard Pulleys can be reworked to customers bore and keyway requirements
105105105105105105105105105105105105105
9595
959595959595
P22-8M-50P24-8M-50P26-8M-50P28-8M-50P30-8M-50P32-8M-50P34-8M-50P36-8M-50P38-8M-50P40-8M-50P44-8M-50P48-8M-50P56-8M-50P64-8M-50P72-8M-50
P80-8M-50P90-8M-50
P112-8M-50P144-8M-50P168-8M-50P192-8M-50
P22-8M-85P24-8M-85P26-8M-85P28-8M-85P30-8M-85P32-8M-85P34-8M-85P36-8M-85P38-8M-85P40-8M-85P44-8M-85P48-8M-85P56-8M-85P64-8M-85P72-8M-85
P80-8M-85P90-8M-85
P112-8M-85P144-8M-85P168-8M-85P192-8M-85
Approx.Weight
kg
P22-8M-20P24-8M-20P26-8M-20P28-8M-20P30-8M-20P32-8M-20P34-8M-20P36-8M-20P38-8M-20P40-8M-20P44-8M-20P48-8M-20P56-8M-20P64-8M-20P72-8M-20
P80-8M-20P90-8M-20
P112-8M-20P144-8M-20P168-8M-20P192-8M-20
CatalogueNo.
Plain Bore Pulleys 8M Belts
Pulley TypesThe Pulley types referred to in tables are as drawings below. Suffix ‘F’ indicates pulley has flanges. Pulley below dividing line in tables are manufactured in cast iron. Pulleys 112 teeth(80 teeth on 8M-85) and aboveincorporate lightening holes indesign.
No.Teeth
Z
PulleyType
PitchCircle
Diameterdp
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
222426283032343638404448566472
8090
112144168192
1F1F1F1F1F1F1F1F1F1F1F1F2F2F2F
222222
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
203.72229.18285.21366.69427.81488.92
121212151515151515151515151515
151518202020
293032343640465050505050545454
545454546060
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
202.4227.8283.8365.3426.4487.6
6066707583879197
102106120128150168192
––––––
383838383838383838383838383838
383838383838
282828282828282828282828282828
282828282828
434548505560707575757575808080
90909090
100100
____________
116137158
180204254336400460
0.540.650.800.871.021.201.401.551.651.742.102.442.602.903.10
3.804.205.207.50
10.0014.40
222426283032343638404448566472
8090
112144168192
1F1F1F1F1F1F1F1F1F1F1F1F2F2F2F
222222
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
203.72229.18285.21366.69427.81488.92
121212151515151515151515151515
151518202020
293032343640465050505050606063
606060606060
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
202.4227.8283.8365.3426.4487.6
6066707583879197
102106120128150168192
––––––
383838383838383838383838383838
383838383838
434548505560707575757575909095
100100100100100100
____________
116137158
180204254336400460
0.690.841.001.121.321.531.801.992.272.402.803.203.604.304.80
5.105.706.809.30
11.4016.00
P22-8M-30P24-8M-30P26-8M-30P28-8M-30P30-8M-30P32-8M-30P34-8M-30P36-8M-30P38-8M-30P40-8M-30P44-8M-30P48-8M-30P56-8M-30P64-8M-30P72-8M-30
P80-8M-30P90-8M-30
P112-8M-30P144-8M-30P168-8M-30P192-8M-30
484848484848484848484848484848
484848484848
222426283032343638404448566472
8090
112144168192
1F1F1F1F1F1F1F1F1F1F1F1F3F3F3F
333333
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
203.72229.18285.21366.69427.81488.92
293032343640444650505054606767
666666667278
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
202.4227.8283.8365.3426.4487.6
6066707583879197
102106120128150168192
––––––
606060606060606060606060606060
606060606060
707070707070707070707070606060
606060606060
121215151515151515181818181818
181818202020
43454850556066707575758090
100100
110110110110120130
____________
116137158
180204254336400460
1.001.231.501.671.972.272.692.973.233.503.904.305.005.606.80
6.908.609.60
13.8016.0022.40
222426283032343638404448566472
8090
112144168192
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
203.72229.18285.21366.69427.81488.92
293032343640444650505054546767
666666667278
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
202.4227.8283.8365.3426.4487.6
6066707583879197
102106120128150168192
––––––
959595959595959595959595959595
959595959595
121212151515151515181818182020
202024242424
43454850556066707575758090
100100
110110110110120130
_____________
137158
180204254336400460
1.551.902.252.553.003.574.004.505.005.206.607.00
10.0010.4011.40
11.1012.2015.0021.5024.1030.60
1F1F1F1F1F1F1F1F1F1F1F1F1F3F3F
333333
8mm Pitch Pulleys for 85mm wide Belts. Ref. 8M85
8mm Pitch Pulleys for 50mm wide Belts. Ref. 8M50
8mm Pitch Pulleys for 30mm wide Belts. Ref. 8M30
8mm Pitch Pulleys for 20mm wide Belts. Ref. 8M20
Type 3/3FMaterial: Steel or Cast Iron
Type 1FMaterial: Steel
L
F
d MA dodp
F/L
d MA dodp NType 2/2F
Material: Steel or Cast Iron
L
F
d MA dodp N
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:51 Page 19
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
20
283032343638404864
8090
112144192
4.735.456.176.887.608.289.26
10.32
11.5013.0514.4016.9018.5020.0026.7035.0044.2052.20
CatalogueNo.
No.Teeth
ZPulleyType
PitchCircle
Dia. dp
Max.Bore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
ApproxWeight
kg
P28-14M-40P30-14M-40P32-14M-40P34-14M-40P36-14M-40P38-14M-40P40-14M-40P44-14M-40
P48-14M-40P56-14M-40P64-14M-40P72-14M-40P80-14M-40P90-14M-40
P112-14M-40P144-14M-40P168-14M-40P192-14M-40
Min.Bore
d
14mm Pitch Pulleys for 40mm Wide Belts. Ref. 14M40
14mm Pitch Pulleys for 55mm Wide Belts. Ref. 14M55
2830323436384044
485664728090
112144168192
1F1F1F1F1F1F1F1F
2F2F2F2222222
124.78133.69142.60151.52160.43169.34178.25196.08
213.90249.55285.21320.86356.51401.07499.11641.71748.66855.62
2424242424242424
24282828282828282828
6767676767808080
82828282828282828282
122.1131.0139.9148.8157.7166.6175.5193.3
211.1246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212
226256296_______
5454545454545454
54545454545454545454
6969696969696969
69696969696969696969
100100100100100120120120
135135135135135135135135135135
________
170207240278314358456600706813
P28-14M-55P30-14M-55P32-14M-55P34-14M-55P36-14M-55P38-14M-55P40-14M-55P44-14M-55
P48-14M-55P56-14M-55P64-14M-55P72-14M-55P80-14M-55P90-14M-55
P112-14M-55P144-14M-55P168-14M-55P192-14M-55
2830323436384044
485664728090
112144188192
1F1F1F1F1F1F1F1F
3F3F3F3333333
124.78133.69142.60151.52160.43169.34178.25196.08
213.90249.55285.21320.86356.51401.07499.11641.71748.66855.62
2424242424242424
24282828282828282828
6767676767808080
82828282828282828282
122.1131.0139.9148.8157.7166.6175.5193.3
211.1246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212226
256296_______
7070707070707070
70707070707070707070
8585858585858585
70707070707070707070
100100100100100120120120
135135135135135135135135135135
________
170207240278314358456600706813
5.606.607.608.609.60
10.8011.2012.50
13.7014.5015.6016.9020.0022.6029.5039.0048.5057.80
14mm Pitch Pulleys for 85mm Wide Belts. Ref. 14M85
P28-14M-85P30-14M-85P32-14M-85P34-14M-85P36-14M-85P38-14M-85P40-14M-85P44-14M-85P48-14M-85
P56-14M-85P64-14M-85P72-14M-85P80-14M-85P90-14M-85
P112-14M-85P144-14M-85P168-14M-85P192-14M-85
283032343638404448
5664728090
112144168192
1F1F1F1F1F1F1F1F1F
3F3F3333333
124.78133.69142.60151.52160.43169.34178.25196.08213.90
249.55285.21320.86356.51401.07499.11641.71748.66855.62
6767676767809090
100
9090909090909090
100
242424242432323232
323232323232323232
_________
207240278314358456600706813
7.709.10
10.5011.9013.2015.1517.1023.3025.00
25.0030.5028.8030.1033.0041.8052.4060.3070.20
122.1131.0139.9148.8157.7166.6175.5193.3211.1
246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212
226256296_______
102102102102102102102102102
102102102102102102102102102
117117117117117117117117117
102102102102102102102102102
100100100100100120135135150
150150150150150150150150165
14mm Pitch Pulleys for 115mm Wide Belts. Ref. 14M115
128138154160168184188212226256
296_______
P28-14M-115P30-14M-115P32-14M-115P34-14M-115P36-14M-115P38-14M-115P40-14M-115P44-14M-115P48-14M-115P56-14M-115
P64-14M-115P72-14M-115P80-14M-115P90-14M-115
P112-14M-115P144-14M-115P168-14M-115P192-14M-115
28303234363840444856
64728090
112144168192
1F1F1F1F1F1F1F1F1F1F
3F3333333
124.78133.69142.60151.52160.43169.34178.25196.08213.90249.55
285.21320.86356.51401.07499.11641.71748.66855.62
6767676767809094
100100
9090909090
100100100
32323232323232323232
3232323232323232
122.1131.0139.9148.8157.7166.6175.5193.3211.1246.8
282.4318.1353.7398.3496.3638.9745.9852.8
133133133133133133133133133133
133133133133133133133133
148148148148148148148148148148
133133133133133133133133
100100100100100120135140150150
150150150150150165165165
__________
240278314358456600706813
9.2011.2013.2014.8016.6018.2020.5621.9325.0027.50
30.1032.8335.5541.0054.4067.8075.8088.30
14mm Pitch Pulleys for 170mm Wide Belts. Ref. 14M170
128138154160168183188226296
–––––
1F1F1F1F1F1F1F1F3F
33333
124.78133.69142.60151.52160.43169.34178.25213.90285.21
356.51401.07499.11641.71855.62
676767678090909090
108108108108108
323232323232323232
3232323232
122.1131.0139.9148.8157.7166.6175.5211.1282.4
353.7398.3496.3638.9852.8
187187187187187187187187187
187187187187187
202202202202202202202202202
187187187187187
100100100100120135140150150
180180200220220
––––––––
240
314358456600813
14.8016.7019.4021.8525.2028.4032.2639.5054.00
69.4071.3088.00
113.00140.00
P28-14M-170P30-14M-170P32-14M-170P34-14M-170P36-14M-170P38-14M-170P40-14M-170P48-14M-170P64-14M-170
P80-14M-170P90-14M-170
P112-14M-170P144-14M-170P192-14M-170
Plain Bore Pulleys 14M Belts
Pulley TypesThe pulley types referred to intables are as drawings below.Suffix ‘F’ indicates pulley hasflanges. Pulleys below dividing line in tables are manufactured in cast iron, unflanged pulleysincorporate lightening holes indesign, except P80-14M-170.Std. Pulleys can be reworked tocustomers bore and keywayrequirements.
All dimensions in mm.Standard Pulleys can be reworked to customers bore and keyway requirements.
Type 1FMaterial: Steel
L
F
d MA dodp
Type 2/2FMaterial: Steel or Cast Iron
L
F
d MA dodp N
F/L
Type 3/3FMaterial: Cast Iron
d MA dodp N
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:51 Page 20
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
21
Taper Bore Pulleys forHTD Size 5M & 8M Belts
Pulley TypesThe pulley types referred to intables are as drawingsfollowing. Suffix ‘F’ indicatespulley has flanges. Pulleysbelow dividing lines in tablesare manufactured in Cast Iron,and pulleys over 300mmdiameter generally havelightening holes in web.
CatalogueNo.
5mm Pitch Pulleys for 15mm Wide Belt Ref. 5M15
8mm Pitch Pulleys for 20mm Wide Belt Ref. 8M20
8mm Pitch Pulleys for 30mm Wide Belt Ref. 8M30
8mm Pitch Pulleys for 50mm Wide Belt Ref. 8M50
8mm Pitch Pulleys for 85mm Wide Belt Ref. 8M85
No.Teeth
ZPulleyType
PitchCircle
Dia. dp
TaperBushRef.
Max.Bore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
ApproxWeight
kg
34-5M-1536-5M-1538-5M-1540-5M-1544-5M-1548-5M-1556-5M-1564-5M-1572-5M-1580-5M-1590-5M-15
112-5M-15136-5M-15
3436384044485664728090
112136
9F9F9F 9F9F8F 8F 8F88887
54.1157.3060.4863.6670.0376.3989.13
101.86114.59127.32143.24178.25216.45
53.056.259.462.568.975.387.9
100.7113.5126.2142.1177.1215.3
1008110811081108110812101210121016101610161020122012
25282828283232324242425050
22222222222222222222222020
22222222222525252525253232
–––––597080929292
110110
––––––––––––
199
0.230.230.290.380.480.500.660.851.251.702.253.203.60
57606670758393
106–––––
22-8M-2024-8M-2026-8M-2028-8M-2030-8M-2032-8M-2034-8M-2036-8M-2038-8M-2040-8M-2044-8M-2048-8M-2056-8M-2064-8M-2072-8M-20
222426283032343638404448566472
5F5F5F5F5F 5F5F5F 5F 5F8F8F8F
11F11F
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
110811081108110811081610161016101610161020122012201220122012
282828282842424242425050505050
282828282828282828282828282828
222222222225252525253232323232
––––––––––9396
110110110
37444550586364687276–––
137158
0.260.300.360.440.530.420.550.680.801.001.201.602.402.703.30
6066707583879197
102106120128150168192
80-8M-2090-8M-20
8090
1111
203.72229.18
202.4227.8
20122012
5050
2828
3232
110110
180204
3.503.65
––
28-8M-5030-8M-5032-8M-5034-8M-5036-8M-5038-8M-5040-8M-5044-8M-5048-8M-5056-8M-5064-8M-5072-8M-50
283032343638404448566472
13F5F 5F5F5F 5F
13F13F13F13F13F12F
71.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
70.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
121016151615161516151615201220122012251725172517
324242424242505050606060
606060606060606060606060
253838383838323232454545
–––––––––––
125
505862656872829195
116137158
0.600.650.821.061.301.601.711.782.303.405.006.70
7583879197
102106120128150168192
80-8M-5090-8M-50
112-8M-50144-8M-50168-8M-50192-8M-50
8090
112144168192
13121212
77
203.72229.18285.21366.69427.81488.92
202.4227.8283.8365.3426.4487.6
302030203020302035253525
757575759090
606060606060
515151516565
–170170170198198
180204260341402460
8.8010.0012.0015.2017.5024.00
–––– ––
34-8M-8536-8M-8538-8M-8540-8M-8544-8M-8548-8M-8556-8M-8564-8M-8572-8M-85
343638404448566472
13F13F13F13F13F13F13F13F13F
86.5891.6796.77
101.86112.05122.23142.60162.97183.35
85.290.395.4
100.5110.7120.9141.2161.6182.0
161516151615201220122517251725173020
424242505060606075
959595959595959595
383838323245454551
–––––––––
6568728291
100117137158
1.431.872.201.802.302.664.456.208.00
9197
102106120128150168192
80-8M-8590-8M-85
112-8M-85144-8M-85168-8M-85192-8M-85
8090
112144168192
131212121212
203.72229.18285.21366.69427.81488.92
202.4227.8283.8365.3426.4487.6
302030203020352535253525
757575909090
959595959595
515151656565
–170170198198198
180204260336395455
10.0010.8015.0020.0022.0026.00
–––– ––
For bore sizes of Taper Bushes for above pulleys refer to page 25. Pulleys are also available with pilotbore ref. pages 17-20. All dimensions in mm.
22-8M-3024-8M-3026-8M-3028-8M-3030-8M-3032-8M-3034-8M-3036-8M-3038-8M-3040-8M-3044-8M-3048-8M-3056-8M-3064-8M-3072-8M-30
222426283032343638404448566472
5F5F5F5F9F 9F9F9F 9F 9F
13F13F13F8F
11F
56.0261.1266.2171.3076.3981.4986.5891.6796.77
101.86112.05122.23142.60162.97183.35
54.759.864.970.175.180.285.290.395.4
100.5110.7120.9141.2161.6182.0
110811081108121016151615161516151615161520122012201225172517
282828324242424242425050506060
383838383838383838383838383838
222222253838383838383232324545
–––––––––––––
125125
37444450––––––8690
110–
158
0.320.380.450.500.550.590.770.961.151.341.331.783.764.204.30
6066707583879197
102106120128150168192
80-8M-3090-8M-30
112-8M-30144-8M-30
8090
112144
11111111
203.72229.18285.21366.69
202.4227.8283.8365.3
2517251725172517
60606060
38383838
45454545
125125125125
180204254336
4.605.006.209.00
––––
Timing Belt Catalogue_Cross + Morse 14/12/2010 14:09 Page 21
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
22
Type 11/11F
dp do
L
F
A M N
dp do
F/L
M N
dp do
L
F
A M N
do
F
L
A AN
All dimensions in mm.For 14M170 belt drives a standard range of pilot bore pulleys is available, ref page 20, alternativelytaper bore sprockets can be manufactured to order, for details of recommended dimensions contactCross & Morse Technical Department. For bore sizes of Taper Bushes refer to page 25.* Non-stock items manufactured to customer order only.
9498
108110120130138155170
208240280315360457600706813
ApproxWeight
kg
RimDiameter
N
Taper Bore Pulleys forHTD Size 14M BeltsPulley TypesThe pulley types referred to intables are as drawings following. Suffix ‘F’ indicates pulley has flanges. Pulleys below dividing lines in tables are manufactured in Cast iron, and pulleys over 350mmdiameter generally havelightening holes in web.
28-14M-8530-14M-8532-14M-8534-14M-8536-14M-8538-14M-8540-14M-8544-14M-8548-14M-85
56-14M-8564-14M-8572-14M-8580-14M-8590-14M-85
112-14M-85144-14M-85168-14M-85192-14M-85
28-14M-4030-14M-4032-14M-4034-14M-4036-14M-4038-14M-4040-14M-4044-14M-4048-14M-40
56-14M-4064-14M-4072-14M-4080-14M-4090-14M-40
112-14M-40144-14M-40168-14M-40192-14M-40
CatalogueNo.
No.Teeth
Z
PulleyType
PitchCircle
Dia. dp
Max.Bore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
TaperBushRef.
14mm Pitch Pulleys for 40mm Wide Belts. Ref. 14M40
14mm Pitch Pulleys for 55mm Wide Belts. Ref. 14M55
283032343638404448
5664728090
112144168192
13F13F13F13F13F13F13F13F13F
12F12F12121212121212
124.78133.69142.60151.52160.43169.34178.25196.08213.90
249.55285.21320.86356.51401.07499.11641.71748.66855.62
201220122012251725172517251730203020
302030203020302030203020302030203020
505050606060607575
757575757575757575
122.1131.0139.9148.8157.7166.6175.5193.3211.1
246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212226
256296–––––––
545454545454545454
545454545454545454
2.072.653.403.874.805.406.007.809.40
10.8013.4015.2016.0017.8025.6032.0044.0049.00
323232454545455151
515151515151515151
–––––––––
170170170170170170170170170
28-14M-5530-14M-5532-14M-5534-14M-5536-14M-5538-14M-5540-14M-5544-14M-5548-14M-55
56-14M-5564-14M-5572-14M-5580-14M-5590-14M-55
112-14M-55144-14M-55168-14M-55192-14M-55
283032343638404448
5664728090
112144168192
13F13F13F13F13F13F13F13F13F
12F12F12121212121212
124.78133.69142.60151.52160.43169.34178.25196.08213.90
249.55285.21320.86356.51401.07499.11641.71748.66855.62
201225172517251725172517251730203020
302030203020302030203020302030203020
506060606060607575
757575757575757575
122.1131.0139.9148.8157.7166.6175.5193.3211.1
246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212226
256296–––––––
707070707070707070
707070707070707070
324545454545455151
515151515151515151
–––––––––
170170170170170170170170170
94100108110120130138155170
208240280315360457600706813
2.202.703.604.555.206.207.008.60
10.40
12.4014.5016.2017.5020.1028.4036.2049.0053.00
14mm Pitch Pulleys for 85mm Wide Belts. Ref. 14M85
283032343638404448
5664728090
112144168192
13F13F13F13F13F13F13F13F13F
13F12F12121212121210
124.78133.69142.60151.52160.43169.34178.25196.08213.90
249.55285.21320.86356.51401.07499.11641.71748.66855.62
251725172517251730203020302030203020
352535253525352535253525352535254040
606060607575757575
9090909090909090
100
122.1131.0139.9148.8157.7166.6175.5193.3211.1
246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212226
256296–––––––
102102102102102102102102102
102102102102102102102102102
454545455151515151
6565656565656565
102
–––––––––
–190190190190190190190230
98100108110120130138153170
210240280315360457600706813
2.703.754.806.006.336.808.00
11.8015.10
19.0023.0025.0026.0027.8036.5048.0060.0086.00
14mm Pitch Pulleys for 115mm Wide Belts. Ref. 14M115
28-14M-11530-14M-11532-14M-11534-14M-11536-14M-11538-14M-11540-14M-11544-14M-11548-14M-115
56-14M-115*64-14M-115*72-14M-115
80-14M-11590-14M-115
112-14M-115144-14M-115168-14M-115192-14M-115
283032343638404448
5664728090
112144168192
13F13F13F13F13F13F13F13F13F
13F12F12121212121212
124.78133.69142.60151.52160.43169.34178.25196.08213.90
249.55285.21320.86356.51401.07499.11641.71748.66855.62
251725172517251730203020302030303030
353535353535353535353535404040404040
606060607575757575
909090909090
100100100
122.1131.0139.9148.8157.7166.6175.5193.3211.1
246.8282.4318.1353.7398.3496.3638.9745.9852.8
128138154160168184188212226
256296–––––––
133133133133133133133133133
133133133133133133133133133
454545455151517676
898989898989
102102102
–––––––––
–190190190190190230230230
98100108110125130138155170
208240280315360457600706813
3.775.006.808.008.408.709.20
14.0017.10
24.8027.0029.0032.0036.5046.0068.0082.6096.00
Type 13/13F
Type 12/12F
Type 10
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Special Belts
Cleated belts
All belts made in thermoplastic polyurethane can be fitted withcleats welded on the backside.
The cleats are welded with an high frequency vibration system,in order to obtain a perfect result without any glue.
Special belts can be manufactured in a standard or coated condition to customer’s specific requirements. Belts with punched holesand punched rectangular slots according to customer design for most packaging machines are also available.
Special moulded belts
Different kinds of coating material (foamed or vulcanisedpolyurethane, natural or synthetic rubber, silicon) available onextruded or moulded belts.
Polyurethane and rubber moulded belts with Special GreyNEOPRENE coating
Vacuum Applications
Classical moulded belt for vacuum applications which createlittle noise, available with tenax, linatex or yellow P.U. coating
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Taper Bushes
Taper bushes provide a low cost, simple, quick method ofsecuring sprocket, pulleys and couplings to a wide range ofstandard metric and imperial dimensioned shafts of generalcommercial tolerances and finish.The taper surfaces on the bush and mating hub are driventogether by high tensile screws, causing the split bush to befirmly contracted onto the shaft. The strong clamping forcewhich can be achieved enables transmission of high torquewithout the problems of fretting associated with simplekeyseated drives.The design ensures quick, easy installation of sprockets andpulleys onto shafts with simple positioning for alignment.Positive jacking-off of the bush during removal ensures quickdisassembly without normal problems of seizure between shaftand pulley. The standard bushes shown opposite are suitablefor taper bore pulleys shown on pages 35-36.
1. Remove protective coating from the bore and outside bush, and bore of hub. After ensuring the mating tapered surfaces are completely clean, insert bush in hub so thatholes line up.
2. Oil thread and point of grub screws, or thread and under head of cap screws. Place screws loosely in holes threaded in hub, shown thus in diagram.
3. Clean shaft and fit hub and bush to shaft. Locate inposition, remembering bush will nip the shaft first and then hub will be drawn on to the bush.
4. Using a hexagon wrench tighten screws gradually and alternately until all are pulled up very tightly. Use a piece of pipe on wrench to increase leverage.
5. When a key is not used, hammer against large end of bushusing a block or sleeve to prevent damage. Screws will now turn a little more. Repeat this alternate hammering and screw tightening once or twice. After drive has run under load for a short time, check tightness of screws.
6. If a key is to be fitted, do so after the bush has beentightened on to the shaft, and then fit a parallel key that is side fitting with top clearance.
7. Fill empty holes with grease to exclude dirt.
Instructions - Installation and Removal
Installation1. Slacken all screws by several turns, remove one or two
according to number of jacking off holes thus in diagram. Insert screws in jacking off holes after oiling thread and point of grub screws or thread under headof cap screws.
2. Tighten screws alternately until bush is loosened in hub and assembly is free on the shaft.
3. Remove assembly from shaft.
Removal
It is recommended that a key should be fitted with bushes in rigid and flexible couplings, timing belt and chain drives, andwherever loads of a heavy pulsating nature are encountered. All keyways are parallel keyways to British Standard 4235 Part 1 : 1972for metric dimensional shafts, or British Standard 46 Part 1 : 1958 for imperial dimensional shafts, with the exception of thosemarked* in the tables which are slightly shallower. Where a key is used it should be parallel type with side fitting and topclearance.It is not recommended to use taper bushes with maximum or minimum bore sizes on drives where high shock loads may beencountered.
Installation and Design Recommendations
Bush with 2 Grub Screws(Sizes 1008-3030)
Bush with 3 Grub Screws(Sizes 3535 and above)
24
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5050 14 127 178 3
7/8”x
21/4” B.S.W.
17
70 7580 8590 95
100 105 110115 120 125
20 4.9 23/4 3 3/41/4
22 5.4 31/4 31/27/8
5/16
25 5.4 33/4 4 1 3/8
28 6.4 41/4 41/2 43/4 11/47/16
32 7.4 5 11/45/16*
Taper BushesBush Dimensions
BushNo.
Approx.Weight
kg
Bush Dimensions
Lengthmm
o.d.large endof taper
mm No. Screw SizeKeySIzemm
Grub Screws
Metric Bore Bushes Imperial Bore Sizes
Bore sizesavailable
mm Width Depth atCentre
Bore sizesavailable
inches
KeywayInches
Width Depth atSide
Keyway mm
1008 0.11 22.2 35 2
1108 0.12 22.2 38 2
1210 0.23 25.4
1215 0.35 38.1
1610 0.35 25.4
1615 0.45 38.1
2012 0.68 31.8
2517 1.5 44.5
2525 1.9 63
3020 2.7 50.8
3030 3.6 76
3525 4.0 63
3535 5.0 89
4030 6.5 76
4040 7.7 102
4535 8 89
4545 10 114
5040 12 102
48 2
57 2
70 2
86 2
108 2
127 3
146 3
162 3
1/4”x
1/2” B.S.W.
1/4”x
1/2” B.S.W.
3/8”x
5/8” B.S.W.
7/16”x
7/8” B.S.W.
3/8”x
5/8” B.S.W.
1/2”x
1” B.S.W.
5/8”x
11/4” B.S.W.
1/2”x
11/2” B.S.W.
5/8”x
13/4” B.S.W.
3/4”x
2” B.S.W.
3
3
5
5
6
6
8
10
12
14
9 1011 12
14 1618 19 20 22
24 25
9 1011 12
14 1618 19 20 22
24 2528
11 1214 1618 19 20 2224 25 28 30
32
14 1618 19 20 2224 25 28 3032 35 38
40 42(1615 only) 42
14 15 1618 19 20 2224 25 28 3032 35 38
40 4245 48 50
19 20 2224 25 28 3032 35 38
40 4245 48 50
5560 65†
25 28 3032 35 38
40 4245 48 50
5560 6570 75
32 35 3840 42
45 48 5055
60 6570 7580 85
90
40 4245 48 50
5560 6570 7580 8590 95
100
5560 6570 7580 8590 95
100 105 110
3 1.4 3/81/2
1/81/16
4 1.8 5/83/4
3/163/32
5 2.3 7/81/4
1/8
6 2.8 1 1/41/16*
8 1.3**
3 1.4 3/81/2
1/81/16
4 1.8 5/83/4
3/163/32
5 2.3 7/8 1 1/41/8
6 2.8 11/85/16
5/64*8 3.38 1.3**
4 1.8 1/21/8
1/16
5 2.3 5/83/4
3/163/32
6 2.8 7/8 1 1/41/8
8 3.3 11/8 11/45/16
1/8
10 3.3
5 2.3 1/21/8
1/16
6 2.8 5/83/4
3/163/32
8 3.3 7/8 1 1/41/8
10 3.3 11/8 11/45/16
1/8
12 3.3 13/8 11/23/8
1/8
12 1.3** 15/87/16
1/8*
5 2.3 3/43/16
3/32
6 2.8 7/8 1 1/41/8
8 3.3 11/8 11/45/16
1/8
10 3.3 13/8 11/23/8
1/8
12 3.3 15/8 13/47/16
5/32
14 3.8 17/8 2 1/25/32
6 2.8 7/8 1 1/41/8
8 3.3 11/8 11/45/16
1/8
10 3.3 13/8 11/23/8
1/8
12 3.8 15/8 13/47/16
5/32
14 3.8 17/8 2 1/25/32
16 4.3 21/45/8
7/32
18 4.4 23/8 21/25/8
3/16
8 3.3 11/45/16
1/8
10 3.3 13/8 11/23/8
1/8
12 3.3 15/8 13/47/16
5/32
14 3.8 17/8 2 1/25/32
16 4.3 21/4 23/8 21/25/8
7/32
18 4.4 25/8 23/4 3 3/41/4
20 4.9
10 3.3 11/23/8
1/8
12 3.3 15/8 13/47/16
5/32
14 3.8 2 1/25/32
16 4.3 21/4 23/8 21/25/8
7/32
18 4.4 23/4 3 3/41/4
20 4.9 31/4 33/87/8
5/16
22 5.4 31/27/8
1/4*25 5.412 3.3 13/4
7/165/32
14 3.8 2 1/25/32
16 4.3 21/4 23/8 21/25/8
7/32
18 4.4 23/4 3 3/41/4
20 4.9 31/4 31/27/8
5/16
22 5.4 33/4 4 1 1/4*25 5.428 6.416 4.3 21/4 23/8 21/2
5/87/32
18 4.4 23/4 3 3/41/4
20 4.9 31/4 31/27/8
5/16
22 5.4 33/4 4 1 3/8
25 5.4 41/4 41/2 11/41/4*
28 6.4
†Bore size 65mm has keyway 2.3mm deep on 2525 Bush * Shallow Key not to B.S. 46 Part 1.**Shallow Key not to B.S. 4235 Part 1.
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Minimum numberof teeth on pulley Z min
Minimum Diameterof outside idler di
Polyurethanecase
Steel Tension Members
Special ToothForm
Green Belt Linear Drives
Green Power Polyurethane Metric BeltsThe Green Power Polyurethane Timing Belt offers a highlyefficient, high strength system for the transmission oflinear power in transfer systems.Utilising the RPP tooth form the belts can be usedwith standard pulleys to metric pitches 5mm (5M), 8mm(8M) and 14mm(4M) with standard width belts able to handle loads up to 3,700kg with speeds up to 80m/sec.The body of the belt is Polyurethane with a hardness of 85 Shore A to provide good tooth strength to resist thehigh shock and surge loads encountered in reciprocatingdrives. High strength steel tension members provide highbreaking strength combined with low elasticity.The teeth are faced with a green nylon fabric which increases tooth strength; reduces the coefficient of frictionbetween belt and pulley, improving meshing with the pulley and reducing noise levels. The nylon has good wearproperties and ensures a clean drive media.Extensive development has resulted in a homogeneouscombination of all components, the cohesive bond imparting superior load carrying capacity giving the GreenPower Belts the ability to exceed the performance of otherbelts already in the market place.The parabolic profile of the Standard Green Power Belts hasa contact angle which increases from the base of the toothto the top, permitting an increased tooth profile comparedto other metric belts. The parabolic shape and tooth depthprovide the following advantages:-
l Reduced interference between belt and pulley improving meshing characteristics.
l Reduced noise levels.l Increased resistance to tooth jumping.l Increased shear strength.l Increased torque capacity.l Reduced installation tension. l Controlled deformation of the softer top section of the
tooth.
The belts are manufactured in a continuous process withthe steel tensile member parallel to belt edge. The openended belts are available in 50-100 metre rolls, but can besupplied in other lengths to request.
Belt Size
U5MU8M
HPU8MU14M
Pitchmm
Tooth LengthA
mm
Tooth HeightB
mm
Belt Thick.C
mm
Tol. Thickness
mm
Min.NumberPulley Teeth
Z min
Min.DiameterOutside Idler
di mm588
14
3.355.505.509.50
23.23.2
6
3.85.45.410
+_ 0.200.300.300.40
+_+_+_
12182232
60100150250
Green Power Belt Dimensions
Standard Green Power Belt DimensionsCat. No Width
mmWidth Tol.
mmWorking Load
Fm Max. NBreaking Load
NElasticity
mm/m/1000NWeightkg/m
U5M10EU5M15EU5M25EU5M30EU5M50E
U8M10EU8M15EU8M20EU8M30EU8M50EU8M85E
U8M100E
HPU8M10EHPU8M20EHPU8M30EHPU8M50EHPU8M85E
HPU8M100E
U14M40EU14M55EU14M85E
U14M115E
PitchP
mm
55555
8888888
888888
14141414
1015253050
101520305085
100
1020305085
100
405585
115
1015253050
101520305085
100
1020305085
100
405585
115
0.50.50.50.50.5
0.50.50.50.50.50.50.5
0.50.50.50.50.50.5
1.01.01.01.0
+_+_+_+_
+_+_+_+_+_+_+_
+_+_+_+_+_
+_+_+_+_+_+_
+_+_+_+_
8751330170023754750
14602190302044807100
1265015800
2000365059709370
1696019850
12300167502850036500
2680402072308050
15000
54608190
1092017290309405360063995
82501815026400462007755090750
4920067650
104550144525
4.503.001.651.450.83
2.501.951.350.850.550.320.24
2.001.050.670.430.240.21
0.320.240.140.11
0.03910.05860.09770.11720.1953
0.06570.09850.13130.19700.32830.55800.6565
0.07070.14170.21220.35280.60220.7085
0.47100.64701.00001.3553
A
Pitch p
B C
Mechanical Features ofGreen Power Linear Beltsl Dimensional consistancy.l Low pre-tension requirement.l Low noise levels.l High abrasion resistance.l No maintenance.l High flexibility. l Linear speeds up to 80m/secl High positional accuracy
Chemical Features of Green Power Linear Beltsl Working temperatures -30°C to +85°C and up to
+110°C for short periods.l High resistance to Oils and Greases.l Moderate resistance to Acids and Alkaline solutions.l Resistant to Ozone, UVA rays, Hydrolisis and Ageing.l Non flaking, non- toxic, suitable for food and clean
room applicatons.l The PU body is suitable for joining with other
thermoplastic materials.
Endless BeltsEndless Belts can be produced by welding open endedlengths, a multi-finger connection being used to minimisestrength loss.Also a limited range of endless manufactured bolts is available from 1.9 metre length for power transmission applications. These can be provided backed with Linatex,Tenax and softer PU compounds.
ZZ
26
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A Green Belt used for linear application can be selected either by consideration of the loads and accelerativeforces applied to the belt, or by the power applied to the driving pulley and the speed of rotation.
Green Belt Selection Procedure
For vertical drivesCorrected value Fp = (M+ MB + Mc) a + 9.807M + FF...NIf significantly changed recheck belt width - section 6.The belt can then be specified by type - width x length e.g.
U5M 2OE x 1500 - 1500mm length belt
Terms and Definitions :-a = acceleration m/secA = centre distance pulley shafts mmb = belt width cmd = bore of pulley mmdo = outside diameter of pulley mmdp = pitch diameter of pulley mmF = total force seen by belt NFF = friction forces seen by belt NFm = max. acceptable force for belt (table p23) NFp = linear driving force NFs = tooth shear resistance (see table below) N/cmFT = total force seen by belt NFx = fitting tension for belt (see p25) NL = length of belt mmLc = length of moving carriage mmLm= distance moved by carriage mmmB = unit weight of belt ( table p23) gm/mM = weight of moving components (carriage) kgMB = weight of belt length
= mB x L kgMc = compensated weight for pulley
= Mp 1+ d2
2 do2
Mp= weight of idler pulley kgN = shaft speed r.p.mp = belt pitch mmP = drive power KWV = belt/carriage linear speed m/secZ = number of teeth on pulleyZm= number of teeth in mesh with belt =12 max
(
In order to select the Green Belt it is first necessary to compiletogether, dependant on method of selection, the following relevant design parameters.
a) Is drive horizontal or verticalb) The mass of all moving parts to be moved by the belt.c) Maximum Belt velocityd) Maximum rate of acceleratione) Frictional forces due to load being movedf) Desired Pulley, diametersg) Pulley Centres/Total length of movement required h) Driving Motor Poweri) Driving Pulley speed (r.p.m.)j) Any width constrictions
Selection of Belt Considering Motor Power1) Use Power and Pulley speed to select size (pitch) of belt
from graph 1 opposite. 2) Considering the desired pulley diameter determine number
of teeth in pulley No. Teeth Z = dp x`
p 3) From Tooth Shear Resistance table against Pulley Speed
‘N’ determine value for Fs for selected belt size.4) Determine numbers of pulley teeth in mesh Zm, normally
equals z/2, Zm has a maximum Value of 125) Then Belt Width b = P x 12 x 106 mm
Fs x Zm x Z x NSelect next larger standard width to width calculated
6) Belt length L = 2A + Zxp mmWhere centre distance not specified but carriage motiondistance is, the min. pulley centre can be determined as:-
Amin = Lm + Lc + dp. mmThe belt can then be specified by type - width x length e.g.
U8M 50E X 2600 - 2600mm length belt.
Selection of Belt considering loads and accelerative forces1) Calculate the linear drive force Fp
For Horizontal drives Fp = M x a + FF NFor Vertical drives Fp = M (9.807+a)+ FF NFrom table below select size of belt for the application
2) Considering the desired pulley diameter determine numberof teeth in pulley
3) Determine Pulley speed, r.p.m. from linear speed of belt V.N = 60V x1000 r.p.m
Zxp4) From Tooth Shear Resistance table against Pulley Speed ‘N’,
determine value for Fs for selected belt size.5) Determine number of pulley teeth in mesh Zm, normally
equals Z/2. Zm has a maximum value of 12.6) Then belt width b = Fp mm
Fs x ZmSelect next larger standard width to width calculated.
7) Belt Length L = 2A + Zxp mmWhere Centre distance not specified but carriage motion distance is, the min. pulley centre distance can be determined as:-A min. = Lm + Lc +dp mm
8) Having determined a belt size and length the calculationfor linear drive force can be recalculated incorporating thebelt weight and idler pulley (the drive pulley inertia doesnot effect the belt forces, for horizontal drives.)Corrected value Fp = (M + MB + Mc) a + FF... N
0 - 920 500 - 3650500 - 3800
1000 - 9000
Drive Load RangeNSize of Belt Max Rate acceleration
m/sec2
U5MU8M
HPU8MU14M
80606040
No. Teeth Z = dp x `p
Value for Teeth Shear Resistance Fs N/cm by belt sizePulley SpeedN r.p.m U5M
020406080
100200300400500600700800900
10001100120013001400150016001700180020002200240026002800300032003400360038004000450050005500600065007000750080009000
10000
U8M HPU8M UI4M
Tooth Shear Resistance
(36.7036.3636.0235.6835.3435.0032.8531.5030.4529.5528.5827.7827.1026.5226.0025.5425.1324.7524.4024.0823.7823.5023.2422.7522.3121.9121.5421.1920.8620.5420.2419.9619.6819.4118.7618.1417.5316.9416.3415.7515.1514.5413.2811.97
75.7174.7273.7372.7471.7570.7665.1062.0059.7557.3555.5053.6452.0850.7349.5448.5047.5646.7045.9245.2044.5343.9043.3142.2441.2740.4039.5838.8338.1237.4436.8036.1935.6235.0433.6832.3931.1529.9328.7427.5326.3325.1122.6220.04
75.7174.7273.7372.7471.7570.7665.1062.0059.7557.3555.5053.6452.0750.7249.5448.4947.5446.6945.9045.1844.5143.8843.2942.2141.2440.3539.5338.7738.0537.3736.7236.0935.5034.9133.5232.2030.9229.6628.4127.1525.8924.6222.0019.27
139.65137.37135.03132.81130.53128.24118.00111.00105.00100.51
96.0492.3989.3186.6484.2882.1780.2578.4976.8675.3473.9072.5471.2568.8166.5464.3862.3060.2958.3256.3854.4652.5450.6248.6943.8138.7733.5328.0722.34_
____
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U14M
U5M
U8M & HPU 8M
B) Carriage to be moved vertically by belt on 2500 mm pulley centres, Weight of carriage 100kg moves max velocity 3m/sec with max acceleration 10m/sec2 , Frictional loss 50N with pulleys to be approx 75 mm diameter.
1) Calculate driving force Fp = M(9.807+ a) + FF N
= 100(9.807+10) + 50 = 2030.7NFrom table p23 belt size should be U8M
2) Calc No. Teeth Pulley Z = dp x ` = 75`=29.45 a 30 teethp 8
For 30 tooth pulley actual dp = 76.4 mm3) Determine pulley speed N = 60 V .1000 = 750 r.p.m
Z x p4) From Tooth Sheer Resistance table, p24, determine value Fs
@ 800 r.p.m = 52.085) Determine teeth in mesh Zm = z/2 = 30/2 = 15 but 12 is max6) Determine belt width b = Fp = 2030.7 = 3.25 cm
Fs x Zm 52.08 x 12 Next larger standard width is 50 mm
7) Belt length L = 2A + Z x p mm = 5240 mm8) Check corrected value for Fp including belt weight
Corrected Fp = (M + MB + Mc) a + 9.807M + FF N= (100 + 1.85 + 1.15) 10 + 9.807 x 100 + 50 N= 1030 + 981 + 50 = 2061 N
Change to original figure minimal so belt selection stands.Thus belt specification is U8M50E x 5240
Belt Selection examplesA) Belt required to drive oscillating table powered by 0.2kw motor
gearbox driving pulley at 270 r.p.m. The belt is required to havepulley centres 2000mm and pulley diameters approx 25mm.
1) By consideration of the Power and Speed values in table abovewe will select a U5M belt.
2) Considering the pulley diameter (25mm) we can determineNo.Teeth Z = dp x ` = 25` = 15.7 a 16 Teeth
p 5
For 16 tooth pulley actual dp = 25.46mm.3) From Tooth Shear Resistance table, p24, determine value Fs for
pulley speed (use table values next above).@ 300r.p.m Fs = 31.50
4) Determine no teeth in mesh. As this is a conveyor with equalpulleys :- Zm = z/2 = 8
5) Belt width is from equation b = p x 12 x 106
Fs x Zm x Z x N= 0.2 x 12 x 10
31.50 x 8 x 16 x 270= 2.2 cm
next largest belt standard width = 25 mm6) Belt length L = 2A + Z x p mm
= 4080 mmThus belt specification is U5M25Ex 4080
6
Belt TensioningThe belt tension is determined by the value of the driving force Fp. The fitting tension Fx must ensure that both strands of thebelt run without sagging, as otherwise the accuracy of transmission and belt life would be compromised. Thus the fittingtension should always exceed the maximum driving force, and isapplied to both strands of the belt.
F x FpThus in example B where Fp max is 2061N a sensible belt tension could be 2,500 N.Determining the fitting tension is simple, in that the centre distance of the pulleys is increased to a level equal to the elasticstretch of the belt under this load. Values for elasticity of belts isprovided in Std Belt Dimensions table. (Page 26)
Thus for our example B to get a tension of 2,500N we must extend the belt by 215 x 0.55 = 1.375 mm/m.As the existing centres are 2500 mm the total extension will be2.5 x 1.375 = 3.44 mm.Under working conditions the total load seen by either strand of the belt equals the fitting tension + working load.
Total Load FT = Fp + Fx NFor our example FT = 2061 + 2500 = 4561N
It is imperative this load does not exceed the maximum working load FM max shown in table bottom of page 26
FM FT For U8M50E belt FM = 7100N so selection in example is o.k.,otherwise a wider belt would have been required.
Shaft Speed RPM min -1
Des
ign
pow
er k
w
Green Belt Selection and Application
0.01
Green Belt Selection Table
1
10
100
1000
0.1
10,0001,000100101
28
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The belts are standard construction stock length and width sizes. Other pitches, widths, and special constructions can be supplied to order. Special Constructions include: Ground-back Belts, Static Conductive, Oil Resistant, High Temperature Resistant andDouble Sided Construction. For further details contact Cross & Morse Technical Department.
3/8‚‚ Wide Belt
Classical Series Timing Belts
Classical Series Timing Belts are manufactured in 5 pitch sizes,XL (1/5), L (3/8”), H (1/2”), XH (7/8”) and XXH (11/4”). Standard stocklengths and widths are shown below, the XH and XXH Seriesbeing available to order. Although in many designs ClassicalBelts have been replaced by the new Parabolic Belts they arestill preffered on some drives due to lower cost, larger selectionstock belts and pulleys and their suitability for low torque highspeed applications.
Standard Stock Timing Belt SizesXL Series - 1/5
” Pitch
Timing Belt ConstructionThe classical timing belt consists of four components.Cable Tension Member: A continuous helically wound glass fibrecable is the load carrying element at the heart of the belt. Thistension member provides the belt with enormous tensilestrength with a high level of flexibility.Polychloroprene Backing: A thin, strong, wear resistant polychloroprene rubber sleeve is bonded to the tension cable toprovide a flexible protection. Polychloroprene Teeth: Moulded integral with thepolychloroprene backing, made of moderately hard, shearresistant rubber compound, the teeth are accurately formed and preciselyspaced pulley engagement.Nylon Facing: A tough, wear resistant nylon duck, with lowcoefficient of friction, protects the wearing surface of the teethin the same manner as case hardening protects the surface ofsteel.
Special Construction BeltsBelts for special applications can be produced to order in minimum batch sizes.Anti- Static Belts: Belts conforming to BS 2050 Standard can be provided on all standard belt sizes. These belts are for applications where static discharges must be avoided, such aschemical plants, mines and oil refineries. High Temperature Belts: For applications in confined areas with elevated temperatures, these belts can operate at up to 120˚C.Oil Resistance Belts: For areas where belts could be subject to frequent contact with lubricating oils.
Belts with a combination of these features can also be offered.
Ground Back Belts: All belts supplied by Cross and Morse haveground backs and uniform tension member to ensure smooth running. For very sensitive drives the belt thickness tolerance can be tightened from the standard ± 0.6mm to ± 0.25mm (Class 2) or even ± 0.15mm (Class 1). These belts provide improved accuracy of drive on positioning applications.Other Pitch and Widths of Belts: Belts can also be provided in2mm pitch MXL, 7/8 inch pitch XH and 11/4 inch pitch XXH, for replacement purposes. Widths up to mould turn (approx 400mm) can be supplied.
Belt LengthCode
54XL60XL70XL80XL90XL98XL
100XL102XL106XL110XL120XL130XL140XL150XL156XL160XL170XL180XL182XL190XL198XL200XL202XL210XL212XL214XL
PitchLength
mm
No.Teeth
N
1/4‚‚ Wide Belt
Cat. No Wt.gms Cat. No Wt.gms
137.16152.40177.80203.20228.60248.92254.00259.08269.24279.40304.80330.20355.60381.00396.24406.40431.80457.20462.28482.60502.92508.00513.08533.40538.48543.56
273035404549505153556065707578808590919599
100101105106107
54XL 02560XL 02570XL 02580XL 02590XL 02598XL 025
100XL 025102XL 025106XL 025110XL 025120XL 025130XL 025140XL 025150XL 025156XL 025160XL 025170XL 025180XL 025182XL 025190XL 025198XL 025200XL 025202XL 025210XL 025212XL 025214XL 025
2.02.32.62.93.33.63.73.73.94.04.44.85.15.55.75.96.26.66.77.07.37.37.47.77.87.9
54XL 03760XL 03770XL 03780XL 03790XL 03798XL 037
100XL 037102XL 037106XL 037110XL 037120XL 037130XL 037140XL 037150XL 037156XL 037160XL 037170XL 037180XL 037182XL 037190XL 037198XL 037200XL 037202XL 037210XL 037212XL 037214XL 037
2.93.33.84.44.95.35.55.65.86.06.57.07.68.28.58.79.39.8
10.010.410.911.011.111.511.711.8
TensionMember
Nylon Facing
Polychloroprene Teeth
Polychloroprene Backing
3/8‚‚ Wide BeltBelt
LengthCode
220XL228XL230XL234XL240XL250XL260XL270XL276XL290XL310XL316XL320XL330XL344XL352XL364XL380XL384XL390XL392XL434XL530XL600XL710XL
PitchLength
mm
No.Teeth
N
1/4‚‚ Wide Belt
Cat. No Wt.gms Cat. No Wt.gms
558.80579.12584.20594.36609.60635.00660.40685.80701.04736.60787.40802.64812.80838.20873.76894.08924.56965.20975.36990.60995.68
1102.361346.201524.001803.40
110114115117120125130135138145155158160165172176182190192195196217265300355
220XL 025228XL 025230XL 025234XL 025240XL 025250XL 025260XL 025270XL 025276XL 025290XL 025310XL 025316XL 025320XL 025330XL 025334XL 025352XL 025364XL 025380XL 025384XL 025390XL 025392XL 025434XL 025530XL 025600XL 025710XL 025
8.18.48.48.68.89.29.59.9
10.110.611.411.611.712.112.612.913.313.914.114.314.415.919.422.026.0
220XL 037228XL 037230XL 037234XL 037240XL 037250XL 037260XL 037270XL 037276XL 037290XL 037310XL 037316XL 037320XL 037330XL 037344XL 037352XL 037364XL 037380XL 037384XL 037390XL 037392XL 037434XL 037530XL 037600XL 037710XL 037
12.112.512.612.913.213.714.314.815.215.917.117.417.618.118.919.420.020.921.121.421.623.929.133.039.1
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Classical Series Timing Belts
L Series - 3/8” PitchBelt
LengthCode
PitchLength
mm
No.Teeth
N
1/2” Wide Belt 3/4” Wide Belt 1” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms.
124L135L150L173L187L202L210L225L240L255L270L285L300L322L345L367L390L405L412L420L450L480L510L540L600L728L817L
240H270H300H330H360H390H420H450H480H510H540H570H600H630H660H700H725H750H800H850H900H
1000H1100H1120H1140H1150H1250H1400H1700H
240H 075 270H 075 300H 075330H 075360H 075390H 075420H 075450H 075480H 075510H 075540H 075570H 075600H 075630H 075660H 075700H 075725H 075750H 075800H 075850H 075900H 075
1000H 0751100H 0751120H 0751140H 0751150H 0751250H 0751400H 0751700H 075
609.60685.80762.00838.20914.40990.60
1066.801143.001219.201295.401371.601447.801524.001600.201676.401778.001841.501905.002032.002159.002286.002540.002794.002844.802895.602921.003175.003556.004318.00
485460667278849096
102108114120126132140145150160170180200220224228230250280340
.052
.058
.065
.071
.078
.084
.091
.097
.104
.110
.116
.122
.129
.135
.142
.151
.156
.161
.172
.183
.194
.215
.237
.241
.246
.248
.269
.301
.366
240H 100270H 100300H 100330H 100360H 100390H 100420H 100450H 100480H 100510H 100540H 100570H 100600H 100630H 100660H 100700H 100725H 100750H 100800H 100850H 100900H 100
1000H 1001100H 1001120H 1001140H 1001150H 1001250H 1001400H 1001700H 100
.069
.077
.088
.096
.104
.114
.120
.129
.138
.146
.155
.163
.171
.180
.189
.200
.208
.215
.229
.243
.258
.286
.315
.321
.326
.329
.358
.401
.487
240H 150270H 150300H 150330H 150360H 150390H 150420H 150450H 150480H 150510H 150540H 150570H 150600H 150630H 150660H 150700H 150725H 150750H 150800H 150850H 150900H 150
1000H 1501100H 1501120H 1501140H 1501150H 1501250H 1501400H 1501700H 150
.103
.116
.131
.142
.155
.167
.180
.193
.206
.219
.232
.245
.258
.270
.284
.301
.311
.322
.343
.365
.386
.429
.472
.481
.489
.493
.537
.601
.730
240H 200270H 200300H 200330H 200360H 200390H 200420H 200450H 200480H 200510H 200540H 200570H 200600H 200630H 200660H 200700H 200725H 200750H 200800H 200850H 200900H 200
1000H 2001100H 2001120H 2001140H 2001150H 2001250H 2001400H 2001700H 200
.137
.154
.175
.193
.207
.228
.240
.258
.275
.292
.309
.326
.343
.360
.378
.400
.415
.430
.458
.487
.515
.572
.630
.641
.653
.659
.716
.801
.973
240H 300270H 300300H 300330H 300360H 300390H 300420H 300450H 300480H 300510H 300540H 300570H 300600H 300630H 300660H 300700H 300725H 300750H 300800H 300850H 300900H 300
1000H 3001100H 3001120H 3001140H 3001150H 3001250H 3001400H 3001700H 300
.206
.231
.263
.289
.311
.341
.360
.386
.412
.438
.464
.489
.515
.540
.567
.601
.623
.644
.687
.730
.773
.859
.944
.961
.978
.9871.0731.2011.460
124 L050135 L050150 L050173 L050187 L050202 L050210 L050225 L050240 L050255 L050270 L050285 L050300 L050322 L050345 L050367 L050390 L050405 L050412 L050420 L050450 L050480 L050510 L050540 L050600 L050728 L050817 L050
124 L075135 L075150 L075173 L075187 L075202 L075210 L075225 L075240 L075255 L075270 L075285 L075300 L075322 L075345 L075367 L075390 L075405 L075412 L075420 L075450 L075480 L075510 L075540 L075600 L075728 L075817 L075
124L 100135L 100150L 100173L 100187L 100202L 100210L 100225L 100240L 100255L 100270L 100285L 100300L 100322L 100345L 100367L 100390L 100405L 100412L 100420L 100450L 100480L 100510L 100540L 100600L 100728L 100817L 100
314.33342.90381.00438.15476.25514.35533.40571.50609.60647.70685.80723.90762.00819.15876.30932.18990.60
1028.701047.751066.801143.001219.201295.401371.601524.001847.852076.45
33364046505456606468727680869298
104108110112120128136144160194218
.015
.017
.019
.020
.022
.023
.025
.026
.028
.030
.032
.034
.035
.038
.040
.043
.046
.047
.048
.049
.054
.058
.062
.065
.070
.085
.095
BeltLengthCode
Pitch Lengthmm
No.Teeth
N
1/2” Wide Belt 11/2” Wide Belt1” Wide Belt 2” Wide Belt 3” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms.
.023
.023
.026
.030
.034
.035
.038
.039
.042
.045
.047
.049
.053
.056
.060
.063
.068
.071
.072
.074
.078
.083
.089
.093
.105
.128
.142
.031
.034
.038
.039
.044
.046
.051
.052
.056
.060
.063
.068
.070
.075
.081
.085
.091
.095
.096
.098
.105
.116
.120
.130
.139
.170
.190
Standard Stock Timing Belt Sizes
The belts are standard construction stock length and width sizes. Other pitches, widths, and special constructions can be suppliedto order. Special Constructions include: Ground-back Belts, Static Conductive, Oil Resistant, High Temperature Resistant. For further details contact Cross & Morse Technical Department. Standard Belts to XH and XXH formats can be supplied on short delivery time.
Open Ended Classical Series BeltsOpen ended classical belts are available all sizes of classical belts for application on reciprocating drives, etc. All belts operate onstandard pulleys and can be secured by clamping plates (page 45).
Cat. No Belt Type Pitch mm Width mm No. Teeth/Metre Wt/Metre gms Std. Length
XL025EXL031EXL037EL050EL075EL100EH050EH075EH100E
XL025XL031XL037L050L075L100H050H075H100
5.085.085.089.539.539.53
12.7012.7012.70
6.47.99.5
12.719.125.412.719.125.4
196.8196.8196.8105.0105.0105.078.778.778.7
14.418.021.645.768.491.556.584.8
113.0
110m90m70m90m70m50m70m70m70m
H Series - 1/2” Pitch
30
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Classical Series Timing Belts
Double Sided Classical Belts Construction of these belts same as standard Classical Belts, but with teeth on both sides of the belt. Both faces of belt have nylonfacing for wear resistance. These belts enable driving of pulleys by both sides of belt.
XL Series Double Sided Belts - 1/5” Pitch
L Series Double Sided Belts - 3/8” Pitch
H Series Double Sided Belts - 1/2” Pitch
BeltLengthCode
PitchLength
mm
No.Teeth
N
1/4” Wide Belt 3/8” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms.
BeltLengthCode
PitchLength
mm
No.Teeth
N
1/2” Wide Belt 3/4” Wide Belt 1” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms.
120XL130XL140XL150XL156XL160XL170XL180XL182XL190XL198XL200XL202XL210XL212XL214XL220XL228XL230XL234XL
304.80330.20355.60381.00396.24406.40431.80457.20462.28482.60502.92508.00513.08533.40538.48543.56558.80579.12584.20594.36
6065707578808590919599
100101105106107110114115117
124L135L150L173L187L202L210L225L240L255L270L285L300L322L345L367L390L405L412L420L450L480L510L540L600L728L817L
240H270H300H330H360H390H420H450H480H510H540H570H600H630H660H700H725H750H800H850H900H
1000H1100H1120H1140H1150H1250H1400H1700H
240H075DD270H075DD300H075DD330H075DD360H075DD390H075DD420H075DD450H075DD480H075DD510H075DD540H075DD570H075DD600H075DD630H075DD660H075DD700H075DD725H075DD750H075DD800H075DD850H075DD900H075DD
1000H075DD1100H075DD1120H075DD1140H075DD1150H075DD1250H075DD1400H075DD1700H075DD
609.60685.80762.00838.20914.40990.60
1066.801143.001219.201295.401371.601447.801524.001600.201676.401778.001841.501905.002032.002159.002286.002540.002794.002844.802895.602921.003175.003556.004318.00
485460667278849096
102108114120126132140145150160170180200220224228230250280340
.052
.058
.065
.071
.078
.084
.091
.097
.104
.110
.116
.122
.129
.135
.142
.151
.156
.161
.172
.183
.194
.215
.237
.241
.246
.248
.269
.301
.366
240H100DD270H100DD300H100DD330H100DD360H100DD390H100DD420H100DD450H100DD480H100DD510H100DD540H100DD570H100DD600H100DD630H100DD660H100DD700H100DD725H100DD750H100DD800H100DD850H100DD900H100DD
1000H100DD1100H100DD1120H100DD1140H100DD1150H100DD1250H100DD1400H100DD1700H100DD
.069
.077
.088
.096
.104
.114
.120
.129
.138
.146
.155
.163
.171
.180
.189
.200
.208
.215
.229
.243
.258
.286
.315
.321
.326
.329
.358
.401
.487
240H150DD270H150DD300H150DD330H150DD360H150DD390H150DD420H150DD450H150DD480H150DD510H150DD540H150DD570H150DD600H150DD630H150DD660H150DD700H150DD725H150DD750H150DD800H150DD850H150DD900H150DD
1000H150DD1100H150DD1120H150DD1140H150DD1150H150DD1250H150DD1400H150DD1700H150DD
.103
.116
.131
.142
.155
.167
.180
.193
.206
.219
.232
.245
.258
.270
.284
.301
.311
.322
.343
.365
.386
.429
.472
.481
.489
.493
.537
.601
.730
240H200DD270H200DD300H200DD330H200DD360H200DD390H200DD420H200DD450H200DD480H200DD510H200DD540H200DD570H200DD600H200DD630H200DD660H200DD700H200DD725H200DD750H200DD800H200DD850H200DD900H200DD
1000H200DD1100H200DD1120H200DD1140H200DD1150H200DD1250H200DD1400H200DD1700H200DD
.137
.154
.175
.193
.207
.228
.240
.258
.275
.292
.309
.326
.343
.360
.378
.400
.415
.430
.458
.487
.515
.572
.630
.641
.653
.659
.716
.801
.973
240H300DD270H300DD300H300DD330H300DD360H300DD390H300DD420H300DD450H300DD480H300DD510H300DD540H300DD570H300DD600H300DD630H300DD660H300DD700H300DD725H300DD750H300DD800H300DD850H300DD900H300DD
1000H300DD1100H300DD1120H300DD1140H300DD1150H300DD1250H300DD1400H300DD1700H300DD
.206
.231
.263
.289
.311
.341
.360
.386
.412
.438
.464
.489
.515
.540
.567
.601
.623
.644
.687
.730
.773
.859
.944
.961
.978
.9871.0731.2011.460
124L050DD135L050DD150L050DD173L050DD187L050DD202L050DD210L050DD225L050DD240L050DD255L050DD270L050DD285L050DD300L050DD322L050DD345L050DD367L050DD390L050DD405L050DD412L050DD420L050DD450L050DD480L050DD510L050DD540L050DD600L050DD728L050DD817L050DD
124L075DD135L075DD150L075DD173L075DD187L075DD202L075DD210L075DD225L075DD240L075DD255L075DD270L075DD285L075DD300L075DD322L075DD345L075DD367L075DD390L075DD405L075DD412L075DD420L075DD450L075DD480L075DD510L075DD540L075DD600L075DD728L075DD817L075DD
124L100DD135L100DD150L100DD173L100DD187L100DD202L100DD210L100DD225L100DD240L100DD255L100DD270L100DD285L100DD300L100DD322L100DD345L100DD367L100DD390L100DD405L100DD412L100DD420L100DD450L100DD480L100DD510L100DD540L100DD600L100DD728L100DD817L100DD
314.33342.90381.00438.15476.25514.35533.40571.50609.60647.70685.80723.90762.00819.15876.30932.18990.60
1028.701047.751066.801143.001219.201295.401371.601524.001847.852076.45
33364046505456606468727680869298
104108110112120128136144160194218
.015
.017
.019
.020
.022
.023
.025
.026
.028
.030
.032
.034
.035
.038
.040
.043
.046
.047
.048
.049
.054
.058
.062
.065
.070
.085
.095
BeltLengthCode
Pitch Lengthmm
No.Teeth
N
1/2” Wide Belt 11/2” Wide Belt1” Wide Belt 2” Wide Belt 3” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms. Cat. No. Wt. gms.
.022
.024
.026
.030
.034
.035
.038
.039
.042
.045
.047
.049
.053
.056
.060
.063
.068
.071
.072
.074
.078
.083
.089
.093
.105
.128
.142
.031
.034
.038
.039
.044
.046
.051
.052
.056
.060
.063
.068
.070
.075
.081
.085
.091
.095
.096
.098
.105
.116
.120
.130
.139
.170
.190
4.44.85.15.55.75.96.26.66.77.07.37.37.47.77.87.98.18.48.48.6
6.57.07.68.28.58.79.39.8
10.010.410.911.011.111.511.711.812.112.512.612.9
120XL025DD130XL025DD140XL025DD150XL025DD156XL025DD160XL025DD170XL025DD180XL025DD182XL025DD190XL025DD198XL025DD200XL025DD202XL025DD210XL025DD212XL025DD214XL025DD220XL025DD228XL025DD230XL025DD234XL025DD
120XL025DD130XL037DD140XL037DD150XL037DD156XL037DD160XL037DD170XL037DD180XL037DD182XL037DD190XL037DD198XL037DD200XL037DD202XL037DD210XL037DD212XL037DD214XL037DD220XL037DD228XL037DD230XL037DD234XL037DD
BeltLengthCode
PitchLength
mm
No.Teeth
N
1/4” Wide Belt 3/8” Wide Belt
Cat. No. Wt. gms. Cat. No. Wt. gms.
240XL250XL260XL270XL276XL290XL310XL316XL320XL330XL344XL352XL364XL380XL384XL390XL392XL434XL530XL600XL
609.60635.00660.40685.80701.04736.60787.40802.64812.80838.20873.76894.08924.26965.20975.36990.60995.68
1102.361346.201524.00
120125130135138145155158160165172176182190192195196217265300
8.89.29.59.9
10.110.611.411.611.712.112.612.913.313.914.114.314.415.919.422.0
13.213.714.314.815.215.917.117.417.618.118.919.420.020.921.121.421.623.929.133.0
240XL025DD250XL025DD260XL025DD270XL025DD276XL025DD290XL025DD310XL025DD316XL025DD320XL025DD330XL025DD344XL025DD352XL025DD364XL025DD380XL025DD384XL025DD390XL025DD392XL025DD434XL025DD530XL025DD600XL025DD
240XL037DD250XL037DD260XL037DD270XL037DD276XL037DD290XL037DD310XL037DD316XL037DD320XL037DD330XL037DD344XL037DD352XL037DD364XL037DD380XL037DD384XL037DD390XL037DD392XL037DD434XL037DD530XL037DD600XL037DD
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:52 Page 31
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
F
E
Classical Timing Belt Pulleys have evenly spaced grooves cut in their periphery, to make correct, positive engagement with themating teeth of the belt. Cross & Morse pulleys are manufactured with involute groove form to enable the teeth to enter and leavethe pulley with negligible friction and minimum backlash.Pulleys are available in a number of stock widths and large selection of numbers of teeth to provide maximum versatility in driveselection. Pulleys for 3/8” pitch ‘L’, and 1/2” pitch ‘H’, drives are available with pilot bore for reworking to customers requirementsor with taper bush for the complete off the shelf drive. All pulleys are precision manufactured to close tolerances to ensure concentric running, and it is important when reworking stock pulleys to accurately locate on the outside diameter to maintainconcentricity.Pulleys of non-standard widths or numbers of teeth can be supplied to order, or alternately teeth can be cut on customers blanks.All pulleys are manufactured in good quality steel except for larger pulleys where cast iron is used (1/5” pitch ‘XL’ are also availablein aluminium. Generally pulleys up to 48 teeth are supplied with two flanges to retain the timing belt. These flanges are accuratelymachined, pressed onto the pulley bodies and retained by spin rivetting. Dimensions over and between flanges for standard pulleys are indicated below. The dimension over the flanges is generally the same as recommended width of tooth for unflanged pulleys.
ApproxWeight
kg
RimDiameter
N
Classical Timing Belt Pulleys
Catalogue No.No.
TeethZ
PulleyType
PitchCircle
Dia. dp
Max.Bore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
10XL03711XL03712XL03713XL03714XL03715XL03716XL03717XL03718XL03719XL03720XL03721XL03722XL03724XL03726XL03727XL03728XL03730XL03732XL03734XL03735XL03736XL03738XL03740XL03742XL03744XL03748XL03760XL03772XL037
Min.Bore
d
1/5” Pitch Pulleys for 3/8” Wide Belts. Ref. XL037
Belt Size
Belt Width Ref.
Belt Width
E
F min.
(1/5”) XL
XL0373/8”
10.7
14.3
L0501/2”
14.3
19.0
L0753/4”
20.8
25.5
L100
1”
27.0
32.0
H1001”
27.0
32.0
H150
11/2”
40.0
45.0
H200
2”
53.0
58.0
H300
3”
79.0
84.0
(3/8”) L (1/2”) H
Standard Pulleys for XL (1/5” pitch) Belts
1011121314151617181920212224262728303234353638404244486072
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1111111222
16.1717.7919.4021.0222.6424.2625.8727.4929.1130.7232.3433.9635.5738.8142.0443.6645.2848.5151.7454.9856.6058.2161.4564.6867.9171.1577.6297.02
116.43
4.04.04.04.04.06.06.06.06.06.06.06.06.06.08.08.08.08.08.08.08.08.08.08.08.08.0
10.010.010.0
6677
10101013131315151620202022252529292929292929292929
15.717.318.920.522.123.825.427.028.630.231.833.535.138.341.543.244.848.051.254.556.157.761.064.267.470.677.196.5
115.9
23232528282832353538383841444848515457––––––––––
14.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.314.3
20.020.020.020.020.020.020.020.020.022.022.022.022.022.022.022.022.022.025.025.025.025.025.025.025.025.025.025.025.0
9.59.5
10.010.015.015.016.020.020.020.023.523.525.030.030.030.034.038.038.045.045.045.045.045.045.045.045.045.045.0
––––––––––––––––––––––––––
6180
100
0.020.020.030.040.050.050.060.070.080.090.110.120.130.150.190.200.220.240.120.120.130.140.160.170.180.190.210.250.30
All dimensions in mm.
L
F
d MA dp do d Mdo
FL
dp
FL
dodp N d M
Type 1 Type 2Type 1F
Pulley Types available in both steel and aluminium. For steel add ‘C’ to part number, for aluminium add ‘L’.
32
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:52 Page 32
INDEX BACK NEXT
33
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
L
F
d MA dp do
Type 1FMaterial: Steel
Type 2Material: Cast Iron
Webs have lightening holes
Type 2FMaterial: Cast Iron
Webs have lightening holes
FL
dodp N d M
P10L050P12L050P13L050P14L050P15L050P16L050P17L050P18L050P19L050P20L050P21L050P22L050P23L050P24L050P25L050P26L050P27L050P28L050P30L050P32L050P36L050P40L050P44L050P48L050
P60L050P72L050P84L050P96L050
101213141516171819202122232425262728303236404448
60728496
30.3236.3839.4142.4545.4848.5151.5454.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28133.40145.53
181.91218.30254.68291.06
888888
101010101010101010111111111111111111
14141414
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F2F2F2F
2222
131519192324242727273030363638383838464646464646
45454545
29.635.638.741.744.747.850.853.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5132.6144.8
181.2217.5253.9290.3
37434448515457606467707579798387879197
102115128142150
––––
191919191919191919191919191919191919191919191919
19191919
283030303032323232323232323232323232323232323232
42424242
202428283436364040404545555858585870707070707070
75757575
–––––––––––––––––––––
100112124
160197233269
0.120.160.190.220.290.340.380.420.460.500.570.610.710.810.850.910.971.031.071.231.501.772.202.68
3.104.865.006.00
CatalogueNo.
Plain Bore Pulleys for‘L’ Series Timing Belts
Pulley TypesThe Pulley types referred to in tables are as drawings below. Suffix ‘F’ indicates pulley has flanges. Pulley below dividing line in tables are manufactured in cast iron. Std.Pulleys can be reworked tocustomers bore and keywayrequirements.
No.Teeth
Z
PulleyType
PitchCircle
Diameterdp
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
3/8” Pitch Pulleys for 1/2” wide Belts. Ref. L050
Approx.Weight
kg
3/8” Pitch Pulleys for 3/4” wide Belts. Ref. L075
P10L075P12L075P13L075P14L075P15L075P16L075P17L075P18L075P19L075P20L075P21L075P22L075P23L075P24L075P25L075P26L075P27L075P28L075P30L075P32L075P36L075P40L075P44L075P48L075
P60L075P72L075P84L075P96L075
101213141516171819202122232425262728303236404448
60728496
30.3236.3839.4142.4545.4848.5151.5454.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28133.40145.53
181.91218.30254.68291.06
888
111111111111111111111111111111111111111111
14141414
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F2F2F2F
2222
131519192324272727303030363638383838464646464646
45454545
29.635.638.741.744.747.850.853.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5132.6144.8
181.2217.5253.9290.3
37434448515457606467707579798387879197
102115128142150
––––
252525252525252525252525252525252525252525252525
25252525
383838383838383838383838383838383838383838383838
45454545
202428283436364040404545555558585858707070707070
75757575
–––––––––––––––––––––
100112124
160197233269
0.180.220.250.270.340.430.470.510.550.590.640.770.850.971.021.081.181.201.371.541.892.352.753.19
3.444.585.607.00
3/8” Pitch Pulleys for 1” wide Belts. Ref. L100
P10L100P12L100P13L100P14L100P15L100P16L100P17L100P18L100P19L100P20L100P21L100P22L100P23L100P24L100P25L100P26L100P27L100P28L100P30L100P32L100P36L100P40L100P44L100P48L100
P60L100P72L100P84L100P96L100
30.3236.3839.4142.4545.4848.5151.5454.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28133.40145.53
181.91218.30254.68291.06
888
111111111111111111111111111111111111111111
14141414
131519192324242727273030363638383838464646464646
45454545
29.635.638.741.744.747.850.853.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5132.6144.8
181.2217.5253.9290.3
323232323232323232323232323232323232323232323232
32323232
454545454545454545454545454545454545454545454545
50505050
202428283436364040404545455558585858707070707070
75757575
–––––––––––––––––––––
100112124
160197233269
0.180.260.300.340.410.480.550.620.700.720.770.881.121.161.181.241.351.421.611.842.322.863.363.86
3.555.006.308.20
37434448515457606467707579798387879197
102115128142150
––––
101213141516171819202122232425262728303236404448
60728496
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F2F2F2F
2222
All dimensions in mm. Other sizes of Pulleys can be supplied on short delivery. All Pulleys can be supplied finish bored and keywayed. Parallel bore pulleys can be machined and fitted with bearings for idler pulleys. When using pulleys as inside idlers itis recommended that number of teeth of idler should be more than that of smaller drive pulley.
d MA dp do
L
F
N
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:52 Page 33
INDEX BACK NEXT
Te
l +
44
1
21
3
60
0
15
5 F
ax
+
44
1
21
3
25
1
07
9 E
ma
il s
ale
s@
cr
os
sm
or
se
.c
om
P14H100P16H100P18H100P19H100P20H100P21H100P22H100P24H100P26H100P28H100P30H100P32H100P36H100P40H100
P44H100P48H100P60H100P72H100P84H100P96H100
P120H100
d MA dp do
L
F
N
L
F
d MA dp do
Type 1FMaterial: Steel
Type 2Material: Cast Iron
FL
dodp N d M
––––––––––––
118134
150166215263312360458
1.401.892.382.603.103.323.674.405.205.607.007.809.90
12.20
15.0011.4013.3019.0020.0027.0033.00
8686868686868686868686868686
86868686868686
64707983879193
102112120128135150168
–––––––
2830364041434547545454544848
48545462627070
56.6064.6872.7776.8180.8584.8988.9497.02
105.11113.19121.28129.36145.53161.70
177.87194.04242.55291.06339.57388.08485.10
1111191919191919191919191919
24242428282828
1F1F1F1F1F1F1F1F1F1F1F1F2F2F
2222222
No.Teeth
Z
Other sizes of Pulleys can be supplied on short delivery. All dimensions in mm.All Pulleys can be supplied finish bored and keywayed.
ApproxWeight
kg
RimDiameter
N
Plain Bore Pulleys for‘H’ Series Timing Belts
CatalogueNo.
PulleyType
PitchCircle
Dia. dp
Max.Bore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
Min.Bore
d1/2
” Pitch Pulleys for 1” Wide Belts. Ref. H100
56.6064.6872.7776.8180.8584.8988.9497.02
105.11113.19121.28129.36145.53161.70
177.87194.04242.55291.06339.57388.08485.10
3232323232323232323232323232
32323232323232
1/2” Pitch Pulleys for 11
/2” Wide Belts. Ref. H150
1416181920212224262830323640
444860728496
120
1F1F1F1F1F1F1F1F1F1F1F1F2F2F
2F2F22222
1111121414141414141414141414
14141919191919
3030364041434547545454544848
48545462627070
55.263.371.475.479.583.587.695.7
103.7111.8119.9128.0144.2160.3
176.5192.7241.2289.7338.2386.7483.7
64707983879193
102112120128135150168
184200–––––
4545454545454545454545454545
50505055556060
4545556062656872808080808080
809090
100100120120
––––––––––––
118134
150166215263312360458
0.670.881.061.231.331.431.631.952.302.532.933.063.924.95
6.205.307.509.00
10.0013.8022.00
P14H150P16H150P18H150P19H150P20H150P21H150P22H150P24H150P26H150P28H150P30H150P32H150P36H150P40H150
P44H150P48H150P60H150P72H150P84H150P96H150
P120H150
56.6064.6872.7776.8180.8584.8988.9497.02
105.11113.19121.28129.36145.53161.70
177.87194.04242.55291.06339.57388.08485.10
4646464646464646464646464646
46464646464646
1416181920212224262830323640
444860728496
120
1F1F1F1F1F1F1F1F1F1F1F1F2F2F
2F2F22222
1111141414141414141414141414
19191924242424
2830364041434547545454544848
48545462627070
55.263.371.475.479.583.587.695.7
103.7111.8119.9128.0144.2160.3
176.5192.7241.2289.7338.2386.7483.7
64707983879193
102112120128135150168
184200–––––
5858585858585858585858585858
58656565656565
––––––––––––
118134
150166215263312360458
0.951.081.451.551.701.872.072.502.993.393.864.375.506.80
8.508.809.00
11.0013.0017.0025.00
4245556062656872808080808080
809090
100100120120
1/2” Pitch Pulleys for 2” Wide Belts. Ref. H200
P14H200P16H200P18H200P19H200P20H200P21H200P22H200P24H200P26H200P28H200P30H200P32H200P36H200P40H200
P44H200P48H200P60H200P72H200P84H200P96H200
P120H200
56.6064.6872.7776.8180.8584.8988.9497.02
105.11113.19121.28129.36145.53161.70
177.87194.04242.55291.06339.57388.08485.10
5959595959595959595959595959
59595959595959
1416181920212224262830323640
444860728496
120
1F1F1F1F1F1F1F1F1F1F1F1F2F2F
2F2F22222
2830364041434547545454544848
48545462627070
55.263.371.475.479.583.587.695.7
103.7111.8119.9128.0144.2160.3
176.5192.7241.2289.7338.2386.7483.7
64707983879193
102112120128135150168
184200–––––
7070707070707070707070707070
70757575757575
––––––––––––
118134
150166215263312360458
1.101.341.651.902.112.232.452.973.614.104.745.607.108.40
10.508.60
11.0014.0015.0020.3028.00
4245556062656872808080808080
809090
100100120120
1111141414141414141414141414
19242428282828
1/2” Pitch Pulleys for 3” Wide Belts. Ref. H300
P14H300P16H300P18H300P19H300P20H300P21H300P22H300P24H300P26H300P28H300P30H300P32H300P36H300P40H300
P44H300P48H300P60H300P72H300P84H300P96H300
P120H300
1416181920212224262830323640
444860728496
120
55.263.371.475.479.583.587.695.7
103.7111.8119.9128.0144.2160.3
176.5192.7241.2289.7338.2386.7483.7
100100100100100100100100100100100100100100
100100100100100100100
4245556062656872808080808080
809090
100100120120
Pulley TypesThe pulley types referred to intables are as drawings below.The suffix ‘F’ indicates pulley has flanges.
Pulleys below dividing line in tables are in Cast iron, and ofspoked design. Std. Pulleys can be reworked tocustomers bore and keyway.
Type 2FMaterial: Cast Iron
34
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:52 Page 34
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35
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21
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5 F
ax
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3
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1
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9 E
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L
A N do dp
F
F
dp do M N
L
dp do
F/L
A
Pulley TypesPulley types referred to in tables are as drawings below. The suffix ‘F’ indicates pulleyhas flanges. Pulleys belowdividing line in tables aremanufactured in cast iron. Types 7, 10 & 12 when in cast iron have lightening holes.
Pulley InstallationCorrect and accurate installation of Timing Drives is essential. Pulley alignment and shaft parallelism is very important as misalignment ofthe drive will cause unequal loading across the belt width and edge wear of belt on flanges. Pulley alignment can be checked by placing astraight edge against the outside edge of the pulleys and adjusting so contact made evenly across both pulleys.The shaft should be located within a rigid framework, as any distortion under load could result in a reduction of centre distance which willcause jumping of belt on pulley teeth. If idlers are used they must be locked firmly into position after correct belt tensioning. Refer to page 10 for additional information on drive installation.
18L05019L05020L05021L05022L05023L05024L05025L05026L05027L05028L05030L05032L05036L05040L05048L05060L050
72L05084L05096L050
120L050
1919191919191919191919191919191919
19191919
4545484851545456606265707485888892
9292
106106
_________________
120166
202236270343
CatalogueNo.
Taper Bore Pulleys for‘L’ Series Timing Belts
No.Teeth
Z
PulleyType
PitchCircle
Diameterdp
TaperBushSize
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
3/8” Pitch Pulleys for 1/2” wide Belts. Ref. L050
Approx.Weight
kg
1819202122232425262728303236404860
728496
120
8F8F8F8F8F8F8F8F8F8F8F8F8F8F8F
11F7
7777
54.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28145.53181.91
218.30254.68291.06363.83
2828282828282828282828282828424242
42425050
53.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5144.8181.2
217.5253.9290.3363.1
606467707579798386869197
102115128150_
____
2222222222222222222222222222252525
25253232
0.170.200.230.300.360.410.450.500.550.610.680.820.981.381.751.762.18
3.004.005.506.80
3/8” Pitch Pulleys for 3/4” wide Belts. Ref. L075
11081108110811081108110811081108110811081108110811081108161016101610
1610161020122012
18L07519L07520L07521L07522L07523L07524L07525L07526L07527L07528L07530L07532L07536L07540L07548L07560L075
72L07584L07596L075
120L075
2525252525252525252525252525252525
25252525
________________
120166
202236270343
1819202122232425262728303236404860
728496
120
9F9F9F9F9F9F9F9F9F9F9F9F9F9F9F
10F10
10777
54.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28145.53181.91
218.30254.68291.06363.83
2828282828282828282828282842424242
42505050
53.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5144.8181.2
217.5253.9290.3363.1
606467707579798386869197
102115128150_
____
0.240.280.330.380.450.520.580.640.710.790.861.041.211.411.862.503.00
4.005.206.507.60
11081108110811081108110811081108110811081108110811081610161016101610
1610201220122012
2525252525252525252525252525252525
25323232
________________
9292
9292
106106
3/8” Pitch Pulleys for 1” wide Belts. Ref. L100
18L10019L10020L10021L10022L10023L10024L10025L10026L10027L10028L10030L10032L10036L10040L10048L10060L100
72L10084L10096L100
120L100
3131313131323232323232323232323232
32323232
383845454852525460606571758696
120166
202236270343
1819202122232425262728303236404860
728496
120
5F5F5F5F5F5F5F5F5F5F5F5F5F5F5F
14F12
10101010
54.5757.6160.6463.6766.7069.7372.7775.8078.8381.8684.8990.9697.02
109.15121.28145.53181.91
218.30254.68291.06363.83
2828282828282828282828323242424242
50505050
53.856.859.962.965.969.072.075.078.181.184.190.296.3
108.4120.5144.8181.2
217.5253.9290.3363.1
606467707579798386869197
102115128150_
____
0.250.310.360.410.470.530.600.670.730.800.870.981.181.421.702.702.40
4.406.007.108.50
11081108110811081108110811081108110811081108121012101610161016101610
2012201220122012
________________
9292
9292
106106
2222222222222222222222252525252525
32323232
All dimensions in mm. For Taper Bush dimensions refer page 25.
dp do M A
FL
Type 9F
Type 8F
Type 7
Type 5F
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:53 Page 35
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Taper Bore Pulleys for‘H’ Series Timing Belts
16H10018H10019H10020H10021H10022H10023H10024H10025H10026H10027H10028H10030H10032H10036H10040H10044H10048H100
60H10072H10084H10096H100
120H100
161819202122232425262728303236404448
60728496
120
64.6872.7776.8180.5584.8988.9492.9897.02
101.06105.11109.15113.19121.28129.36145.53161.70177.87194.04
242.55291.06339.57388.08485.10
5F5F5F5F5F5F5F5F5F5F5F5F5F
17F17F17F10F10F
121212
77
CatalogueNo.
No.Teeth
Z
PulleyType
PitchCircle
Diameterdp
TaperBushSize
MaxBore
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
RimDiameter
N
1/2” Pitch Pulleys for 1” wide Belts. Ref. H100
Approx.Weight
kg
64.6872.7776.8180.5584.8988.9492.9897.02
101.06105.11109.15113.19121.28129.36145.53161.70177.87194.04
242.55291.06339.57388.08485.10
110812101210121012101210161016101610161016101610161016101610161020122012
20122012201225172517
283232323232424242424242424242425050
5050506060
63.371.475.479.583.587.691.695.799.7
103.7107.8111.8119.9128.0144.2160.3176.5192.7
241.2289.7338.2386.7483.7
70798387919397
102106112115120128135150168184200
_____
313131313232323232323232323232323232
3434343434
222525252525252525252525252525253232
3232324545
_____________
809292
106106
929292
106106
45525660646770747782859098
106121138152169
223270318366462
0.881.061.231.331.431.631.851.932.072.302.402.532.933.063.924.956.205.30
7.509.00
10.0013.8022.00
1/2” Pitch Pulleys for 11/2” wide Belts. Ref. H150
18H15019H15020H15021H15022H15023H15024H15025H15026H15027H15028H15030H15032H15036H15040H15044H15048H150
60H15072H15084H15096H150
120H150
1819202122232425262728303236404448
60728496
120
5F5F5F5F5F5F5F5F5F5F5F5F
17F17F17F17F17F
1212121212
72.7776.8180.5584.8988.9492.9897.02
101.06105.11109.15113.19121.28129.36145.53161.70177.87194.04
242.55291.06339.57388.08485.10
12101210121012101210161016101610161016101610161016101610161020122012
20122012201225172517
3232323232424242424242424242425050
5050506060
71.475.479.583.587.691.695.799.7
103.7107.8111.8119.9128.0144.2160.3176.5192.7
241.2289.7338.2386.7483.7
798387919397
102106112115120128135150168184200
_____
4545454545454545454545454545454545
4646464646
2525252525252525252525252525253232
3232324545
____________
809292
106106
929292
106106
525660646770747782859098
106121138152169
223270320366462
1.451.551.701.872.072.282.502.712.993.153.393.864.375.506.808.508.80
9.0011.0013.0017.0025.00
1/2” Pitch Pulleys for 2” wide Belts. Ref. H200
18H20019H20020H20021H20022H20023H20024H20025H20026H20027H20028H20030H20032H20036H20040H20044H20048H200
60H20072H20084H20096H200
120H200
1819202122232425262728303236404448
60728496
120
5F5F5F5F5F5F5F5F5F5F5F5F5F
17F17F17F17F
1212121212
72.7776.8180.5584.8988.9492.9897.02
101.06105.11109.15113.19121.28129.36145.53161.70177.87194.04
242.55291.06339.57388.08485.10
12101210161016101610161016101610161016101610161020122012201220122517
25172517251725172517
3232424242424242424242425050505060
6060606060
71.475.479.583.587.691.695.799.7
103.7107.8111.8119.9128.0144.2160.3176.5192.7
241.2289.7338.2386.7483.7
798387919397
102106112115120128135150168184200
_____
5858585858585858585858585858585858
6060606060
2525252525252525252525253232323245
4545454545
_____________
102106106119
119119119119119
525660646770747782859098
106121140150168
223270318366462
1.651.902.112.232.452.712.973.323.613.904.104.745.607.108.40
10.508.60
11.0014.0015.0020.3028.00
1/2” Pitch Pulleys for 3” wide Belts. Ref. H300
20H30021H30022H30023H30024H30025H30026H30027H30028H30030H30032H30036H30040H30048H300
60H30072H30084H30096H300
120H300
2021222324252627283032364048
60728496
120
13F13F13F13F13F13F13F13F13F13F13F13F13F12F
1212121212
80.5584.8988.9492.9897.02
101.06105.11109.15113.19121.28129.36145.53161.70194.04
242.55291.06339.57388.08485.10
16151615161516151615161516152012201220122517251725172517
25172517251730303030
4242424242424250505060606060
6060607575
79.583.587.691.695.799.7
103.7107.8111.8119.9128.0144.2160.3192.7
241.2289.7338.2386.7483.7
87919397
102106112115120128135150168200_____
8484848484848484848484848486
8686868686
3838383838383832323245454545
4545457676
____________
119119
119119119150150
65656770747782859098
106121138168
223270318366462
3.103.323.674.004.404.795.205.405.607.007.809.90
12.2011.40
13.3019.0020.0027.0033.00
All dimensions in mm. For details of Taper Bushes refer to page 25.
Types 10/10F
Type 11F
Type 17F
Type 12/12F
dp doF/L
A M N
Type 13F
dp do
F
A M N
L
dp do
F
A M N
L
dp do
F
N
L
A
dp do
F
M
L
NA
36
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The ‘AT’ series of Polyurethane belts have increased tooth widthand higher strength tension members than the ‘T’ Series.The increased tooth size with resultant increased stiffness improvesmeshing with pulley teeth and enables transmission of higer powers. Increased strength tension members improve pitch accuracy and also increase power capacity. Both improvementsresult in an increase of power transmission capacity of approx 50%.Quieter operation, as a result of improved tooth meshing, andreduced polygonal effect plus ability to use narrower section belts,is combined with improved positional accuracy of power transmission, with linear accuracy better than ± 0.1mm/Metre beltlength.
Polyurethane belts are suitable for drives in a wide variety ofmachinery including Office machinery, Machine Tools, Pumps,Textile Machinery, Printing Machinery, Paper manufacturers, downto precision Camera drives and servo mechanisms.
AT10
T10
AT5
T5
T2.5
Polyurethane Timing BeltsPolyurethane Timing Belts are offered in three standard metric pitches, 2.5mm, 5mm, and 10mm, and also standardimperial pitch, 1/5” (XL). In addition to the standard singlesided belts, double sided belts with moulded teeth on bothsides of the belt can be supplied (T5 and T10 only) formultishaft, serpentine drives and some conveyorapplications.The metric belts are offered in two designs ‘T’and ‘AT’ series both using steel tension cords encased in thepolyurethane jacket with integral drive teeth. The methodof manufacture ensures close control of pitch length, whichcombined with the inelastic properties of the steel tensionmember create a belt drive with high positional accuracyresulting in these belts being popular for instrument drives,robotics, and servo mechanisms. The imperial pitch beltsuse Kelvar tension members for increased strength andflexibility making them suited to higher power applications.The metric series belts can be also supplied with Kelvartension member if required. Polyurethane has excellentresistance to mineral oils, greases and many slight acidicsolutions, it is basically non marking and resistant tocrumbling making it suitable for food and cigeretteprocessing machines, and for paper handling in officeequipment. Polyurethane belts can be used on applicationswith enviromental temperature range -30°C, to 80°C, withbelt speed up to 80 m/sec. In addition to the standard beltlisted on page 39, open ended belt can be supplied for mostconstructions and widths, and fitted with weldedattachments for conveying applications and positional rackdrives, refer to page 45 for further details. The low inertia ofthe belts and alunimum pulleys plus accurate pitching makeboth the endless and open ended belt ideal for the highacceleration rates encountered in robotics.The highflexibility of the polyurethane belt enables crossed drives tobe achieved (shafts at right angles), where reasonable lengthcentres exist and narrow width belts are used. Both highshaft speeds and power capablities can be achieved with the‘T’ and ‘AT’ series of belts. The T2.5, T5, and AT5 belts are allable to run at up to 40,000 r.p.m with AT5 belts transmitting15kW. The T10 and AT10 belts, can operate to 15,000 r.p.mwith power capacity to 70kW, and higher powers of up to200kW can be achieved with 20mm pitch AT 20 beltsavailable to special order.
1010 100 10000.01
1.0
10
100
Standard Belt Power Ratings
PO
WE
R R
ATIN
G k
W
10,000
SHAFT SPEED r.p.m.
0.1
AT Series Polyurethane Timing Belts
Belt SizeWidth x Pitch
Max. AllowableBelt Tension N.
Min. No. TeethDrive Pulley
Min dia of Idler Pulley mm
6T2.510T516T525T5
16T1025T1032T1050T1010AT516AT5 25AT5
25AT1032AT1050AT10
65330570930
1100180023003800490840
1100350047507750
1010101012121212151515151515
1530303060606060606060
120120120
Design limits for standard Polyurethane Timing Belts.
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The most important factor considered when selecting a Polyurethane“T” or “AT” series belt is the tooth shear strength. The calculation ofPower capacity is based on the specific shear strength of each tooth inmesh relative to the belt width in cms. The maximum tooth shearstrength Fs must not be exceeded. Values for tooth shear strength areshown in the table at foot of the page. The ‘AT’ series belts offer ahigher tooth strength due to the larger tooth cross section. The highpitch accuracy of Polyurethane belts allows for up to 12 teeth to sharethe drive loads. Other factors which should be considered in beltselection are the number of teeth on the small pulley and diameters oftensioners/idlers pulleys. The drive design should also ensure that themaximum working load does not exceed maximum allowable tensionof the members Fm.
In order to make a selection it is first neccessary to compile together the following relevant design parameters
a) Power to be transmitted P. kWb) Speed of fastest shaft N1 r.p.m.c) Drive ratio required, i - reduction or speed increase.d) Maximum pulley diameters which can be accomodated.e) Type of driver and driven equipment.f ) Shaft diameters and centre distance A
Selection of Belt Pitch and Width.
1) The size of Belt selected must always ensure maximum toothshear and tensile strengths are not exceeded, and that pulley sizes meet their critera. Under start-up conditions normal running torques can be exceeded by 2-2.5 times with electric motors, and this must be allowed for in the calculation.Peak loads caused by oscillating and torsional loads can be up to1.7 times mean torque loads, and design factor f1* should consider this. Emergency braking systems may impose the maximum torque in the application.Speed increase drives impose heavier shock conditions, and afactor needs to be applied to cover these as below :-i = 1 to 1.5 f2 = 1.1i = 1.5 to 2.5 f2 = 1.2i = 2.5 + f2 = 1.3
* Values for f1 can be found on page 4 , Table 1.
The total design factor fd = f1 + f2 or start-up overload factor fswhich ever is highest
The design Power Pd = P x fd or fs
Using graph on page opposite select suitable belt size to transmit thedesign power at the shaft speed N1 r.p.m.
2. Select number of teeth in pulleys, by consideration of therestraints of maximum pulley diameter and shaft diameters.The minimum pulley pitch diameter should be at least twice shaft diameter. The minimum number of teeth on the pulleys is also constrained by the belt design, reference belt characteristics table opposite page.The actual pulley diameters can be obtained by referring to pulley dimension tables on pages 40-43 or by using formula.
Pitch dia pulley dp = Z.p mm`
The number of teeth in small and large pulleys can be determined from the drive reduction ratio i.
i = Z2
Z1
3) Determine the number of teeth in mesh on small pulley Zm
from formula
Zm = Z1 2` `
4) Determine belt tension from drive Power Pd or drive torque Md
FT = 1000.PdZ1.N1.p
or FT = 2000 Tddp
5) Determine belt width by consideration of belt tooth shear strength
belt width b = FTFs. Zm.
Polyurethane Belt DrivesSelection Procedure
Terms and Definitions :-A = centre distance pulley shafts mmb = belt width cmd = bore of pulley mmdp = pitch diameter of pulley mmfd = design factor fs = starting overload factor Fm = max. working tension in belt NFs = tooth shear resistance (see table below) N/cmFT = total linear force on belt Ni = drive ratio L = belt Length mmN1 = shaft speed - high speed shaft r.p.m.N2 = shaft speed - low speed shaft r.p.m.P = motor power k.wPd = design power k.wP = belt pitch mmZ1 = no teeth on small pulleyZ2 = no teeth on large pulleyZm = no teeth in mesh in small pulley
Pulley SpeedN r.p.m T2.5
(( _ Sin 1[ Z2 _ Z1
`. A
[
from power input
from torque input
cm
T5 T10 AT5 AT10
Value for Teeth Shear Resistance Fs N/cm
020406080
100200300400500600700800900
100011001200130014001500160017001800190020002200240026002800300032003400360038004000450050005500600065007000750080009000
1000012000150001800020000
9.038.728.488.288.107.957.397.016.716.486.286.115.975.835.715.615.515.415.335.255.175.105.044.974.914.804.704.604.514.434.364.284.224.154.093.953.823.703.603.513.423.333.263.112.992.772.502.282.15
24.0023.3822.8622.4122.0121.6520.2819.3018.5517.9317.4116.9616.5616.2015.8815.5815.3115.0614.8314.6114.4014.2114.0313.8513.6913.3813.1012.8412.5912.3712.1611.9611.7711.5911.4211.0310.6810.3610.079.819.569.339.118.728.37____
50.5049.0047.7046.6045.7044.8041.4039.1037.2035.7034.4033.3032.4031.5030.7030.0029.3028.7028.2027.6027.1026.7026.2025.8025.4024.6023.9023.3022.7022.2021.7021.2020.7020.3019.8618.9118.0617.2816.5815.9315.3314.7614.2413.2812.42_
___
35.334.934.534.133.833.532.030.929.829.028.227.526.826.325.725.224.824.323.923.523.222.822.522.221.921.320.820.319.819.419.018.618.317.917.616.916.215.615.014.514.013.513.112.311.6____
35.334.934.534.133.833.532.030.929.829.028.227.526.826.325.725.224.824.323.923.523.222.822.522.221.921.320.820.319.819.419.018.618.317.917.616.916.215.615.014.514.013.513.112.311.6____
73.572.471.470.569.668.765.062.159.557.455.553.752.250.849.548.347.246.245.244.343.442.641.841.040.339.037.836.635.534.533.632.731.931.130.328.526.925.524.223.021.820.819.817.916.3____
Select the next largest standard width for belt.If result from below formula for belt width gives impracticalresult rework selection sequence with next sizes of belt to obtain revised width.
6) Final chack belt tension maximum Fm is not exceeded i.e.
Fm ≥ FT
7) To determine belt length refer to paragraph 5 on page 3.
38
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39
T10-260*T10-340T10-370T10-390T10-400T10-410T10-440T10-450T10-480T10-500T10-530*T10-550T10-560T10-600T10-610T10-630*T10-650T10-660*T10-680T10-690T10-700T10-720*T10-730T10-750T10-780T10-800T10-810T10-840*T10-850T10-880T10-890T10-900T10-910T10-920*T10-950T10-960T10-970T10-980*T10-1010T10-1080T10-1110T10-1140T10-1150T10-1200T10-1210*T10-1240*T10-1250*T10-1300T10-1320*T10-1350*T10-1390T10-1400T10-1420*T10-1440T10-1450T10-1460T10-1500T10-1560T10-1610*T10-1700T10-1750T10-1780T10-1880*T10-1960T10-2250
Te
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Standard Stock Polyurethane BeltsStandard belts are available in a number of stock widths asindicated below. For metric belts an individual belt referencenumber is obtained by prefixing the catologue reference shownin tables, by its width in mm. For example a 280mm long belt ofT5 construction with 12mm width has reference:
12T5-280belt width - construction - length
For imperial pitch belts, the references are as rubber belts butprefixed ‘U’, e.g. U150XL037. Other pitches, belt lengths andwidths can supplied to order. Contact Cross & Morse for furtherinformation.
Width Ref.
253750
U-XL Belt Widthsand Weights
Belt Width Weightgms/m
6.39.5
12.7
142128
Open ended and long lengthfabricated belts are also available.Refer to page 44 for further details.
489668
126
387754
101
1524483463
6 915
21
Belt Widths and Weights T & AT SeriesBeltType
T2.5T5T10AT5AT10
Belt Width mm
4 6 8 10 12 16 20 25 32 50 75
1219
27
1829584176
6012085
158
154
202
240
315
360
473Figures in Belt Width column for respective type of belt are weight gms/metrelength.Unshaded weights are Standard Stock width belts, shaded are to order only.
Cat. Ref.
T2.5-120T2.5-145T2.5-160T2.5-177T2.5-180T2.5-182T2.5-200T2.5-230T2.5-245T2.5-265T2.5-285T2.5-290T2.5-305T2.5-317T2.5-330T2.5-380T2.5-420T2.5-480T2.5-500T2.5-540T2.5-600T2.5-620T2.5-650T2.5-680T2.5-700T2.5-780T2.5-880T2.5-915T2.5-950T2.5-1185
2.5mm Pitch Belts - Ref. T2.5
Lengthmm No. Teeth
120.0145.0160.0177.5180.0182.5200.0230.0245.0265.0285.0290.0305.0317.5330.0380.0420.0480.0500.0540.0600.0620.0650.0680.0700.0780.0880.0915.0950.0
1185.0
485864717273809298
106114116122127132152168192200216240248260272280312352366380474
Cat. Ref.
U60-XLU70-XLU80-XLU90-XL
U100-XLU110-XLU120-XLU130-XLU140-XLU150-XLU160-XLU170-XLU180-XLU190-XLU200-XLU210-XLU220-XLU230-XLU240-XLU250-XLU260-XL
1/5” Pitch Belts -Ref. U-XL
Lengthmm No. Teeth
152.4177.8203.2228.6254.0279.4304.8330.2355.6381.0406.4431.8457.2482.6508.0533.4558.8584.2609.6635.0660.4
3035404550556065707580859095100105110115120125130
Cat. Ref.
T5-120T5-150T5-165T5-180T5-185T5-200T5-210T5-215T5-220T5-225T5-245T5-250T5-255T5-260T5-270T5-275T5-280T5-295T5-305T5-330T5-340T5-350T5-355T5-365T5-390T5-400T5-410*T5-420T5-425T5-440T5-445T5-450T5-455T5-460*T5-475T5-480T5-500T5-510T5-515T5-525T5-545T5-550T5-560T5-575T5-590*T5-610T5-620*T5-630T5-640T5-650T5-660T5-675T5-690T5-700T5-720T5-725T5-750*T5-765T5-780T5-815*T5-830T5-840T5-850T5-860*T5-885T5-900T5-940*T5-990T5-1075T5-1100*T5-1160T5-1200T5-1215T5-1275T5-1280T5-1315T5-1355T5-1380T5-1470T5-1500T5-1580T5-1955
5mm Pitch Belts - Ref. T5
Lengthmm No. Teeth
120150165180185200210215220225245250255260270275280295305330340350355365390400410420425440445450455460475480500510515525545550560575590610620630640650660675690700720725750765780815830840850860885900940990
10751100116012001215127512801315135513801470150015801955
243033363740424344454950515254555659616668707173788082848588899091929596
100102103105109110112115118122124126128130132135138140144145150153156163166168175172177180188198215220232240243255256263271276294300316391
Cat. Ref.
10mm Pitch Belts - Ref. T10
Lengthmm No. Teeth
260340370390400410440450480500530550560600610630650660680690700720730750780800810840850880890900910920950960970980
101010801110114011501200121012401250130013201350139014001420144014501460150015601610170017501780188019602250
2634373840414445485053555660616365666869707273757880818485888990919295969798
101108111114115120121124125130132135139140142144145146150156161170175178188196225
Cat. Ref.
AT5-225AT5-255AT5-275AT5-280AT5-300AT5-330AT5-340AT5-375AT5-390AT5-420AT5-450AT5-455AT5-480AT5-500AT5-525AT5-545AT5-600AT5-610AT5-630AT5-660AT5-670AT5-710AT5-720AT5-750AT5-780AT5-825AT5-860AT5-975AT5-1050AT5-1125AT5-1500AT5-2000
5mm Pitch Belts - Ref. AT5
Lengthmm No. Teeth
225255275280300330340375390420450455480500525545600610630660670710720750780825860975
1050112515002000
45515556606668757884909196
100105109120122126132134142144150156165172195210225300400
Cat. Ref.
AT10-370AT10-500AT10-560AT10-580AT10-600AT10-610AT10-660AT10-700AT10-730AT10-780AT10-800AT10-810AT10-840AT10-880AT10-890AT10-920AT10-960AT10-980AT10-1000AT10-1010AT10-1050AT10-1080AT10-1100AT10-1150AT10-1200AT10-1210AT10-1220AT10-1230AT10-1240AT10-1250AT10-1280AT10-1300AT10-1320AT10-1350AT10-1360AT10-1400AT10-1420AT10-1480AT10-1500AT10-1600AT10-1630AT10-1700AT10-1720AT10-1800AT10-1860AT10-1940
10mm Pitch Belts - Ref. AT10
Lengthmm No. Teeth
370500560580600610660700730780800810840880890920960980
1000101010501080110011501200121012201230124012501280130013201350136014001420148015001600163017001720180018601940
375056586061667073788081848889929698
100101105108110115120121122123124125128130132135136140142148150160163170172180186194
*These belt sizes are also available inDouble Sided construction suffix‘DD’ to Cat. No.
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:53 Page 39
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44
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3
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44
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Approx.Weight
kgCatalogue
No.
Pulleys for Metric PolyurethaneT2.5 and T5 Belts
Pulley TypesThe Pulley types referred to in tables are as drawings below.Suffix ‘F’ indicates pulley hasflanges. Std. Pulleys can be reworkedtocustomers bore andkeywaying requirement.
No.Teeth
ZPulleyType
PitchCircle
Diameterdp
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
2.5mm Pitch Pulleys for 6mm Wide Belt Ref. 6T2.5-
6 T2.5-126 T2.5-146 T2.5-156 T2.5-166 T2.5-186 T2.5-196 T2.5-206 T2.5-226 T2.5-246 T2.5-256 T2.5-266 T2.5-286 T2.5-306 T2.5-326 T2.5-366 T2.5-406 T2.5-446 T2.5-486 T2.5-60
12141516181920222425262830323640444860
0F0F0F0F1F1F1F1F1F1F1F1F1F1F1F1F1F11
9.5511.1411.9412.7314.3215.1215.9217.5119.1019.8920.6922.2823.8725.4628.6531.8335.0138.2047.75
4444444444446666668
4.56676.56.57788.599
10101314151722
16161616161616161616161616161616161616
13.015.015.016.017.518.020.023.023.023.025.025.028.032.036.038.042.0
––
9.010.611.412.213.814.615.417.018.519.320.121.723.324.928.131.334.537.747.2
9999
101010101010101010101010101010
13151516101011111213141416162022242634
.003
.004
.005
.005
.006
.007
.008
.010
.012
.013
.014
.016
.018
.020
.026
.032
.040
.048
.073
5mm Pitch Pulleys for 10mm Wide Belt Ref. 10T5-10 T5-10 10 T5-1210 T5-1410 T5-1510 T5-1610 T5-1810 T5-1910 T5-2010 T5-2210 T5-2410 T5-2510 T5-2610 T5-2710 T5-2810 T5-3010 T5-3210 T5-3610 T5-4010 T5-4210 T5-4410 T5-4810 T5-60
10121415161819202224252627283032364042444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
15.9219.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
4446666666668888888888
578
10111314151517171719202224242626293242
15.018.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
19.523.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
15151515151515151515151515151515151515151515
21212121212121212121212121212121212121212121
8111316182022232426262630323438384040455065
.012
.016
.019
.021
.025
.031
.036
.038
.046
.054
.058
.062
.064
.071
.075
.088
.114
.138
.153
.170
.200
.308
5mm Pitch Pulleys for 16mm Wide Belt Ref. 16T5-
16 T5-10 16 T5-1216 T5-1416 T5-1516 T5-1616 T5-1816 T5-1916 T5-2016 T5-2216 T5-2416 T5-2516 T5-2616 T5-2716 T5-2816 T5-3016 T5-3216 T5-3616 T5-4016 T5-4216 T5-4416 T5-4816 T5-60
10121415161819202224252627283032364042444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
15.9219.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
4446666666668888888888
578
10111314151517171719202224242626293242
15.018.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
19.523.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
27272727272727272727272727272727272727272727
8111316182022232426262630323438384040455065
.016
.022
.027
.030
.036
.044
.050
.054
.055
.077
.082
.086
.092
.094
.106
.124
.160
.195
.206
.230
.282
.432
21212121212121212121212121212121212121212121
5mm Pitch Pulleys for 25mm Wide Belt Ref. 25T5-
25 T5-10 25 T5-1225 T5-1425 T5-1525 T5-1625 T5-1825 T5-1925 T5-2025 T5-2225 T5-2425 T5-2525 T5-2625 T5-2725 T5-2825 T5-3025 T5-3225 T5-3625 T5-4025 T5-4225 T5-4425 T5-4825 T5-60
10121415161819202224252627283032364042444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
15.9219.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
4446666668888888888888
578
10111314151517171719202224242626293242
15.018.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
19.523.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
36363636363636363636363636363636363636363636
8111316182022232426262630323438384040455065
.025
.032
.038
.042
.052
.063
.072
.078
.082
.110
.117
.121
.123
.127
.152
.177
.232
.278
.296
.327
.402
.617
30303030303030303030303030303030303030303030
All pulleys machined fromaluminium for low weightand inertia, and fitted asindicated with steel flanges.All dimensions in mm
Type 0F
dp do
F
d MA
L
Type 1
d Mdp do
F
L
L
F
d MA dp do
Type 1F
40
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:53 Page 40
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41
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44
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Pulleys for Metric PolyurethaneT10 Belts
CatalogueNo.
No.Teeth
Z
PulleyType
Pitch CircleDia.dp
All pulleys machined fromaluminium for low weight andinertia, and fitted as indicatedwith steel flanges.All dimensions in mm
Pulley TypesThe Pulley types referred to in tables are as drawings below.Suffix ‘F’ indicates pulley hasflanges. Std. Pulleys can be reworkedto customers bore andkeywaying requirements.
Min.Bore
d
Max.Bore
d
Ouside Diameter
do
FlangeDia.
A
PulleyWidth
F
BoreLength
L
HubDia.M
Approx.Weight
kg
10mm Pitch Pulleys for 16mm Wide Belt Ref. 16T10
16 T10-1216 T10-1416 T10-1516 T10-1616 T10-1816 T10-1916 T10-2016 T10-2216 T10-2416 T10-2516 T10-2616 T10-2716 T10-2816 T10-3016 T10-3216 T10-3616 T10-4016 T10-4416 T10-4816 T10-60
1214151618192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
38.2044.5647.7550.9357.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
68888888888888
101010101616
4248515460666675838387919397
106120131_
__
2121212121212121212121212121212121212121
1821212326283034383939393939424552576272
36.342.745.949.155.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
3131313131313131313131313131313131313131
28323235404446525860606060606570808895
110
0.080.110.120.140.170.190.210.260.290.310.360.370.400.440.490.630.771.001.091.70
10mm Pitch Pulleys for 16mm Wide Belt Ref. 16T10
10mm Pitch Pulleys for 25mm Wide Belt Ref. 25T10
25 T10-1225 T10-1425 T10-1525 T10-1625 T10-1825 T10-1925 T10-2025 T10-2225 T10-2425 T10-2525 T10-2625 T10-2725 T10-2825 T10-3025 T10-3225 T10-3625 T10-4025 T10-4425 T10-4825 T10-60
1214151618192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
38.2044.5647.7550.9357.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
68888888888888
101010101616
4248515460666675838387919397
106120131_
__
3030303030303030303030303030303030303030
1821212326283034383939393939424552576272
36.342.745.949.155.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
28323235404446525860606060606570808895
110
0.100.140.160.180.230.250.280.340.390.420.480.540.550.640.690.871.071.351.522.34
4040404040404040404040404040404040404040
10mm Pitch Pulleys for 32mm Wide Belt Ref. 32T10-
32 T10-1832 T10-1932 T10-2032 T10-2232 T10-2432 T10-2532 T10-2632 T10-2732 T10-2832 T10-3032 T10-3232 T10-3632 T10-4032 T10-4432 T10-4832 T10-60
18192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F111
57.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
60666675838387919397
106120131_
__
55.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
47474747474747474747474747474747
10101212121212121212121616161616
26283034383939393939424552576272
37373737373737373737373737373737
404446525860606060606570808895
110
0.260.280.320.400.480.530.570.600.640.740.851.071.321.611.933.00
10mm Pitch Pulleys for 32mm Wide Belt Ref. 32T10-
10mm Pitch Pulleys for 50mm Wide Belt Ref. 50T10
50 T10-1850 T10-1950 T10-2050 T10-2250 T10-2450 T10-2550 T10-2650 T10-2750 T10-2850 T10-3050 T10-3250 T10-3650 T10-4050 T10-4450 T10-4850 T10-60
18192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F111
57.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
60666675838387919397
106120131_
__
55.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
10101212121212121212121616161616
26283034383939393939424552576272
56565656565656565656565656565656
404446525860606060606570808895
110
0.430.470.520.570.740.770.820.910.961.171.301.642.002.362.834.37
66666666666666666666666666666666
Pulley InstallationCorrect and accurate installation of Timing Drives is essential. Pulley alignment and shaft parallelism is very important as misalignment ofthe drive will cause unequal loading across the belt width and edge wear of belt on flanges. Pulley alignment can be checked by placing astraight edge against the outside edge of the pulleys and adjusting so contact made evenly across both pulleys.The shafts should be located within a rigid framework, as any distortion under load could result in a reduction of centre distance whichwill cause jumping of belt on pulley teeth. If idlers are used they must be locked firmly into position after correct belt tensioning. Refer to page 10 for additional information on drive installation.
Type 1
d Mdp do
F
L
L
F
d MA dp do
Type 1F
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:54 Page 41
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l +
44
1
21
3
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0
15
5 F
ax
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44
1
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3
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9 E
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ale
s@
cr
os
sm
or
se
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Type 1
d Mdp do
F
L
L
F
d MA dp doType 1F
Approx.Weight
kgCatalogue
No.
Pulleys for Metric PolyurethaneAT 5 Belts
Pulley TypesThe Pulley types referred to in tables are as drawings below.Suffix ‘F’ indicates pulley hasflanges. Std. Pulleys can be reworkedto customers bore andkeywaying requirement.
No.Teeth
ZPulleyType
PitchCircle
Diameterdp
Min.Bore
d
MaxBore
d
OutsideDiameter
do
FlangeDiameter
A
PulleyWidth
F
BoreLength
L
HubDiameter
M
5mm Pitch Pulleys for 10mm Wide Belt Ref. 10AT 5
10AT5-1210AT5-1410AT5-1510AT5-1610AT5-1810AT5-1910AT5-2010AT5-2210AT5-2410AT5-2510AT5-2610AT5-2710AT5-2810AT5-3010AT5-3210AT5-3610AT5-4010AT5-4210AT5-4410AT5-4810AT5-60
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
446666666668888888888
23.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
All pulleys machined fromaluminium for low weightand inertia, and fitted asindicated with steel flanges.All dimensions in mm
AT Series Timing PulleysDesigned to complete the power Transmission package for theenhanced power ‘AT’ series belts, are the Cross pilot bore stockpulleys for AT5 and AT10 belt drives. The ‘AT’ series belts provide increased power capacity in aPolyurethane belt by increasing the belt tooth size and also thetension members.The increased tooth width of AT series belts increases both thestrength and stiffness of the tooth improving meshing with thepulley’s also the longer flat surface of the teeth enables bettertransmission of radial loads.
Higher strength tension members improve pitch accuracyalong with increasing the tensile strength of the belt, whichcombined with the stronger teeth enables increase in powertransmitted by approx 50% over the ‘T’ series belts.The ‘AT’ belt design provides improved accuracy in linear drives, with reduced backlash when using standard pulleys.The longer tooth reduces polygon effect which combined withthe opportunity to reduce belt width enables reduction innoise levels.Cross offer AT5 and AT10 pulleys as standard, but can alsomanufacture to customers design including AT20.
121415161819202224252627283032364042444860
19.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
79
10111314151517171719202223242626293242
18.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
151515151515151515151515151515151515151515
212121212121212121212121212121212121212121
111416182022232426262630323436384040455065
.016
.019
.021
.025
.031
.036
.038
.046
.054
.058
.062
.064
.071
.075
.088
.114
.138
.153
.170
.200
.308
5mm Pitch Pulleys for 16mm Wide Belt Ref. 16AT 5
16AT5-1216AT5-1416AT5-1516AT5-1616AT5-1816AT5-1916AT5-2016AT5-2216AT5-2416AT5-2516AT5-2616AT5-2716AT5-2816AT5-3016AT5-3216AT5-3616AT5-4016AT5-4216AT5-4416AT5-4816AT5-60
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
446666666668888888888
23.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
121415161819202224252627283032364042444860
19.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
79
10111314151517171719202223242626293242
18.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
272727272727272727272727272727272727272727
111416182022232426262630323436384040455065
.022
.027
.030
.036
.044
.050
.054
.055
.077
.082
.086
.092
.094
.106
.124
.160
.195
.206
.230
.282
.432
212121212121212121212121212121212121212121
5mm Pitch Pulleys for 25mm Wide Belt Ref. 25AT 5
25AT5-1225AT5-1425AT5-1525AT5-1625AT5-1825AT5-1925AT5-2025AT5-2225AT5-2425AT5-2525AT5-2625AT5-2725AT5-2825AT5-3025AT5-3225AT5-3625AT5-4025AT5-4225AT5-4425AT5-4825AT5-60
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
446666668888888888888
23.025.028.032.032.036.036.038.042.044.044.048.048.051.054.064.066.570.0_
__
121415161819202224252627283032364042444860
19.1022.2823.8725.4628.6530.2431.8335.0138.2039.7941.3842.9744.5647.7550.9357.3063.6666.8470.0376.3995.49
79
10111314151517171719202223242626293242
18.221.423.024.627.829.431.034.137.438.940.642.243.746.950.156.462.866.069.275.594.6
363636363636363636363636363636363636363636
111416182022232426262630323436384040455065
.032
.038
.042
.052
.063
.072
.078
.082
.110
.117
.121
.123
.127
.152
.177
.232
.278
.296
.327
.402
.617
303030303030303030303030303030303030303030
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Pulleys for Metric PolyurethaneAT10 Belts
CatalogueNo.
No.Teeth
Z
PulleyType
Pitch CircleDia.dp
All pulleys machined fromaluminium for low weight andinertia, and fitted as indicatedwith steel flanges.All dimensions in mm
Pulley TypesThe Pulley types referred to in tables are as drawings below.Suffix ‘F’ indicates pulley hasflanges. Std. Pulleys can be reworkedto customers bore andkeywaying requirements.
Min.Bore
d
Max.Bore
d
Ouside Diameter
do
FlangeDia.
A
PulleyWidth
F
BoreLength
L
HubDia.M
Approx.Weight
kg
10mm Pitch Pulleys for 16mm Wide Belt Ref. 16T10
16 AT10-1516 AT10-1616 AT10-1816 AT10-1916 AT10-2016 AT10-2216 AT10-2416 AT10-2516 AT10-2616 AT10-2716 AT10-2816 AT10-3016 AT10-3216 AT10-3616 AT10-4016 AT10-4416 AT10-4816 AT10-60
151618192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
47.7550.9357.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
888888888888
101010101616
515460666675838387919397
106120135_
__
212121212121212121212121212121212121
202326283034383939393939424552576272
45.949.155.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
313131313131313131313131313131313131
3135404446525860606060606570808895
110
0.120.140.170.190.210.260.290.310.360.370.400.440.490.630.771.001.091.70
10mm Pitch Pulleys for 16mm Wide Belt Ref. 16AT10
10mm Pitch Pulleys for 25mm Wide Belt Ref. 25AT10
151618192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F1F1F111
47.7550.9357.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
888888888888
101010101616
515460666675838387919397
106120135_
__
303030303030303030303030303030303030
212326283034383939393939424552576272
45.949.155.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
3235404446525860606060606570808895
110
0.160.180.230.250.280.340.390.420.480.540.550.640.690.871.071.351.522.34
404040404040404040404040404040404040
18192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F111
57.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
60666675838387919397
106120135_
__
55.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
47474747474747474747474747474747
10101212121212121212121616161616
26283034383939393939424552576272
37373737373737373737373737373737
404446525860606060606570808895
110
0.260.280.320.400.480.530.570.600.640.740.851.071.321.611.933.00
10mm Pitch Pulleys for 32mm Wide Belt Ref. 32AT10-
10mm Pitch Pulleys for 50mm Wide Belt Ref. 50AT10
18192022242526272830323640444860
1F1F1F1F1F1F1F1F1F1F1F1F1F111
57.3060.4863.6670.0376.3979.5882.7685.9489.1395.49
101.86114.59127.32140.06152.79190.99
60666675838387919397
106120135_
__
55.458.661.868.274.577.780.984.187.293.6
100.0112.7125.4138.2150.9189.1
10101212121212121212121616161616
26283034383939393939424552576272
56565656565656565656565656565656
404446525860606060606570808895
110
0.430.470.520.570.740.770.820.910.961.171.301.642.002.362.834.37
66666666666666666666666666666666
Pulley InstallationCorrect and accurate installation of Timing Drives is essential. Pulley alignment and shaft parallelism is very important as misalignment ofthe drive will cause unequal loading across the belt width and edge wear of belt on flanges. Pulley alignment can be checked by placing astraight edge against the outside edge of the pulleys and adjusting so contact made evenly across both pulleys.The shafts should be located within a rigid framework, as any distortion under load could result in a reduction of centre distance whichwill cause jumping of belt on pulley teeth. If idlers are used they must be locked firmly into position after correct belt tensioning. Refer to page 10 for additional information on drive installation.
25 AT10-1525 AT10-1625 AT10-1825 AT10-1925 AT10-2025 AT10-2225 AT10-2425 AT10-2525 AT10-2625 AT10-2725 AT10-2825 AT10-3025 AT10-3225 AT10-3625 AT10-4025 AT10-4425 AT10-4825 AT10-60
32 AT10-1832 AT10-1932 AT10-2032 AT10-2232 AT10-2432 AT10-2532 AT10-2632 AT10-2732 AT10-2832 AT10-3032 AT10-3232 AT10-3632 AT10-4032 AT10-4432 AT10-4832 AT10-60
50 AT10-1850 AT10-1950 AT10-2050 AT10-2250 AT10-2450 AT10-2550 AT10-2650 AT10-2750 AT10-2850 AT10-3050 AT10-3250 AT10-3650 AT10-4050 AT10-4450 AT10-4850 AT10-60
Type 1
d Mdp do
F
L
L
F
d MA dp do
Type 1F
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Special Belt BackingsTo assist in the movement of many products there is a range ofspecialist materials which can be bonded to the back of all sizesof Polyurethane Belts. Thickness up to 15mm enable profilingof the backing to transport special shapes, such as drawingtube from extrusion process. Materials available with coefficient of friction varying for 0.3µto 1.3µ and hardness 70° ShA down below 35° ShA, includingopen cellular materials which accomodate profile changes.Materials include polyurethane in various grades and hardnessvalues, Linatex, Neoprene for haul - off applications, PVC,Natural Rubbers and Silicon Rubber in flat finish on honeycomb construction for higher grip.Materials, profiles and constructions are available to cater foralmost every application.
Open Ended and SpecialConstruction Polyurethane Timing Belts
Open ended belts are manufactured in a continous processwith the steel tension members running parallel to the edges.The belts are manufactured in standard 50 metre rolls, butlonger lengths are available to request. The open ended beltsare normally used for reciprocating linear motions such asrobotics.The open ended belts can also be used to produce long lengthendless belts which are produced using an automated, precision cut vee finger joint which is weld joined. Thestrength of the join is by the polyurethane, but due to the largecontact area loads uo to 50% of the belt capacity can still betransmitted, whilst excellent flexibility and smooth running areretained, The joined belts are mainly used on Conveyor applications, and the addition of welded attachments and special backing materials extends application opportunities.
Linear DrivesSyncronised movements and alignment of goodsis an essential elementin automated handlingsystems.
Conveyor SystemsFor conveyor applications the belts can be used in standardwelded endless form to transport items in a horizontal plane,or for inclined applications or where positioning is required awide range of polyurethane profiles is available forpermanent welding to the timing belt back surface. Profilescan also be developed for specific applications. Flighted beltsensure positive movement of products with accurate locationproviding an option to attachment Roller Chain.
T5T10AT5AT10AT20XLLH
Belt Type Pitch p H1 H2 K B°
5.0010.005.00
10.0020.005.089.53
12.70
2.204.502.705.008.002.253.504.30
1.202.501.202.505.001.251.902.30
1.803.502.505.00
10.001.353.204.40
4040505050504040
T5T10AT5AT10AT20XLLH
Belt Type Pitch p H1 H2 K B°
5.0010.005.00
10.0020.005.089.53
12.70
2.204.502.705.008.002.253.504.30
1.202.501.202.505.001.251.902.30
1.803.502.505.00
10.001.353.204.40
4040505050504040
T5
T10
AT5
AT10
AT20
Belt Type 6
Standard Widths Metric Belts - width in mm10 16 25 32 50 75 100 150 200
•
•
•
•
••••
•••••
•••••
•••••
••••
•
••
•• •
XL
L
H
Belt Type 025
Standard Widths Imperial Belts - width in 0.01”031 037 050 075 100 150 200
•••
• • ••
•••
•••
•• •
Standard Tooth Forms available
Conveying SystemsPrecise control and synchronisation inthe transportationand positioningof goods.
Consult Cross and Morse for the best solution to your conveying application
H1
P
ß°
H2
K
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f
f
f
f
f
f
f
6
810
XL
Timing Belt Clamping Platesand Timing Bars
Clamping Plates for HTD Belts
Timing Belt Clamping PlatesFor the simple retention of open ended timing belts used on conveyingor reciprocating drives, a standard range of clamping plates is availablefor all the heavier pitch belts. Manufactured in aluminium, these clamping plates provide accurate, location of the belts.
Belt PitchSize
F d B A S
L (Belt Width Code)
20 30 40 50 55 85 115 170
C
8M
14M
8
10
9
11
5
9
66
116
15
22
45 55
71
75
86
110
116 146 201
Clamping Plates for Classical Series Belts
Belt PitchSize
F d B A S
L (Belt Width Code)
025
C
L
H
5.5
911
3.5
59
42.5
76.6106.9
8
1522
037 050 075
25.5 28.5
3945
4551
51.557.5
6
8
Clamping Plates for ‘T’ Series Belts
Belt PitchSize
F d B A S
L (Belt Width Code)
10
5.5
9
3.2
5
41.8
80
8
15
16 25 32 50
T5
T10
35
41
29
57 75
6
8
Clamping Plates for ‘AT’ Series Belts
Belt PitchSize
F d B A S
L (Belt Width Code)
10
C
5.5
9
3.2
5
41.8
80
8
15
16 25 32 50
AT5
AT10
35
41
29 44
50 57 75
Timing BarsFor extra wide belt drives and to manufacture special pulleys. Available intooth sizes indicated in following table of standard bar sizes.
No.Teeth XL L T2.5 T5 T10
No.Teeth
Belt Type Belt Type
XL L T2.5 T5 T10
ccccddeeeeeffffffffffff
eefffffffffffff__f__f
_______________________
_
1011121314151617181920212223242526272829303233
__
a
aaaaaaabbbc
c
cccccc
_
_
_
_
cccceeeeeeffffffffffff_
eeeefffffffffff
f
f
ff
_
_
34353637383940414243444546485056606570728090100
fff
fffffff
f
ff
f
___
__
_
__
_
cdd
e
e
e
ee
ef
ffff
ff
_
_
_
_
_
_
_
_
_
fffff
f
f
fffff
f
ffff
_
_
_
_
__
_
__
_
__
_
_
All sizes indicated available in aluminium.XL and L sizes also available in steel.
Bar Size I L
50
90
125
132
140
160
75
120
140
140
140
160
C
44
50
_
_
_
_
_a
b
c
d
e
f
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New Platinum Belts fromCross+MorseThe new Platinum is a rubber based timing belt, which solvesthe problems related to steel and aramide cords, thanks to thedevelopment and usage of its cutting edge "Dual Core" hybridcord technology. Platinum reach the highest level ofperformances incorporating this cord in a new rubber matrixand covering the teeth with a special and unique heavy fabric.
FeaturesThanks to the special combination of materials used, Platinumis a reliable, lower maintenance and economical alternative todrive systems with chains and gears; it's particularlyrecommended for efficient, compact drives with high or pulsetorque loads, offering:l Increased basic power capacity by up to 40% compared to
the current RPP Gold;l Use of existing RPP® pulleys, maintaining a full functional
interchange with other deep pulley profile systems, likeHTD, etc.
l Allows existing drives to be upgraded without the necessityto replace the pulleys, just the belt itself.
l Reduction of noise by reduced belt widths due to the higherperformance rating of the system. Under the sametransmission conditions, Platinum has the same noise levelof RPP Gold;
l Low noise characteristics compared to drive systems usingpolyurethane, steel etc. due to the rubber matrix and itsteeth with the parabolic profile shape, recognised as thequietest system on the market
l A wide, continuous range of possible operating temperature,like no other system, which makes Platinum the onlysolution for extreme working conditions.
The Belt BodyAn innovative design and blend of HNBR elastomers, uniquelycross-linked to increase teeth rigidity and shear resistance, upto +25% in comparison to Gold belts.Despite the high levels of rigidity and hardness, thiscompound guarantees an exceptional resistance to flex fatigue,preventing the appearance of cracks when working with verysmall pulleys.
Tests made have showed an incredible improvement in the flexfatigue resistance up to 10 times more than the previous Goldversion, running on the smallest pulley diameters under thesame load conditions.
Furthermore this compound is formulated to considerablyresist the effects of mineral oils (test conditions 22h at 100°C inASTM3 oil; -25% less absorption then Gold), offering anincredible wide range of working temperatures: from -35° C to+ 115° C.
Tension MembersThe tensile member is made out of the "Dual Core" hybrid cordtechnology and it constitutes the load carrying elements insidethe New Platinum belt.The "Dual Core" technology gives excellent characteristics tothis cord, which gives to Platinum extreme dimension stabilityunder static and dynamic tensions, joined with a superior flexfatigue resistance.These performances can eliminate any kind of re-tensioningprocedure, providing a real maintenance-free operation andguaranteeing always a perfect tooth meshing for long lastingservice with reduction of abrasion, vibrations and noise.
The higher elastic modulus of Platinum, on average 25% morerigid than Gold, and its superior flexibility, allows consequentlymore compact drives and durability.
Tooth Facing FabricA hard-wearing polyamide fabric is bonded to the toothsurface, to improve torque carrying capacity and tooth shearresistance. Its special surface impregnation process confers self-lubricating properties, a lower friction and increased driveefficiency.
Platinum belts are manufactured in 8 and 14 mm pitches;standard sizes are listed in the following table.
TYPE Pitch length(mm)
No of Teeth TYPE Pitch length(mm)
No of Teeth
248 RPC8 248 31 994 RPC14 994 71
288 RPC8 288 36 1092 RPC14 1092 78
352 RPC8 352 44 1120 RPC14 1120 80
416 RPC8 416 52 1190 RPC14 1190 85
456 RPC8 456 57 1260 RPC14 1260 90
480 RPC8 480 60 1400 RPC14 1400 100
544 RPC8 544 68 1568 RPC14 1568 112
560 RPC8 560 70 1610 RPC14 1610 115
608 RPC8 608 76 1750 RPC14 1750 125
640 RPC8 640 80 1890 RPC14 1890 135
720 RPC8 720 90 1960 RPC14 1960 140
800 RPC8 800 100 2100 RPC14 2100 150
840 RPC8 840 105 2240 RPC14 2240 160
896 RPC8 896 112 2310 RPC14 2310 165
960 RPC8 960 120 2380 RPC14 2380 170
1000 RPC8 1000 125 2450 RPC14 2450 175
1040 RPC8 1040 130 2520 RPC14 2520 180
1120 RPC8 1120 140 2660 RPC14 2660 190
1200 RPC8 1200 150 2800 RPC14 2800 200
1224 RPC8 1224 153 3136 RPC14 3136 224
1280 RPC8 1280 160 3304 RPC14 3304 236
1440 RPC8 1440 180 3360 RPC14 3360 240
1600 RPC8 1600 200 3500 RPC14 3500 250
1760 RPC8 1760 220 3850 RPC14 3850 275
1792 RPC8 1792 224 3920 RPC14 3920 280
2000 RPC8 2000 250 4326 RPC14 4326 309
2200 RPC8 2200 275 4410 RPC14 4410 315
2240 RPC8 2240 280
2400 RPC8 2400 300
2520 RPC8 2520 315
2600 RPC8 2600 325
2800 RPC8 2800 350
2840 RPC8 2840 280
3048 RPC8 3048 361
3600 RPC8 3600 450
4000 RPC8 4000 500
4400 RPC8 4400 550
Platinum 8M Platinum 14M
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Eliminate low temperature
Increase the diameter of the pulleys oruse belts and pulleys of smaller pitch
Eliminate the moisture
Refer to factory for special belt
Use a higher capacity belt
Increase the diameter of the pulleys
Restore the initial centre distance andstrengthen the bearings
Causes of Premature Belt Failure
Number of teeth in mesh less than six
Excessive load
Timing Belt Trouble Shooting Guide
When a timing belt drive is correctly designed and installed - with proper consideration given to design factors for service conditions - premature failure should not occur. If problems are encountered the table below may help identify the cause and suitable corrective action. In addition to problems shown less apparent causes of drive failure may exist, such as excessive reversebending, sub-minimum diameter idler, etc; and for complete assurance in determining cause of failure and correct remedy it isalways advisable to consult a drive specialist.
Mode of Failure Probable Causes Corrective Action
Exposure to excessively high temperatures(over + 100°C) or oil contamination
Reduction of centre distance due tobearings not being firmly fixed
Apparent elongation of the belt
Reinstall the flanges properly
Align pulleys
Belt overriding the flanges Faulty installation of the flanges
Misalignment of pulleys
Excessive wear of pulley teeth Excessive overloading
Belt excessively taut
Pulley material insufficiently hard
Use a higher capacity drive
Reduce the centre distance
Harden the pulley surface
Abnormal wear of the belt:a) on the side of the tooth
Belt excessively taut
Excessive overloading
Incorrect contour or diameter of pulley
Excessive installation tension
Incorrect diameter of pulley
Incorrect contour or diameter of pulley
Misalignment or wrong setting of pulleys
Oscillation of the axes and/or thebearings
Flanges bent
Reduce centre distance
Use a wider belt
Replace pulley after checking
Reduce centre distance
Replace pulley after checking
Replace pulley after checking
Correct the positioning of the pulleys
Reinforce the bearing mountings
Replace flanges
Failure through traction or throughlaceration of the teeth, indicatingcorrosion of the tension member
Shearing of belt teeth
Rupture of tension member
Breaks or cracks in the topsurface of the belt
Exposure to excessively low temperatures(below - 25°C)
Softening of the top surface ofthe belt
Diameter of pulley too small
Excessive moisture
Acid or caustic atmosphere
Excessive load
Diameter of pulley below minimum
Drive excessively noisy Pulleys out of line
Excessive installation tension
Excessive load
Diameter of pulley below minimum
Air trapped in belt
Align pulleys
Reduce the centre distance
Use a higher capacity drive
Increase the diameter of the pulleys
Change to Metric Series belt drive
b) on the bottom of the tooth
c) at the tooth root
d) on the side of the belt
Eliminate the high temperature or reducethe amount of oil present
Increase the pulley diameters or usebelts and pulleys of smaller pitch
Use a higher capacity bel
47
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:54 Page 47
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Formulae and Conversion Factors
1. Motor Power (kw) P = T � n9550
2. Torque (Nm) T = 9550Pn
3. For Solid Cylinder Inertia (kg m2) I = md2
� 10-4 = � lqd4
� 10-6
800 32000
4. For Hollow Cylinder Inertia (kg m2) I = m(da2 � di2 ) � 10-4 = � lq (da4 � di4)
� 10-6
800 32000
5. Flywheel Inertia GD2 (kp m2) d 4 � I
6. Acceleration Torque (Nm) Ta = 0.105 It (n2 � n1)
ta
7. Total drive Torque (Nm) Tt = Ta + TL
alsoTt = KTs + TL
where K = IL + It
1 + K Id
8. Tooth & Belt/Chain drive speed m/Sec V =Z � p � n
60,000
9. Pull in Belt/chain (N) FL =P � 1000
V
10. Centrifugal Pull Belt/Chain FC = WV2
Useful formulae in Power Transmission Calculations
Whered = diameter - mm p = chain/belt pitch - mmda = outside diameter - mm P = Power - kwdi = inside diameter - mm q = density - kg/cm3
Fc = Centrifugal - Newtons ta = time acceleration - secsFL = Load (Power) Pull - Newtons T = Torque - NmI = Inertia - kgm2 Ta = Acceleration Torque - NmId = Inertia of Driver - kgm2 TL = Load Torque - NmIL = Inertia of Load - kgm2 Ts = Motor Starting Torque - NmIt = Total Inertia - kgm2 Tt = Total Torque - Nml = length - mm V = Velocity - m/Secm = mass - kg W = Weight - kg/mn = rotational speed - r.p.m. Z = No. Teeth in Pulleyn2 �n1 = change in speed - r.p.m.
Conversion Factors
LENGTH mm � 0.03937 = INCHES � 25.4 = mmMETRES � 3.2808 = FEET � 0.3048 = METRES
WEIGHT kg � 2.2046 = POUND f � 0.4536 = kg
FORCE N (Newton) � 0.2248 = POUND f � 4.4482 = NN (Newton) � 0.1019 = kg f � 9.807 = N
TORQUE Nm � 0.7376 = lb f ft � 1.356 = Nmkgfm � 9.8066 = Nm � 0.1019 = kgfm
POWER kW � 1.341 = HP � 0.7457 = kWkW � 1.3596 = PS � 0.7355 = kW
INERTIA kgm2 � 23.7304 = lb f ft2 � 0.04214 = kgcm2
kgcm2 � 10-4 = kg m2 � 10,000 = kgcm2
kgcm2 � 0.3417 = lb in2 � 2.9264 = kgcm2
GD2kpm � 0.25 = kg m2 � 4.0 = kpm
Timing Belt Catalogue_Cross + Morse 13/12/2010 17:55 Page 48
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Metric Standard Boresand Keyways
49
Imperial Keyway Dimensions to BS 46 Pt. 1 - 1958
Metric Keyway Dimensions to BS 4235 Pt. 1 - 1972
All dimensions in inches
Diameter of Shaft Key Keyway to Shaft Keyway in hub NominalKeyway
Over Up to Width Thickness Width Depth Width Depth radius
and Key Size W T Ws H Wh h& Key
including W X T Max. Min. Max. Min. Min. Max. Min Max. Min. Max. Min. Max.chamfer
1/4 1/2 1/8 x 1/8 0.127 0.125 0.127 0.125 0.124 0.125 0.072 0.078 0.125 0.126 0.060 0.066 0.010
1/2 3/4 3/16 x 3/16 0.190 0.188 0.190 0.188 0.187 0.188 0.107 0.113 0.188 0.189 0.088 0.094 0.010
3/4 1 1/4 x 1/4 0.252 0.250 0.252 0.250 0.249 0.250 0.142 0.148 0.250 0.251 0.115 0.121 0.010
1 1.1/4 5/16 x 1/4 0.314 0.312 0.253 0.250 0.311 0.312 0.146 0.152 0.312 0.313 0.112 0.118 0.010
1.1/4 1.1/2 3/8 x 1/4 0.377 0.375 0.253 0.250 0.374 0.375 0.150 0.156 0.375 0.376 0.108 0.114 0.010
1.1/2 1.3/4 7/16 x 5/16 0.440 0.438 0.315 0.312 0.437 0.438 0.186 0.192 0.438 0.439 0.135 0.141 0.020
1.3/4 2 1/2 x 5/16 0.502 0.500 0.315 0.312 0.499 0.500 0.190 0.196 0.500 0.501 0.131 0.137 0.020
2 2.1/2 5/8 x 7/16 0.627 0.625 0.441 0.438 0.624 0.625 0.260 0.266 0.625 0.626 0.185 0.191 0.020
2.1/2 3 3/4 x 1/2 0.752 0.750 0.503 0.500 0.749 0.750 0.299 0.305 0.750 0.751 0.209 0.215 0.020
3 3.1/2 7/8 x 5/8 0.877 0.875 0.629 0.625 0.874 0.875 0.370 0.376 0.875 0.876 0.264 0.270 0.062
3.1/2 4 1 x 3/4 1.003 1.000 0.754 0.750 0.999 1.000 0.441 0.447 1.000 1.001 0.318 0.324 0.062
4 5 1.1/4 x 7/8 1.253 1.250 0.879 0.875 1.248 1.250 0.518 0.524 1.250 1.252 0.366 0.372 0.062
5 6 1.1/2 x 1 1.504 1.500 1.006 1.000 1.498 1.500 0.599 0.605 1.500 1.502 0.412 0.418 0.062
6 7 1.3/4 x 1.1/4 1.754 1.750 1.256 1.250 1.748 1.750 0.740 0.746 1.750 1.752 0.526 0.532 0.125
7 8 2 x 1.3/8 2.005 2.000 1.381 1.375 1.998 2.000 0.818 0.824 2.000 2.002 0.573 0.579 0.125
8 9 2.1/4 x 1.1/2 2.255 2.250 1.506 1.500 2.248 2.250 0.897 0.905 2.250 2.252 0.619 0.627 0.125
9 10 2.1/2 x 1.5/8 2.505 2.500 1.631 1.625 2.498 2.500 0.975 0.983 2.500 2.502 0.666 0.674 0.187
10 11 2.3/4 x 1.7/8 2.755 2.750 1.881 1.875 2.748 2.750 1.114 1.122 2.750 2.752 0.777 0.785 0.187
11 12 3 x 2 3.006 3.000 2.008 2.000 2.998 3.000 1.195 1.203 3.000 3.002 0.823 0.831 0.187
Shaft Key Keyway
Diameter Width x Tolerances for class of fit width W depth
Thickness nominal normal fit tol. close fit shaft hubOver to WxT width shaft hub shaft& hub H hmm mm mm mm mm mm mm mm mm
6 8 2 x 2 2 -.004 + .012 -.006 1.2 + 0.1 1.0 + 0.1
8 10 3 x 3 3 -.029 -.012 -.031 1.8 + 0.1 1.4 + 0.1
10 12 4 x 4 4 0 +.015 -.012 2.5 + 0.1 1.8 + 0.
12 17 5 x 5 5 -.030 -.015 -.042 3.0 + 0.1 2.3 + 0.1
17 22 6 x 6 6 3.5 + 0.1 2.8 + 0.1
22 30 8 x 7 8 0 +.018 -.015 4.0 + 0.2 3.3 + 0.2
30 38 10 x 8 10 -.036 -.018 -.051 5.0 + 0.2 3.3 + 0.2
38 44 12 x 8 12 5.0 + 0.2 3.3 + 0.2
44 50 14 x 9 14 0 +.021 -.018 5.5 + 0.2 3.8 + 0.2
50 58 16 x 10 16 -.43 -.021 -.061 6.0 + 0.2 4.3 + 0.2
58 65 18 x 11 18 7.0 + 0.2 4.4 + 0.2
65 75 20 x 12 20 7.5 + 0.2 4.9 + 0.2
75 85 22 x 14 22 0 +.026 -.022 9.0 + 0.2 5.4 + 0.2
85 95 25 x 14 25 -.052 -.026 -.074 9.0 + 0.2 5.4 + 0.2
95 110 28 x 16 28 10.0 + 0.2 6.4 + 0.2
110 130 32 x 18 32 11.0 + 0.2 7.4 + 0.2
130 150 36 x 20 36 12.0 + 0.3 8.4 + 0.3
150 170 40 x 22 40 0 +.031 -.026 13.0 + 0.3 9.4 + 0.3
170 200 45 x 25 45 -.062 -.031 -.088 15.0 + 0.3 10.4 + 0.3
200 230 50 x 28 50 17.0 + 0.3 11.4 + 0.3
230 260 56 x 32 56 0 +.037 -.032 30.0 + 0.3 12.4 + 0.3
260 290 63 x 32 63 -.074 -.037 -.106 20.0 + 0.3 12.4 + 0.3
All keyways cut will be to normal fit tolerances to dimensions in above tables unless otherwise specified. Where hub diameters restrict size of key itis common practice to use shallow keys to conform to DIN 6885 Sheet 3.
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Power Transmission ProductsRoller Chain DrivesTiming Belt DrivesSilent Chain DrivesClamping ElementsOverload ClutchesTorque LimitersMounted BearingsStieber FreewheelsShaft CouplingsSprag ClutchesTensionersSprocketsPulleysGears
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