sw module 1 1.25 sw steel wormssw module 1、1.25 r s l n o p w2 bronze worm wheels & gray iron...
TRANSCRIPT
392 393
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Sp
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Hel
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Gea
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Rac
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P R
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& P
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Gea
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Gea
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Gea
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Gea
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Bev
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Oth
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You can download CAD data (DXF format) of KHK Products from the Web Catalog.
GE F
J
A B D’DC
L
① Worm Wheels are profile shifted to create the proper center distance.② The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see Page 358 for more details.③ If bore size is less than φ 4, the diameter tolerance is H8. If bore size is φ 5 or φ 6, and the hole length exceeds 3 times the diameter, the tolerance is also H8.
Steel WormsModule 1、1.25SW
R
S
N OL
P
W2
Bronze Worm Wheels & Gray Iron Worm WheelsModule 1、1.25BG・CG
Total length Set Screw Weight
(kg)Catalog No.
R Size S3232
M4M4
55
0.0430.043
SW1-R1SW1-R2
3737
M5M5
55
0.0850.085
SW1.25-R1SW1.25-R2
Catalog No. Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7(H8) M N O P Q Q'SW1-R1SW1-R2 m1 1
23°35'7°11'
RR
W2W2
6 H8
6 H8――
1616
1818
(20)(20)
――
――
SW1.25-R1SW1.25-R2 m1.25 1
23°25'6°50'
RR
W2W2
88
――
2121
23.523.5
(25)(25)
――
――
[Caution on Product Characteristics] ① For W2-shaped products, a set screw is included. When setting up the mating wheel, make sure no friction occurs within the set screw.② These worms produce axial thrust forces. See Page 362 for more details.
[Caution on Product Characteristics]
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modi-fications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
Steel Worms
SW
Bronze Worm Wheels & Gray Iron Worm Wheels
GE F
J
A B D’DC
H1
Specifications
Precision grade KHK W 001 grade 4
Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 20°
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
BG・CG
Specifications
Catalog No. BG CGPrecision grade KHK W 002 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 20°
Material CAC502(formerly JIS PBC2) FC200 **
Heat treatment ―Tooth hardness ―
* The precision grade of J Series products is equiva-lent to the value shown in the table.
** FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
NOTE 1 : Allowable torque based on worm speed (rpm)
JAllowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm
Series
Bore H7
Keyway Js9
Screw sizeCatalog No.
H1T
GE F
J
A B D’DC
L
H1K
BG1-20R1BG1-20R2BG1-30R1BG1-30R2BG1-40R1BG1-50R1
201030154050
202030304050
121211
3°35'7°11'3°35'7°11'3°35'3°35'
R H1
666688
161620202630
20.0520.1630.0730.2440.0850.1
222232324252
232333334353
10 10 20
181823232833
1.89 1.90 4.00 4.03 6.85
10.3
1.58 1.54 3.38 3.35 5.79 8.76
1.26 1.18 2.74 2.62 4.76 7.27
1.04 0.97 2.29 2.14 4.03 6.18
0.92 0.85 2.05 1.91 3.61 5.58
0.85 0.78 1.87 1.74 3.31 5.14
0.06~0.24
0.0430.0430.0890.0890.150.23
BG1.25-20R1BG1.25-20R2BG1.25-30R1BG1.25-30R2BG1.25-40R1BG1.25-50R1
201030154050
202030304050
121211
3°25'6°50'3°25'6°50'3°25'3°25'
666688
202025253040
25.0425.1837.5737.7750.0962.61
27.527.5404052.565
28.7528.7541.2541.2553.7566.25
11 9 20
232329.2529.2535.541.75
3.19 3.19 6.75 6.77
11.5 17.4
2.65 2.58 5.67 5.60 9.71
14.7
2.10 1.96 4.56 4.33 7.92
12.1
1.72 1.60 3.81 3.54 6.70
10.3
1.53 1.40 3.40 3.16 5.98 9.25
1.40 1.27 3.09 2.85 5.47 8.49
0.08~0.26
0.0700.0700.150.150.240.40
CG1-60R1CG1-80R1CG1-100R1CG1-120R1
6080
100120
6080
100120
1 3°35' 10
30354040
60.1280.16
100.2120.24
6282
102122
6383
103123
10 10 20
38485868
8.6914.721.930.5
7.3912.619.026.7
6.1410.516.022.5
5.249.11
13.919.6
4.788.30
12.718.0
4.397.72
11.916.7
0.06~0.24
0.250.430.660.91
Catalog No.Reduction
ratioNo. of teeth
Number of starts
Helix angleHand thread
Shape AH7 B C D D' E F G
BG1-20R1 J Bore H1T BG1-20R2 J Bore H1T BG1-30R1 J Bore H1T H1T BG1-30R2 J Bore H1T H1T BG1-40R1 J Bore H1T H1K H1K BG1-50R1 J Bore H1T H1K H1K H1K H1K H1K H1KBG1.25-20R1 J Bore H1T H1T BG1.25-20R2 J Bore H1T H1T BG1.25-30R1 J Bore H1T H1T H1K H1K BG1.25-30R2 J Bore H1T H1T H1K H1K BG1.25-40R1 J Bore H1T H1K H1K H1K H1K H1K H1K BG1.25-50R1 J Bore H1T H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1-60R1 J Bore H1K H1K H1K H1K H1K H1KCG1-80R1 J Bore H1K H1K H1K H1K H1K H1K H1K H1KCG1-100R1 J Bore H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1-120R1 J Bore H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K
6 8 10 12 14 15 16 17 18 19 20 22 ― 4 × 1.8 5 × 2.3 6 × 2.8
M4 M5 M4 M5
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Certain products which would otherwise have a very long tapped hole are counterbored to reduce the length of the tap.⑤ For products having a tapped hole, a set screw is included.⑥ When using H1T set screws for fastening gears to a shaft, only use this method for light loads. For secure fastening,
please use dowel pins in combination.
[Caution on J series]
To order J Series products, please specify; Catalog No. + J + BORE* The product shapes of J Series items are identified by background color.
L = Half of hub length (F) L = Half of hub length (F)
AH7 Bore
B Hub dia.
C Pitch dia.
D Throat dia.
D' Outside dia.
E Face width
F Hub width
G Total length
(H) Web thickness
( I ) Web O.D.
J Mounting distance
394 395
Sp
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Hel
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Gea
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Rac
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& P
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Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
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Gea
r P
airs
Bev
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earb
oxes
Oth
erP
rod
ucts
Sp
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ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
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& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
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Oth
erP
rod
ucts
You can download CAD data (DXF format) of KHK Products from the Web Catalog.
Steel WormsModule 1.5SW
R
P Q
L M N O
W1
Bronze Worm Wheels & Gray Iron Worm WheelsModule 1.5BG・CG
Total length Keyway Set Screw Weight
(kg)Catalog No.
● : J Series (Available-on-request)R Width×Depth Size S
40――
4 x 1.8
―M5M4
―55
0.120.120.11
SW1.5-R1
•SW1.5-R1J8
•SW1.5-R1J10
40――
4 x 1.8
―M5M4
―55
0.120.120.11
SW1.5-R2
•SW1.5-R2J8
•SW1.5-R2J10
Catalog No.● : J Series (Available-on-request)
Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW1.5-R1
•SW1.5-R1J8
•SW1.5-R1J10m1.5
1 3°26' RW1W1TW1K
88
1020 25 28 30 10 ―
SW1.5-R2
•SW1.5-R2J8
•SW1.5-R2J102 6°54' R
W1W1TW1K
88
1020 25 28 30 10 ―
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or second-ary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
[Caution on Product Characteristics] ① These worms produce axial thrust forces. See Page 362 for more details.
[Caution on Product Characteristics] ① Worm Wheels are profile shifted to create the proper center distance.② The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see Page 358 for more details.
Series Steel Worms
SW
R
P Q
L M N O
S
W1T
R
P Q
L M N O
S
W1K
Bronze Worm Wheels & Gray Iron Worm Wheels
Specifications
Precision grade KHK W 001 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 20°
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
* The precision grade of J Series products is equivalent to the value shown in the table.
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth con-tact causing abrasion of the wheel.
[Caution on J series] ① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.
BG・CG
Bore H7
Keyway Js9
Screw sizeCatalog No.
8 10 12 14 15 16 17 18 19 20 22 25 28 30 ― 4 × 1.8 5 × 2.3 6 × 2.8 8 × 3.3
M5 M4 M5 M6BG1.5-20R1BG1.5-20R2BG1.5-30R1BG1.5-30R2BG1.5-40R1BG1.5-50R1
201030154050
202030304050
121211
3°26'6°54'3°26'6°54'3°26'3°26'
R H1
88
10101212
222230303040
30.0530.2245.0845.3360.1175.13
333348486378
34.534.549.549.564.579.5
121212121214
10
222222222224
27.527.5353542.550
4.76 4.75
10.1 10.1 17.2 30.4
3.96 3.85 8.47 8.37
14.5 25.6
3.10 2.89 6.72 6.40
11.7 20.8
2.56 2.38 5.67 5.26 9.96
17.8
2.27 2.08 5.03 4.67 8.86
16.0
2.06 1.87 4.55 4.20 8.04
14.60.08~0.26
0.100.100.220.220.350.65
CG1.5-30R1CG1.5-40R1CG1.5-50R1CG1.5-60R1CG1.5-80R1CG1.5-100R1
3040506080
100
3040506080
100
1 3°26'
101212121515
303040405050
45.0860.1175.1390.16
120.22150.27
48637893
123153
49.564.579.594.5
124.5154.5
121214141414
222224242424
3542.55057.572.587.5
6.0410.318.225.543.164.4
5.088.71
15.421.636.855.6
4.037.01
12.517.630.145.8
3.405.98
10.715.126.340.1
3.025.319.59
13.723.836.4
2.734.838.74
12.421.933.6
0.180.280.530.731.281.93
GE F
J
A B D’DC
L
GE F
J
A B D’DC
AH7 Bore
B Hub dia.
C Pitch dia.
D Throat dia.
D' Outside dia.
E Face width
F Hub width
G Total length
(H) Web thickness
( I ) Web O.D.
J Mounting distance
Specifications
Catalog No. BG CGPrecision grade KHK W 002 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 20°
Material CAC502(formerly JIS PBC2) FC200 **
Heat treatment ―Tooth hardness ―
* The precision grade of J Series products is equiva-lent to the value shown in the table.
** FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
Series
H1T
GE F
J
A B D’DC
L
H1K
NOTE 1 : Allowable torque based on worm spee (rpm)
JAllowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpmCatalog No.
Reduction ratio
No. of teeth
Number of starts
Helix angleHand thread
Shape AH7 B C D D' E F G
BG1.5-20R1 J BORE H1T H1K BG1.5-20R2 J BORE H1T H1K BG1.5-30R1 J BORE H1K H1K H1K H1K H1K H1K BG1.5-30R2 J BORE H1K H1K H1K H1K H1K H1K BG1.5-40R1 J BORE H1K H1K H1K H1K H1K BG1.5-50R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1.5-30R1 J BORE H1K H1K H1K H1K H1K H1K CG1.5-40R1 J BORE H1K H1K H1K H1K H1K CG1.5-50R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1.5-60R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1.5-80R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K CG1.5-100R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1K
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Certain products which would otherwise have a very long tapped hole are counterbored to reduce the length of the tap.⑤ For products having a tapped hole, a set screw is included.⑥ When using H1T set screws for fastening gears to a shaft, only use this method for applications with the usage for light
loads. For secure fastening, please use dowel pins in combination.
[Caution on J series]
H1
To order J Series products, please specify; Catalog No. + J + BORE* The product shapes of J Series items are identified by background color.
L = 5mm L = 5mm
396 397
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Hel
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& P
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Gea
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Gea
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Gea
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Bev
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Oth
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rod
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Sp
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ears
Hel
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Gea
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alG
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Rac
ksC
P R
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& P
inio
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Gea
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Gea
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Gea
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Gea
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Bev
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BG2-20R1BG2-20R2
2010
20
12
3°42'7°25'
RH1
12
33
40.0840.34
44 46
22 13 35
― ― 35.5
12.3 12.3
10.2 10.0
8.00 7.51
6.59 6.15
5.78 5.32
5.25 4.80
0.10~0.28
0.33BG2-20L1BG2-20L2
2010
12
3°42'7°25'
L40.0840.34
12.3 12.3
10.2 10.0
8.00 7.51
6.59 6.15
5.78 5.32
5.25 4.80
CG2-20R1CG2-20R2CG2-30R1CG2-30R2CG2-40R1
2010301540
2020303040
12121
3°42'7°25'3°42'7°25'3°42' R
H1
3333404045
40.0840.3460.1360.5180.17
4444646484
4646666686
― ―
35.535.545.545.555.5
7.387.40
15.615.726.7
6.156.00
13.113.122.5
4.804.51
10.49.96
18.1
3.953.698.748.15
15.4
3.473.197.707.18
13.55
3.152.886.966.45
12.3
0.27 0.270.570.570.96
CG2-50R1CG2-50R2CG2-60R1
502560
505060
121
3°42'7°25'3°42'
HB484860
100.21100.84120.25
104104124
106106126
(7)(88)(88)
(108)
65.565.575.5
40.340.756.4
34.134.047.9
27.626.938.9
23.622.433.3
21.019.629.9
19.117.827.2
1.011.011.44
CG2-20L1CG2-20L2CG2-30L1CG2-30L2CG2-40L1
2010301540
2020303040
12121
3°42'7°25'3°42'7°25'3°42' L
H1
3333404045
40.0840.3460.1360.5180.17
4444646484
4646666686
― ―
35.535.545.545.555.5
7.387.40
15.615.726.7
6.156.00
13.113.122.5
4.804.51
10.49.96
18.1
3.953.698.748.15
15.4
3.473.197.707.18
13.55
3.152.886.966.45
12.3
0.270.270.570.570.96
CG2-50L1CG2-50L2CG2-60L1
502560
505060
121
3°42'7°25'3°42'
HB484860
100.21100.84120.25
104104124
106106126
(7)(88)(88)
(108)
65.565.575.5
40.340.756.4
34.134.047.9
27.626.938.9
23.622.433.3
21.019.629.9
19.117.827.2
1.011.011.44
Steel WormsModule 2SW
R
P Q
L M N O
W1
Bronze Worm Wheels & Gray Iron Worm WheelsModule 2BG・CG
Catalog No.● : J Series (Available-on-request)
Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW2-R1
•SW2-R1J12
•SW2-R1J14
m2
1 3°42' RW1W1KW1K
121214
25 31 35 32 14 ―
SW2-R2
•SW2-R2J12
•SW2-R2J142 7°25' R
W1W1KW1K
121214
25 31 35 32 14 ―
SW2-L1
•SW2-L1J12
•SW2-L1J141 3°42' L
W1W1KW1K
121214
25 31 35 32 14 ―
SW2-L2
•SW2-L2J12
•SW2-L2J142 7°25' L
W1W1KW1K
121214
25 31 35 32 14 ―
* For [Caution on J Series], please see Page 395.* Please see Page 394 for Cautions on Product Characteristics and Cautions on Performing Secondary Operations.
Series Steel Worms
SW
R
P Q
L M N O
S
W1K
Total length Keyway Set Screw Weight
(kg)Catalog No.
● : J Series (Available-on-request)R Width×Depth Size S
46―
4 x 1.85 x 2.3
―M4M4
―77
0.200.200.18
SW2-R1
•SW2-R1J12
•SW2-R1J14
46―
4 x 1.85 x 2.3
―M4M4
―77
0.200.200.18
SW2-R2
•SW2-R2J12
•SW2-R2J14
46―
4 x 1.85 x 2.3
―M4M4
―77
0.200.200.18
SW2-L1
•SW2-L1J12
•SW2-L1J14
46―
4 x 1.85 x 2.3
―M4M4
―77
0.200.200.18
SW2-L2
•SW2-L2J12
•SW2-L2J14
Bronze Worm Wheels & Gray Iron Worm Wheels
Specifications
Precision grade KHK W 001 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 14° 30'
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
* The precision grade of J Series products is equivalent to the value shown in the table.
[Caution on Product Characteristics] ① These worms produce axial thrust forces. See Page 362 for more details.
[Caution on Secondary Operations]
① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifi-cations and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pres-sure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
[Caution on J series]
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.
BG・CG
* *CS has a sand mold casting finish.
GE F
J
A B D’DC A B C D D’
( I )
J
GE F
(H)
CS
CS
HB
AH7 Bore
B Hub dia.
C Pitch dia.
D Throat dia.
D' Outside dia.
E Face width
F Hub width
G Length
(H) Web thickness
( I ) Web O.D.
J Mounting distance
Specifications
Catalog No. BG CGPrecision grade KHK W 002 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 14° 30'
Material CAC502(formerly JIS PBC2) FC200 **
Heat treatment ―Tooth hardness ―
Series
GE F
J
A B D’DC
L
H1K
A B C D D’
( I )
J
GE F
(H)
CS
CS
L
HBKH1
(H)( I ) JAllowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpmCatalog No. Reduc-
tion ratioNo. of teeth
Number of starts
Helixangle
Handthread
Shape AH7 B C D D' E F G
Bore H7
Keyway Js9
Screw sizeCatalog No.BG2-20R1 J BORE H1K H1K H1K H1K H1K BG2-20R2 J BORE H1K H1K H1K H1K H1K BG2-20L1 J BORE H1K H1K H1K H1K H1K BG2-20L2 J BORE H1K H1K H1K H1K H1K CG2-20R1 J BORE H1K H1K H1K H1K H1KCG2-20R2 J BORE H1K H1K H1K H1K H1KCG2-30R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-30R2 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-40R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-50R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2-50R2 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2-60R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2-20L1 J BORE H1K H1K H1K H1K H1KCG2-20L2 J BORE H1K H1K H1K H1K H1KCG2-30L1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-30L2 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-40L1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2-50L1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2-50L2 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2-60L1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK
12 14 15 16 17 18 19 20 22 25 28 30 32 35 4 × 1.8 5 × 2.3 6 × 2.8 8 × 3.3 10 × 3.3
M4 M5 M6 M8
* The precision grade of J Series products is equivalent to the value shown in the table.
** FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
NOTE 1 : Allowable torque based on worm speed (rpm)
To order J Series products, please specify; Catalog No. + J + BORE* The product shapes of J Series items are identified by background color.
L = 6.5mm L = 6.5mm
398 399
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
BG2.5-20R1BG2.5-20R2
2010
20
12
3°52'7°46'
RH1 12 35
50.1150.46
55 57.5
22 14 36
― ― 43.5
21.5 21.5
17.7 17.3
13.8 13.0
11.4 10.6
9.94 9.14
9.07 8.27
0.13~0.31
0.49BG2.5-20L1BG2.5-20L2
2010
12
3°52'7°46'
L50.1150.46
21.5 21.5
17.7 17.3
13.8 13.0
11.4 10.6
9.94 9.14
9.07 8.27
CG2.5-20R1CG2.5-20R2CG2.5-30R1CG2.5-30R2CG2.5-40R1
2010301540
2020303040
12121
3°52'7°46'3°52'7°46'3°52' R
H1H1H1H1HB
1212121215
3535404045
50.1150.4675.1775.68
100.23
55558080
105
57.557.582.582.5107.5
――――(9)
――――(86)
43.543.5565668.5
12.912.927.327.546.7
10.610.422.822.539.0
8.307.7818.017.231.3
6.836.3615.114.126.5
5.975.4913.212.323.3
5.444.9612.011.121.2
0.400.400.820.821.02
CG2.5-50R1CG2.5-50R2CG2.5-60R1
502560
505060
121
3°52'7°46'3°52'
HB 15505055
125.29126.16150.34
130130155
132.5132.5157.5
(9)(110)(110)(136)
818193.5
70.671.198.8
59.058.682.9
47.846.467.3
40.738.657.6
36.133.651.5
33.030.747.0
1.461.461.93
CG2.5-20L1CG2.5-20L2CG2.5-30L1CG2.5-30L2CG2.5-40L1
2010301540
2020303040
12121
3°52'7°46'3°52'7°46'3°52' L
H1H1H1H1HB
1212121215
3535404045
50.1150.4675.1775.68
100.23
55558080
105
57.557.582.582.5107.5
――――(9)
――――(86)
43.543.5565668.5
12.912.927.327.546.7
10.610.422.822.539.0
8.307.7818.017.231.3
6.836.3615.114.126.5
5.975.4913.212.323.3
5.444.9612.011.121.2
0.400.400.820.821.02
CG2.5-50L1CG2.5-50L2CG2.5-60L1
502560
505060
121
3°52'7°46'3°52'
HB 15505055
125.29126.16150.34
130130155
132.5132.5157.5
(9)(110)(110)(136)
818193.5
70.671.198.8
59.058.682.9
47.846.467.3
40.738.657.6
36.133.651.5
33.030.747.0
1.461.461.93
Steel WormsModule 2.5SW
R
P Q
L M N O
W1
Bronze Worm Wheels & Gray Iron Worm WheelsModule 2.5BG・CG
Series Steel Worms
SW
R
P Q
L M N O
S
W1K
Total length Keyway Set Screw Weight
(kg)Catalog No.
● : J Series (Available-on-request)R Width×Depth Size S
63―
5 x 2.35 x 2.35 x 2.3
―M4M4M4
―999
0.390.390.370.36
SW2.5-R1•SW2.5-R1J15•SW2.5-R1J16•SW2.5-R1J17
63―
5 x 2.35 x 2.35 x 2.3
―M4M4M4
―999
0.390.390.370.36
SW2.5-R2•SW2.5-R2J15•SW2.5-R2J16•SW2.5-R2J17
63―
5 x 2.35 x 2.35 x 2.3
―M4M4M4
―999
0.390.390.370.36
SW2.5-L1•SW2.5-L1J15•SW2.5-L1J16•SW2.5-L1J17
63―
5 x 2.35 x 2.35 x 2.3
―M4M4M4
―999
0.390.390.370.36
SW2.5-L2•SW2.5-L2J15•SW2.5-L2J16•SW2.5-L2J17
[Caution on J series]
Bronze Worm Wheels & Gray Iron Worm Wheels
Catalog No.● : J Series (Available-on-request)
Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW2.5-R1•SW2.5-R1J15•SW2.5-R1J16•SW2.5-R1J17
m2.5
1 3°52' RW1W1KW1KW1K
15151617
30 37 42 45 18 ―
SW2.5-R2•SW2.5-R2J15•SW2.5-R2J16•SW2.5-R2J172 7°46' R
W1W1KW1KW1K
15151617
30 37 42 45 18 ―
SW2.5-L1•SW2.5-L1J15•SW2.5-L1J16•SW2.5-L1J17
1 3°52' LW1W1KW1KW1K
15151617
30 37 42 45 18 ―
SW2.5-L2•SW2.5-L2J15•SW2.5-L2J16•SW2.5-L2J17
2 7°46' LW1W1KW1KW1K
15151617
30 37 42 45 18 ―
Specifications
Precision grade KHK W 001 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depthNormalpressure angle 20°
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
* The precision grade of J Series products is equivalent to the value shown in the table.
[Caution on Product Characteristics]
[Caution on Secondary Operations]① Please read “Caution on Performing Secondary Operations” (Page 362) when perform-
ing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
① These worms produce axial thrust forces. See Page 362 for more details.
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.
BG・CG
* *CS has a sand mold casting finish.
GE F
J
A B D’DC A B C D D’
( I )
J
GE F
(H)
CS
CS
HB
AH7 Bore
B Hub dia.
C Pitch dia.
D Throat dia.
D' Outside dia.
E Face width
F Hub width
G Length
(H) Web thickness
( I ) Web O.D.
J Mounting distance
Series
GE F
J
A B D’DC
L
H1K
A B C D D’
( I )
J
GE F
(H)
CS
CS
L
HBKH1
(H)( I ) JAllowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpmCatalog No. Reduction
ratioNo. of teeth
Number of starts
Helixangle
Handthread
Shape AH7 B C D D' E F G
Bore H7
Keyway Js9
Screw sizeCatalog No.
12 14 15 16 17 18 19 20 22 25 28 30 32 35 4 × 1.8 5 × 2.3 6 × 2.8 8 × 3.3 10 × 3.3
M4 M5 M6 M8
* The precision grade of J Series products is equivalent to the value shown in the table.
** FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
NOTE 1 : Allowable torque based on worm speed (rpm)
BG2.5-20R1 J BORE H1K H1K H1K H1K H1K H1K H1K BG2.5-20R2 J BORE H1K H1K H1K H1K H1K H1K H1K BG2.5-20L1 J BORE H1K H1K H1K H1K H1K H1K H1K BG2.5-20L2 J BORE H1K H1K H1K H1K H1K H1K H1K CG2.5-20R1 J BORE H1K H1K H1K H1K H1K H1K H1KCG2.5-20R2 J BORE H1K H1K H1K H1K H1K H1K H1KCG2.5-30R1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2.5-30R2 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2.5-40R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBKCG2.5-50R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2.5-50R2 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2.5-60R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK HBK HBK HBKCG2.5-20L1 J BORE H1K H1K H1K H1K H1K H1K H1KCG2.5-20L2 J BORE H1K H1K H1K H1K H1K H1K H1KCG2.5-30L1 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2.5-30L2 J BORE H1K H1K H1K H1K H1K H1K H1K H1K H1KCG2.5-40L1 J BORE HBK HBK HBK HBK HBK HBK 5,890 HBKCG2.5-50L1 J BORE HBK HBK HBK HBK HBK HBK 6,680 HBK HBK HBKCG2.5-50L2 J BORE HBK HBK HBK HBK HBK HBK 6,680 HBK HBK HBKCG2.5-60L1 J BORE HBK HBK HBK HBK HBK HBK 7,690 HBK HBK HBK HBK
To order J Series products, please specify; Catalog No. + J + BORE* The product shapes of J Series items are identified by background color.
Specifications
Catalog No. BG CGPrecision grade KHK W 002 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 20°
Material CAC502(formerly JIS PBC2) FC200 **
Heat treatment ―Tooth hardness ―
L = 7mm L = 7mm
* Please see Page 394 for Cautions on Product Characteristics and Cautions on Performing Secondary Operations. * For [Caution on J Series], please see Page 395.
400 401
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts BG3-20R1
BG3-20R22010
20
12
3°55'7°50' R
H1
20
50
60.1460.57
66 69 28
15
43 ― ― 52
36.8 37.0
30.1 29.5
23.5 22.1
19.1 17.9
16.7 15.4
15.2 14.0
0.15~0.33
0.89BG3-20L1BG3-20L2
2010
12
3°55'7°50' L 60.14
60.5736.8 37.0
30.1 29.5
23.5 22.1
19.1 17.9
16.7 15.4
15.2 14.0
CG3-20R1CG3-20R2CG3-30R1CG3-30R2CG3-40R1
2010301540
2020303040
12121
3°55'7°50'3°55'7°50'3°55' R
H1H1H1H1HB
5050555555
60.1460.5790.2190.85
120.28
66669696
126
69699999
129
2828282830
4343434345
――――(9)
――――
(107)
5252676782
22.122.246.647.279.8
18.117.738.738.566.3
14.113.330.629.353.2
11.510.725.423.744.6
10.09.24
22.220.839.1
―
0.730.731.501.501.79
CG3-50R1CG3-50R2CG3-60R1
502560
505060
121
3°55'7°50'3°55'
HB636370
150.35151.41180.42
156156186
159159189
30 45 (9)(138)(138)(166)
9797
112
121122169
100100141
81.179.1
114
68.465.196.7
60.556.786.3
2.502.503.40
CG3-20L1CG3-20L2CG3-30L1CG3-30L2CG3-40L1
2010301540
2020303040
12121
3°55'7°50'3°55'7°50'3°55' L
H1H1H1H1HB
5050555555
60.1460.5790.2190.85
120.28
66669696
126
69699999
129
2828282830
4343434345
――――(9)
――――
(107)
5252676782
22.122.246.647.279.8
18.117.738.738.566.3
14.113.330.629.353.2
11.510.725.423.744.6
10.09.24
22.220.839.1
0.730.731.501.501.79
CG3-50L1CG3-50L2CG3-60L1
502560
505060
121
3°55'7°50'3°55'
HB636370
150.35151.41180.42
156156186
159159189
30 45 (9)(138)(138)(166)
9797
112
121122169
100100141
81.179.1
114
68.465.196.7
60.556.786.3
2.502.503.40
Steel WormsModule 3SW
R
P Q
L M N O
W1
Bronze Worm Wheels & Gray Iron Worm WheelsModule 3BG・CG
Series
* The precision grade of J Series products is equivalent to the value shown in the table.
Steel Worms
R
P Q
L M N O
S
W1K
Total length Keyway Set Screw Weight
(kg)Catalog No.
● : J Series (Available-on-request)R Width×Depth Size S
70
―5 x 2.36 x 2.86 x 2.86 x 2.8
―M4M5M5M5
―10101010
0.640.620.600.580.56
SW3-R1•SW3-R1J17•SW3-R1J18•SW3-R1J19•SW3-R1J20
70
―5 x 2.36 x 2.86 x 2.86 x 2.8
―M4M5M5M5
―10101010
0.640.620.600.580.56
SW3-R2•SW3-R2J17•SW3-R2J18•SW3-R2J19•SW3-R2J20
70
―5 x 2.36 x 2.86 x 2.86 x 2.8
―M4M5M5M5
―10101010
0.640.620.600.580.56
SW3-L1•SW3-L1J17•SW3-L1J18•SW3-L1J19•SW3-L1J20
70
―5 x 2.36 x 2.86 x 2.86 x 2.8
―M4M5M5M5
―10101010
0.640.620.600.580.56
SW3-L2•SW3-L2J17•SW3-L2J18•SW3-L2J19•SW3-L2J20
Bronze Worm Wheels & Gray Iron Worm Wheels
BG・CG
[Caution on Secondary Operations]
① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduc-es errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
Specifications
Precision grade KHK W 001 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depthNormalpressure angle 14° 30'
Material S45C
Heat treatment ―Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
[Caution on J series]
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order. Please allow additional shipping time to get to your local distributor.
② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
③ Keyways are made according to JIS B1301 standards, Js9 tolerance.④ Areas of products which have been re-worked will not be black oxide coated.⑤ For products having a tapped hole, a set screw is included.
* *CS has a sand mold casting finish.
GE F
J
A B D’DC A B C D D’
( I )
JGE F
(H)CS
CS
HB
Specifications
Catalog No. BG CGPrecision grade KHK W 002 grade 4 *Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 14° 30'
Material CAC502(formerly JIS PBC2) FC200 **
Heat treatment ―Tooth hardness ―
Series
GE F
J
A B D’DC
L
H1K
A B C D D’
( I )
J
GE F
(H)
CS
CS
L
HBKH1
E F G (H)( I ) JAllowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpmCatalog No. Reduction
ratioNo. of teeth
Number of starts
Helix angleHand thread Shape AH7 B C D D'
Bore H7
Keyway Js9
Screw sizeCatalog No.
* The precision grade of J Series products is equivalent to the value shown in the table.
** FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
NOTE 1 : Allowable torque based on worm speed (rpm)
AH7 Bore
B Hub dia.
C Pitch dia.
D Throat dia.
D' Outside dia.
E Face width
F Hub width
G Total length
(H) Web thickness
( I ) Web O.D.
J Mounting distance20 22 25 28 30 32 35 40
6 × 2.8 8 × 3.3 10 × 3.3 12 × 3.3M5 M6 M8
BG3-20R1 J BORE H1K H1K H1K H1K H1K BG3-20R2 J BORE H1K H1K H1K H1K H1K BG3-20L1 J BORE H1K H1K H1K H1K H1K BG3-20L2 J BORE H1K H1K H1K H1K H1K CG3-20R1 J BORE H1K H1K H1K H1K H1K CG3-20R2 J BORE H1K H1K H1K H1K H1K CG3-30R1 J BORE H1K H1K H1K H1K H1K H1KCG3-30R2 J BORE H1K H1K H1K H1K H1K H1KCG3-40R1 J BORE HBK HBK HBK HBK HBK HBKCG3-50R1 J BORE HBK HBK HBK HBK HBK HBK HBKCG3-50R2 J BORE HBK HBK HBK HBK HBK HBK HBKCG3-60R1 J BORE HBK HBK HBK HBK HBK HBK HBK HBKCG3-20L1 J BORE H1K H1K H1K H1K H1KCG3-20L2 J BORE H1K H1K H1K H1K H1KCG3-30L1 J BORE H1K H1K H1K H1K H1K H1KCG3-30L2 J BORE H1K H1K H1K H1K H1K H1KCG3-40L1 J BORE HBK HBK HBK HBK HBK HBKCG3-50L1 J BORE HBK HBK HBK HBK HBK HBK HBKCG3-50L2 J BORE HBK HBK HBK HBK HBK HBK HBKCG3-60L1 J BORE HBK HBK HBK HBK HBK HBK HBK HBK
① As available-on-request products, requires a lead-time for shipping within 2 working-days (excludes the day ordered), after placing an order.
Please allow additional shipping time to get to your local distributor.
② Number of products we can process for one order is 1 to 20 units. For quantities of 21 or more pieces, we need to quote price and lead time.
③ Keyways are made according to JIS B1301 standards, Js9 tolerance.
④ Certain products which would otherwise have a very long tapped hole are counterbored to reduce the length of the tap.
⑤ For products having a tapped hole, a set screw is included.
[Caution on J series]
To order J Series products, please specify; Catalog No. + J + BORE * The product shapes of J Series items are identified by background color.
L = 7.5mm L = 7.5mm
Catalog No.● : J Series (Available-on-request)
Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW3-R1•SW3-R1J17•SW3-R1J18•SW3-R1J19•SW3-R1J20
m3
1 3°55' R
W1W1KW1KW1KW1K
1617181920
35 44 50 50 20 ―
SW3-R2•SW3-R2J17•SW3-R2J18•SW3-R2J19•SW3-R2J20
2 7°50' R
W1W1KW1KW1KW1K
1617181920
35 44 50 50 20 ―
SW3-L1•SW3-L1J17•SW3-L1J18•SW3-L1J19•SW3-L1J20
1 3°55' L
W1W1KW1KW1KW1K
1617181920
35 44 50 50 20 ―
SW3-L2•SW3-L2J17•SW3-L2J18•SW3-L2J19•SW3-L2J20
2 7°50' L
W1W1KW1KW1KW1K
1617181920
35 44 50 50 20 ―
[Caution on Product Characteristics] ① These worms produce axial thrust forces. See Page 362 for more details.
SW
* Please see Page 394 for Cautions on Product Characteristics and Cautions on Performing Secondary Operations.
402 403
Sp
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ears
Hel
ical
Gea
rsIn
tern
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ears
Rac
ksC
P R
acks
& P
inio
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iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
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airs
Bev
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earb
oxes
Oth
erP
rod
ucts
You can download CAD data (DXF format) of KHK Products from the Web Catalog.
Steel WormsModule 4SW
R
P Q
L M N O
W1
Bronze Worm Wheels & Gray Iron Worm WheelsModule 4BG・CG
Total length Set Screw Weight
(kg)Catalog No.
R Size S9595
――
――
1.761.76
SW4-R1SW4-R2
9595
――
――
1.761.76
SW4-L1SW4-L2
Catalog No. Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW4-R1SW4-R2 m4 1
23°42'7°25'
RR
W1W1
2222
5050
6262
7070
7070
2525
――
SW4-L1SW4-L2 m4 1
23°42'7°25'
LL
W1W1
2222
5050
6262
7070
7070
2525
――
Catalog No.Reduction
ratioNormalmodule
No. of teeth
Number of starts
Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG4-20R1BG4-20R2
2010
m4
2020
12
3°42'7°25'
RR
H1H1
2020
6060
80.1780.67
8888
9090
3535
BG4-20L1BG4-20L2
2010
2020
12
3°42'7°25'
LL
H1H1
2020
6060
80.1780.67
8888
9090
3535
Catalog No.Reduction
ratioNormalmodule
No. of teeth
Number of starts
Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG4-20R1CG4-20R2CG4-30R1CG4-30R2CG4-40R1
2010301540
m4
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
RRRRR
H1H1HBHBHB
2020202020
6060606070
80.1780.67
120.25121.01160.33
8888
128128168
9090
130130171
3535353535
CG4-50R1CG4-50R2CG4-60R1
502560
505060
121
3°42'7°25'3°42'
RRR
H2H2H2
202020
707080
200.42201.69240.5
208208248
211211251
353535
CG4-20L1CG4-20L2CG4-30L1CG4-30L2CG4-40L1
2010301540
2020303040
12121
3°42'7°25'3°42'7°25'3°42'
LLLLL
H1H1HBHBHB
2020202020
6060606070
80.1780.67
120.25121.01160.33
8888
128128168
9090
130130171
3535353535
CG4-50L1CG4-50L2CG4-60L1
502560
505060
121
3°42'7°25'3°42'
LLL
H2H2H2
202020
707080
200.42201.69240.5
208208248
211211251
353535
* CS has a sand mold casting finish.
Specifications
Precision grade KHK W 001 grade 4
Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 14° 30'
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
[Caution on Product Characteristics] ① These worms produce axial thrust forces. See Page 362 for more details.
[Caution on Product Characteristics] ① Worm Wheels are profile shifted to create the proper center distance.② H2 Shape Worm Gears have elongated casting holes in the web (H).③ The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see Page 358 for more details.
Steel Worms
SW
Bronze Worm Wheels & Gray Iron Worm Wheels
(H
( I )
J
A B C D D
GE F
CS
CS
’
)
A B C D D’
( I )
J
GE F
(H)
CS
CS
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or second-ary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
H2HB
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)Catalog No.
F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm
Hub width Total length Mounting distance Allowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)Catalog No.
F G J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm
NOTE 1 : Allowable torque based on worm speed (rpm)
1717171717
5252525252
――
(12)(12)(11)
――
(96)(96)
(136)
71719191
111
45.645.596.396.8
165
37.036.079.178.3
136
28.726.962.359.4
108
23.021.450.947.389.4
0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37
1.561.562.522.523.81
CG4-20R1CG4-20R2CG4-30R1CG4-30R2CG4-40R1
171717
525252
(12)(12)(12)
(176)(176)(218)
131131151
249250348
205204288
165160233
137130194
0.17~0.370.17~0.370.17~0.37
4.784.786.36
CG4-50R1CG4-50R2CG4-60R1
1717171717
5252525252
――
(12)(12)(11)
――
(96)(96)
(136)
71719191
111
45.645.596.396.8
165
37.036.079.178.3
136
28.726.962.359.4
108
23.021.450.947.389.4
0.17~0.370.17~0.370.17~0.370.17~0.370.17~0.37
1.561.562.522.523.81
CG4-20L1CG4-20L2CG4-30L1CG4-30L2CG4-40L1
171717
525252
(12)(12)(12)
(176)(176)(218)
131131151
249250348
205204288
165160233
137130194
0.17~0.370.17~0.370.17~0.37
4.784.786.36
CG4-50L1CG4-50L2CG4-60L1
1717
5252
7171
75.9 75.9
61.7 60.0
47.9 44.8
38.4 35.7
33.7 30.9
30.1 27.5
0.17~0.370.17~0.37
1.911.91
BG4-20R1BG4-20R2
1717
5252
7171
75.9 75.9
61.7 60.0
47.9 44.8
38.4 35.7
33.7 30.9
30.1 27.5
0.17~0.370.17~0.37
1.911.91
BG4-20L1BG4-20L2
NOTE 1 : Allowable torque based on worm speed (rpm)
Specifications
Catalog No. BG CG
Precision grade KHK W 002 grade 4 KHK W 002 grade 4Referencesection of gear Normal plane Normal plane
Gear teeth Standard full depth Standard full depth
Normalpressure angle 14° 30' 14° 30'
Material CAC502(formerly JIS PBC2) FC200 *Heat treatment ― ―
Tooth ardness ― ―
GE F
J
A B D’DC
H1
BG・CG
* FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.
404 405
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
Sp
urG
ears
Hel
ical
Gea
rsIn
tern
alG
ears
Rac
ksC
P R
acks
& P
inio
nsM
iter
Gea
rsB
evel
Gea
rsS
crew
Gea
rsW
orm
Gea
r P
airs
Bev
elG
earb
oxes
Oth
erP
rod
ucts
You can download CAD data (DXF format) of KHK Products from the Web Catalog.
Steel WormsSteel WormsModule 5、6SW
R
P QQ’
L M N O
W3
Bronze Worm Wheels & Gray Iron Worm WheelsModule 5、6BG・CG
Total length Set Screw Weight
(kg)Catalog No.
R Size S125125
――
――
2.862.86
SW5-R1SW5-R2
150150
――
――
4.384.38
SW6-R1SW6-R2
Catalog No. Normal module
Number of starts
Lead angle Hand thread ShapeBore Hub dia. Pitch dia. Outside dia. Face width Hub width (R) Hub width (L)
LH7 M N O P Q Q'SW5-R1SW5-R2 m5 1
24°06'8°13'
RR
W3W3
2525
5656
7070
8080
8585
2020
2020
SW6-R1SW6-R2 m6 1
24°18'8°38'
RR
W3W3
3030
6464
8080
9292
100100
2525
2525
Catalog No.Reduction
ratioNormalmodule
No. of teeth
Number of starts
Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' EBG5-20R1BG5-20R2
2010 m5 20
2012
4°06'8°13'
RR
H1H1
2222
7575
100.26101.04
110110
113113
4545
BG6-20R1BG6-20R2
2010 m6 20
2012
4°18'8°38'
RR
H1H1
2525
100100
120.34121.38
132132
136136
5252
Catalog No.Reduction
ratioNormalmodule
No. of teeth
Number of starts
Helix angle Hand thread ShapeBore Hub dia. Pitch dia. Throat dia. Outside dia. Face width
AH7 B C D D' ECG5-20R1CG5-20R2CG5-30R1CG5-30R2CG5-40R1
2010301540 m5
2020303040
12121
4°06'8°13'4°06'8°13'4°06'
RRRRR
H1H1HBHBH2
2222222222
7575757590
100.26101.04150.38151.56200.51
110110160160210
113113163163213
4545454545
CG5-50R1CG5-50R2CG5-60R1
502560
505060
121
4°06'8°13'4°06'
RRR
H2H2H2
222222
9090
100
250.61252.59300.77
260260310
263263313
454545
CG6-20R1CG6-20R2CG6-30R1CG6-30R2CG6-40R1
2010301540 m6
2020303040
12121
4°18'8°38'4°18'8°38'4°18'
RRRRR
H1H1HBHBH2
2525252525
100100100100100
120.34121.38180.51182.06240.68
132132192192252
136136196196256
5252525252
CG6-50R1CG6-50R2CG6-60R1
502560
505060
121
4°18'8°38'4°18'
RRR
H2H2H2
252525
100100120
300.85303.44361.02
312312372
316316376
525252
Specifications
Catalog No. BG CG
Precision grade KHK W 002 grade 4 KHK W 002 grade 4Referencesection of gear Normal plane Normal plane
Gear teeth Standard full depth Standard full depth
Normalpressure angle 14° 30' 14° 30'
Material CAC502(formerly JIS PBC2) FC200 *Heat treatment ― ―
Tooth hardness ― ―
[Caution on Product Characteristics] ① These worms produce axial thrust forces. See Page 362 for more details.
[Caution on Product Characteristics] ① Worm Wheels are profile shifted to create the proper center distance.② H2 Shape Worm Gears have elongated casting holes in the web (H).③ The allowable torques shown in the table are the calculated values according to the assumed usage conditions. Please see Page 358 for more details.
SW
* CS has a sand mold casting finish.
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or secondary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
Bronze Worm Wheels & Gray Iron Worm Wheels
(H
( I )
J
A B C D D
GE F
CS
CS
’
)
A B C D D’
( I )
J
GE F
(H)
CS
CS
BG・CG
H2HB
Hub width Total length Web thickness Web O.D. Mounting distance Allowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)Catalog No.
F G (H) ( I ) J 30 rpm 100 rpm 300 rpm 600 rpm
Hub width Total length Mounting distance Allowable torque (N·m) NOTE 1 Backlash
(mm)
Weight
(kg)Catalog No.
F G J 30 rpm 100 rpm 300 rpm 600 rpm 900 rpm 1200 rpm
NOTE 1 : Allowable torque based on worm speed (rpm)
2020202020
6565656565
――
(13)(13)(16)
――
(127)(127)(172)
8585
110110135
87.487.9
185187316
70.368.9
150150258
54.751.5
119114206
43.841.096.890.6
170
0.20~0.400.20~0.400.20~0.400.20~0.400.20~0.40
3.183.184.784.787.44
CG5-20R1CG5-20R2CG5-30R1CG5-30R2CG5-40R1
202020
656565
(16)(16)(14)
(223)(223)(276)
160160185
477483668
390390548
315307443
261249369
0.20~0.400.20~0.400.20~0.40
9.799.79
12.0
CG5-50R1CG5-50R2CG5-60R1
2020202020
7272727272
――
(15)(15)(15)
――
(155)(155)(213)
100100130130160
139141294299502
111110237238407
86.281.8
187181325
―――――
0.22~0.420.22~0.420.22~0.420.22~0.420.22~0.42
5.395.398.288.28
10.9
CG6-20R1CG6-20R2CG6-30R1CG6-30R2CG6-40R1
202020
727272
(16)(16)(17)
(275)(275)(336)
190190220
760774
1060
615620865
496488698
―――
0.22~0.420.22~0.420.22~0.42
14.014.019.8
CG6-50R1CG6-50R2CG6-60R1
2020
6565
8585
146 146
117 115
91.2 85.8
73.0 68.4
63.7 58.8
56.9 52.2
0.20~0.400.20~0.40
3.893.89
BG5-20R1BG5-20R2
2020
7272
100100
232 235
185 183
144 136
115 109
99.2 92.3
88.882.0
0.22~0.420.22~0.42
6.606.60
BG6-20R1BG6-20R2
NOTE 1 : Allowable torque based on worm speed (rpm)
[Caution on Secondary Operations] ① Please read “Caution on Performing Secondary Operations” (Page 362) when performing modifications and/or second-ary operations for safety concerns. KHK Quick-Mod Gears, the KHK's system for quick modification of KHK stock gears is also available.
② Gear tooth hardening of the worm reduces the precision (introduces errors in the lead and pressure angles). Avoid heat treating as it will create bad tooth contact causing abrasion of the wheel.
GE F
J
A B D’DC
H1
Specifications
Precision grade KHK W 001 grade 4
Referencesection of gear Normal plane
Gear teeth Standard full depth
Normalpressure angle 14° 30'
Material S45C
Heat treatment ―
Tooth hardness (less than 194HB)
Surface treatment Black oxide coating
* FC200’s tensile strength (200N/mm2) is derived from test specimens and differs according to the product shape.