we produce only spur gear€¦ · gear hobbing machine klingelnberg gmbh p 6 gear measuring center...

A Main machining and verification equipment ..... 3

D Selecting .................... 17

E Terminology ........ 19

B.1 FRAMEs/STAGEs/RATIOs.................................. 5B.2 Ordering info ............................................ 5

B.3 Specs shared by all the FRAMEs and REDUCTION RATIOs ................................... 5

B.4 STAGE, BACKLASH, and EFFICIENCY ..... 5B.5 Specs shared by all the FRAMEs ....... 6

B.6 Specs shared by RATIOs under a STAGE of a FRAME ....................... 6

B.7 Specs of TORQUE for each REDUCTION RATIO .................. 7

B.8 Drawing and dimensions ..... 10

B EC series PLANETARY GEAR REDUCER ............. 5C.1 Symbols with index ................... 11

C.2 Cross reference .................... 12

C Symbol and index in a formula 11

We produce only spur gear

reducers till now, and the torsional

backlash of any of the 2-stage ones’

is less than 8 arcmin. Such achievement

is because of the following:

Hardware and software of R&D, machining, and verification:The best the market can offer, and shown in the later part of this brochure.

Discipline:• Including controlled temperature outside

and inside of the machines.• Making traceability possible.

E.g. Laser-marking on the reducer and

labeling on the package.

Skill or technology:With the hardware and software gradually arrived since 2014, we have built up the expertise to make sure our equipment deliver the intended performance.

2017.v21 2

Preface

Tableof

Content

Mihumis Technology Co., Ltd.

Yamazaki Mazak Corp. Quick Turn Smart 200 CNC Turning Center

EMAG Koepfer GmbHKP-160 Gear Hobbing Machine

Klingelnberg GmbHP 26Gear Measuring Center

Liebherr-Verzahntechnik GmbHLFS-200Gear Shaping Machine

Gearbox Life Test Machine Gearbox Torsional Backlash Measuring Machine

Mar., 2014 Jul., 2016Nov., 2014 Jul., 2015 Dec., 2015 Nov., 2016 Apr., 2017



3

A Main machining and verification equipment

42017.v2 Mihumis Technology Co., Ltd.

2017.v25 6

B EC series PLANETARY GEAR REDUCER


B.1　FRAMEs/STAGEs/RATIOs

Stage 1 2

Ratio 3 4 5 6 7 8 9 10 15 20 25 30 35 40 45 50 60 70 80 90 100

Frame

044 n y n y

062 n y n y

090 y

100 y

120 y

B.2　Ordering info

Model no. example

1 E C 062 009- Siemens 1FT7064- □ AK7

2 E C 100 005

Meaning SERIES 1 SERIES 2 FRAMEREDUCTON

RATIO-

MOTOR BRAND AND MODEL NO. IF SPECIFIED.

No. of digit 01 02 03, 04, 05 06, 07, 08 - No control over the length.

B.3　Specs shared by all the FRAMEs and REDUCTION RATIOs

OPERATING

TEMPERATURE

(tp) [°C]ROTATING

DIRECTION, INPUT AND

OUTPUT

INGRESS PROTECTION

MARKING (IP CODE)

SERVICE LIFE (LShr) [hr]

LUBRICANTOPERATING

NOISE (NZ) [dBA]

From (tpMIN@OP)

To (tpMAX@OP)

CYCLIC DUTY (OPcl)

CONTINUOUS DUTY (OPct)

-25 +90 Same 65 20,000 10,000 Synthetic 63

B.4　STAGE, BACKLASH, and EFFICIENCY

STAGE

BACKLASH (BL) [arcmin]

EFFICIENCY (EF) [%]Refined Standard

1 3 5 97

2 6 8 94

B.5　Specs shared by all the FRAMEs

FRAME [mm] 044 062 090 100 120

Housing material Steel Aluminum

NOMINAL INPUT SPEED(RS1NM) [rpm]

5,000 5,000 3,150 2,600 2,150

MAX. INPUT SPEED (RS1MAX) [rpm] 10,000 10,000 6,300 5,200 4,300

OUTPUT AXIAL LOAD, INTERGRATED (FO2A) [N] 240 539 1,264 1,819 2,463

OUTPUT RADIAL LOAD, INTERGRATED (FO2R) [N] 200 771 1,805.5 2,599 3,519

B.6　Specs shared by RATIOs under a STAGE of a FRAME.

FRAME [mm] STAGE WEIGHT [kg]TORSIONAL RIGIDITY*

(Cts) [Nm/arcmin]

MASS MOMENT INERTIA

(J) [kgcm^2]

0441 0.75 0.72 0.162 0.92 0.936 0.20

0621 1.20 1.08 0.5732 2.40 1.62 1.983

0901 3.30 1.2 4.2682 5.70 2.5 11.462

1001 4.60 1.38 7.3762 7.30 4.9 18.977

1201 8.60 1.44 19.5502 13.50 8.64 44.0223

*Ratio 20

2017.v27 8



B.7　Specs of TORQUE for each REDUCTION RATIO

FRAME [mm] 044 062

STAGEREDUC-

TION RATIO (RTro)

MAX ACCEL-ERATION

(TQ2B) [Nm]

NOMINAL (TQ2NM)

[Nm]

EMERGEN-CY STOP

(TQ2ES) [Nm]

MAX ACCEL-ERATION

(TQ2B) [Nm]

NOMINAL (TQ2NM)

[Nm]

EMERGEN-CY STOP

(TQ2ES) [Nm]

1

3 - - - - - -

4 25.8 12.9

40.3

53.1 26.6

83

5 26.6 13.3 54.8 27.4

6 28.2 14.1 58.1 29.1

7 24.2 12.1 49.8 24.9

8 25 12.5 51.5 25.7

9 22.5 11.3 46.5 23.2

10 21.7 10.9 44.8 22.4

2

15 - - - - - -

20 26.6 13.3

40.3

122 61

185

25 26.6 13.3 122 61

30 26.6 13.3 122 61

35 26.6 13.3 122 61

40 26.6 13.3 122 61

45 26.6 13.3 122 61

50 26.6 13.3 122 61

60 28.2 14.1 129 64.7

70 24.2 12.1 111 55.5

80 25 12.5 115 57.3

90 22.5 11.3 104 51.8

100 21.7 10.9 99.9 49.9

090 100 120

MAX ACCEL-ERATION

(TQ2B) [Nm]

NOMINAL (TQ2NM)

[Nm]

EMERGEN-CY STOP

(TQ2ES) [Nm]

MAX ACCEL-ERATION

(TQ2B) [Nm]

NOMINAL (TQ2NM)

[Nm]

EMERGEN-CY STOP

(TQ2ES) [Nm]

MAX ACCEL-ERATION

(TQ2B) [Nm]

NOMINAL (TQ2NM)

[Nm]

EMERGEN-CY STOP

(TQ2ES) [Nm]

152 76.1

162

226 113

390

379 190

654

168 83.9 249 125 419 209

173 86.6 257 129 432 216

184 91.8 273 136 458 229

157 78.7 234 117 392 196

163 81.3 242 121 405 203

147 73.4 218 109 366 183

142 70.8 210 105 353 177

455 227

689

662 331

1,003

1,053 527

1,596

455 227 662 331 1,053 527

455 227 662 331 1,053 527

455 227 662 331 1,053 527

455 227 662 331 1,053 527

455 227 662 331 1,053 527

455 227 662 331 1,053 527

455 227 662 331 1,053 527

482 241 702 351 1,117 558

414 207 602 301 957 479

427 214 622 311 989 495

386 193 562 281 893 447

372 186 541 271 862 431

2017.v29 10



PCDØD6 PC

DØD9

ØD5

ØD

4

ØD

3

ØD

2

ØD

7

ØD

8

M1

M2

H8 H7

H5

H4

H6

H1

H2

H3

D1D10

PCD

ØD

6

PCDØD9

ØD5

ØD

4Ø

D3

ØD

2

ØD

7

ØD

8

M1M2

H8 H7

H5

H4H6

H1

H2

H3

D1D10

PCDØD6

PCDØ

D9

ØD5

ØD

4

ØD

3

ØD

2

ØD

7

ØD

8

M1

M2

H8 H7

H5

H4

H6

H1

H2

H3

D1

ØD

11

D10

Stage Frame D1 D2 D3(Max.) D4 D5 D6 D7 D8 D9 D10 M1 M2 H1 H2 H3 H4 H5 H6 H7 H8

1

062 60 5 16 50 5.5 70 14 19

5060 70

70 7590

60 70

80M6

M4M5M6

134

30.536

4146

5 7.5 36 10 20 3

090 85 6 22 80 6.5 10019 2224

7080 95

110

90 100115145

85110130

M8M5M6

M8177.5

40 506070

6 7.5 48 12.5 30 4

100 105 8 25 90 9 120 24 28

95110

115 145

105130 M8

M5M6M8

186465666

6 7.5 51 13 30 6

120 120 10 32 110 9 13024 2832

95110130

115145165

120130150

M10M6M8

M10238

62.866 77

7 10.5 65 15 40 10

B.8　Drawing and dimensions

Frame Stage D1 D2 D3(Max.) D4 D5 D6 D7 D8 D9 D10 M1 M2 H1 H2 H3 H4 H5 H6 H7 H8

044

1 44 5 13 35 4.5 5089

11

304050

454648606370

44 55 60

M4x0.7M3 M4M5

98.5 2630 5 5 26 5 15 2.5

2 44 5 13 35 4.5 5089

11

30 4050

454648 606370

4455 60

M4x0.7M3M4M5

117.5 2630 5 5 26 5 15 2.5

Stage Frame D1 D2D3

(Max.) D4 D5 D6 D7 D8 D9 D10 D11 M1 M2 H1 H2 H3 H4 H5 H6 H7 H8

2

062 60 5 16 50 5.5 70 1419

50 6070

707590

60 70 80

84 M6M4M5M6

176

30.5364146

5 4 36 10 20 3

090 85 6 22 80 6.5 100192224

70 8095

110

90100115145

85 110130

108 M8M5 M6M8

222

405060 70

6 7.5 48 12 30 4

100 105 8 25 90 9 120 24 28

95 110

115 145

105 130 120 M8

M5 M6M8

23246 5666

6 7.5 51 13 30 6

120 120 10 32 110 9 13024 28 32

95 110130

115145165

120 130 150

150 M10M6M8

M10284

62.866 77

7 10.5 65 13 40 10

2017.v211 12

C Symbol and index in a formula 1S: Symbols；I: Index


C.1　Symbols with index

Example Meaning Example Meaning

BL BACKLASH, torsional backlash. RS1MAX MAX. INPUT SPEED.

clhr/TM_OP Occurrence of operating cycle per hour. RS1NM NOMINAL INPUT SPEED.

Cts TORSIONAL RIGIDITY. RTac ACTIVE RATIO.

DT2xDistance between radial force and output.

RTro REDUCTION RATIO.

DT2yDistance between axial force and center of gearhead.

TMac ACTUAL WORKING TIME.

DT2zDistance between shaft collar and the supporting point of output bearing.

TMb ACCELERATION TIME.

EF EFFICIENCY. TMcs CONSTANT TRAVEL TIME.

FAsk SHOCK FACTOR. TMdc DECELERATION TIME.

FO2aAXIAL LOAD AT THE OUTPUT, ACTUAL.

TMOP OPERATING TIME.

FO2AAXIAL LOAD AT THE OUTPUT, MAX. PERMISSIBLE.

TMps PAUSE TIME.

FO2rRADIAL LOAD AT THE OUTPUT, ACTUAL.

tpMAX@OPOPERATING TEMPERATURE, HIGH-EST PERMISSIBLE.

FO2RRADIAL LOAD AT THE OUTPUT, MAX. PERMISSIBLE.

tpMIN@OPOPERATING TEMPERATURE, LOWEST PERMISSIBLE.

J MOMENT OF INERTIA. tpOP OPERATING TEMPERATURE.

LShr SERVICE LIFE, in hour. TQ2BACCELERATON TORQUE, MAX. PER-MISSIBLE.

nl NO LOAD. TQ2ES EMERGENCY STOP TORQUE.

NZ OPERATING NOISE. TQ2kOUTPUT BENDING or TILTING MOMENT, ACTUAL.

OPcl CYCLIC DUTY MODE. TQ2KOUTPUT BENDING or TILTING MOMENT, MAX. PERMISSIBLE.

OPct CONTINUOUS DUTY MODE. TQ2NM NOMINAL OUTPUT TORQUE.

C.2　Cross reference

Symbol and/or index

Unit Type1 Meaning Example Example meaning

1 – I Input side or drive

J1 INERTIA TO THE INPUT.

RS1MAX MAX. INPUT SPEED.

RS1NM NOMINAL INPUT SPEED.

2 – I Output side

DT2xDistance between radial force and output shaft collar.



FO2a AXIAL LOAD AT THE OUTPUT, ACTUAL.

FO2AA X I A L L O A D AT T H E O U T P U T, M A X . PERMISSIBLE.

FO2r RADIAL LOAD AT THE OUTPUT, ACTUAL.


J2 INERTIA TO THE OUTPUT.

TQ2BACCELERATON TORQUE, MAX. PERMISSIBLE.

TQ2ES EMERGENCY STOP TORQUE.

TQ2kOUTPUT BENDING or TILTING MOMENT, AC-TUAL.

TQ2KOUTPUT BENDING or TILTING MOMENT, MAX. PERMISSIBLE.

TQ2NM NOMINAL OUTPUT TORQUE.

A/a – I Axial, permissible/actual



ac – I Active (time)RTac ACTIVE RATIO.


2017.v213 14



Symbol and/or index


B/b – I Acceleration (time), permissible/actual



BL arcmin S Backlash, torsional backlash BL BACKLASH, torsional backlash.

CNm/

arcminS Rigidity Cts TORSIONAL RIGIDITY.

cl – I Cyclic (duty mode), (time) of a cycle

clhr/TM_OP Occurrence of operating cycle per hour.

OPcl CYCLIC DUTY MODE.

cs – I Constant speed (time) TMcs CONSTANT TRAVEL TIME.

ct – I Continuous (duty mode) OPct CONTINUOUS DUTY MODE.

dc – I Deceleration (time) TMdc DECELERATION TIME.

DTmultiple

unitsS Distance, Travel



DT2zDis tance between shaf t co l la r and the supporting point of output bearing.

EF % S Efficiency EF EFFICIENCY.

ES – I Emergency stop TQ2ES EMERGENCY STOP TORQUE.

FA – S/I Factor FAsk Shock factor.

FO N S/I Load/Force





hr hr I Hourclhr/TM_OP Occurrence of operating cycle per hour.

LShr SERVICE LIFE, in hour.

Symbol and/or index


J kgcm^2 S/I MASS MOMENT OF INERTIA

J1 INERTIA TO THE INPUT.

J2 INERTIA TO THE OUTPUT.

K/k – I Tilting, Rated/ equivalent

TQ2kOUTPUT BENDING or TILTING MOMENT, ACTUAL.


LS hr S Service life LShr SERVICE LIFE, in hour.

MAX/ max

– I Maximum, permissible/actual

RS1MAX MAX. INPUT SPEED.

tpMAX@OPOPERATING TEMPERATURE, HIGHEST PERMISSIBLE.

MIN/ min

– I Minimum, permissible/actual tpMIN@OP

OPERATING TEMPERATURE, LOWEST PERMISSIBLE.

nl – S/I No load nl NO LOAD.

NM – I NominalRS1NM NOMINAL INPUT SPEED.


NZ dBA S Operating noise NZ OPERATING NOISE.

OP – S/I

Duty mode or operation (duration), Number of cycles (per hr or service life)


OPcl CYCLIC DUTY MODE.

OPct CONTINUOUS DUTY MODE.




tpOP Operating temperature.

ps – I Pause (time) TMps PAUSE TIME.

2017.v215 16



Symbol and/or index


R/r – IRadial, permissible/ actual



ro – I Reducer only RTro REDUCTION RATIO.

RS rpm S Rotating SpeedRS1MAX MAX. INPUT SPEED.

RS1NM NOMINAL INPUT SPEED.

RTmultiple

unitsS Ratio

RTac ACTIVE RATIO.

RTro REDUCTION RATIO.

sk – I Shock FAsk Shock factor.

TM

sec

min

hr

S/I Time




TMcs CONSTANT TRAVEL TIME.

TMdc DECELERATION TIME.


TMps PAUSE TIME.

tp °C S/I Temperature



tpOP OPERATING TEMPERATURE.

TQ Nm STorque for output and tilting


TQ2ES EMERGENCY STOP TORQUE.

TQ2kOUTPUT BENDING or TILTING MOMENT, ACTUAL.



Symbol and/or index


ts – I Torsional Cts TORSIONAL RIGIDITY.

x – I(Distance) between radial force and output shaft collar


y – I(Distance) between axial force and center of reducer.


z – I

(Distance) between shaft collar and the supporting point of output bearing.


17 182017.v217 18

Load: L

Reducer: ro

Motor: mo

A1. TMac

A4. DONE

A2. RTacOPcl01. clhr/TM_OP

OPcl02. FAsk

OPcl06. RS2max

OPcl04. ro

OPcl09. RS1max

OPcl03. TQ2B

L3. TMac

L4. RTac

L5. clhr/TM_OP

L2. TQ2B

L1. RS2maxOPct01. clhr/TM_OP

OPct02. FAsk

OPct06. RS2NM

OPct04. ro

OPct09. RS1NM

OPct03. TQ2b and TQ2B

OPct08. TQ1MAX_mo >= TQ1max_mo

OPcl08. TQ1MAX_mo >= TQ1max_mo

OPcl10. RS1MAX_mo >= RS1NM_mo

OPct10. RS1MAX_mo >= RS1NM_mo

mo3. TMac

mo4. RTac

mo5. cl hr/TM_OP

mo2. TQ1max

mo1. RS1max

OPcl07. mo OPct07. mo

Application: A

OPct05. TQ2B / FAsk >= TQ2NM

OPcl05. TQ2B / FAsk >= TQ2NM

OPcl11. Find out: FO2r, FO2a, and TQ2k = (FO2r x DT2y + FO2a x (DT2x + DT2y))

OPct11. Find out: FO2r, FO2a, and TQ2k = (FO2r x DT2y + FO2a x (DT2x + DT2y))

OPcl12. FO2r =< FO2R, FO2a =< FO2A, and TQ2k < TQ2K

OPct12. FO2r =< FO2R, FO2a =< FO2A, and TQ2k < TQ2K

OPcl13. BL OPct 13. BLEnergyFiltering sequence

A3.

OPcl OPct

D Selecting


19 202017.v219 20

E Terminology


# Terminology Criteria, explanation, or example.

BACKLASH (BL) [arcmin] or [’]

ANGULAR MINUTE [arcmin] or [’]

2 BACKLASH (Torsional backlash) (BL)

2.1 Is the maximum angle of torsion of the output shaft in relation to the input, and measure by the angle.

2.2 The main factor is the face clearance among all the gears in a gearbox.

3 ANGULAR MINUTE

3.1 1 degree = 60 angular minutes or arcmin = 60’. Angular minute can be used as the unit for the accuracy of a gearbox: When BACKLASH (BL) of a REDUCER is 1 arcmin, the deviation of an output cycle of it will be 1/60 degree, and it influences also the arc length by 1/60° .

3.2 The formula concerning the torsional backlash and output shaft arc length deviation is: b = 2 • π • r • α° / 360° .

4 Example： When output shaft radius is 19mm, and the BACKLASH (BL) = 3’, the deviation at the shift will be = 2 • 19mm • 3.14 • 3’ / 60° / 360° = 0.01657mm.

5 Due to the difference on engagement character, helical gear REDUCER can usually achieve lower BACKLASH (BL), or making their higher BACKLASH (BL) harder to be measured, than those of spur ones.With high precision and accuracy of machining, and optimized mesh, the spur gear REDUCERs of Mihumis Technology achieve genuinely low BACKLASH (BL).

03 EFFICIENCY (EF) [%]

1 The ratio of output to input power. The power lost due to friction is unavoidable, and thus the EFFICIENCY(EF) is always less than 1 or 100%.

2 Info in this brochure is based on NOMINAL INPUT SPEED, full load, and no friction.

04 EMERGENCY STOP TORQUE (TQ2ES) [Nm]

1 The maximum permissible torque at the output side of the REDUCER.

2 Must not exceed 1,000 times during the SERVICE LIFE (LShr) of a REDUCER.

05 INGRESS PROTECTION MARKING (IP CODE)

1 The IP Code, International Protection Marking, IEC standard 60529, classifies and rates the degree of protection provided against intrusion (body parts such as hands and fingers), dust, accidental contact, and water by mechanical casings and electrical enclosures. The first digit indicates the protection level against ingress of solid objects, while the second for liquid.

2 Example:

2.1 An electrical socket rated IP22 is protected against insertion of fingers and will not be damaged or become unsafe during a specified test in which it is exposed to vertically or nearly vertically dripping water. IP22 or 2X are typical minimum requirements for the design of electrical accessories for indoor use.

2.2 A particular cellular phone rated at IP67 is“dust resistant”and can be “immersed in 1.5 meters of freshwater for up to 30 minutes”.


01 NOMINAL OUTPUT TORQUE (TQ2NM) [Nm]

ACCELERATION TORQUE, MAX. PERMISSIBLE (TQ2B) [Nm]

OCCURRENCE OF OPERATION CYCLE PER HOUR (clhr/TM_OP)

SHOCK FACTOR (FAsk)

1 In the CYCLIC DUTY (OPcl) the MAX PERMISSIBLE ACCELERATION TORQUE (TQ2B) can be applied to a REDUCER shortly, and within 1,000 times per hour. clhr/TM_OP <=1,000

2 NOMINAL OUTPUT TORQUE (TQ2NM) is the upper limit for the output and continuous output of a REDUCER under CONTINUOUS DUTY (OPct).

3 NOMINAL OUTPUT TORQUE <= ACCELERATION TORQUE, MAX. PERMISSIBLE TQ2NM <= TQ2B

4 No matter a reducer is working under CYCLIC DUTY (OPcl) or CONTINUOUS DUTY (OPct), the frequency of change on the transmitting SPEED (RS) and TORQUE (TQ) needed be taken into consideration.

5 Apply SHOCK FACTOR (FAsk) to lower the MAX. PERMISSIBLE ACCELERATION TORQUE (TQ2B) when the OCCURRENCE OF OPERATION CYCLE PER HOUR (clhr/TM_OP) needs to be larger than 1,000.

6 Divide an hour with OPERATING TIME (TMOP) i.e. from resting to ACCELERATION TIME (TMb), to CONSTANT TRAVEL TIME (TMcs), to DECELERATION TIME (TMdc), to PAUSE TIME (TMps) = OCCURRENCE OF OPERATION CYCLE PER HOUR. clhr/TM_OP = 1hr / TMOP

7 Find from the following the OCCURRENCE OF OPERATION CYCLE PER HOUR (clhr/TM_OP) and then the matching SHOCK FACTOR (FAsk)： clhr/TM_OP FAsk

1 ~ 1,000 1.0 1,001 ~ 1,500 1.1 1,501 ~ 2,000 1.3 2,001 ~ 3,000 1.6 3,001 ~ 5,000 1.8

8 TQ2B >= TQ2b x FAsk MAX. PERMISSIBLE ACCELERATION TORQUE >= ACTUAL ACCELERATION TORQUE x SHOCK FACTOR TQ2b <= TQ2B / FAskACTURAL ACCELERATION TORQUE <= MAX. PERMISSIBLE ACCELERATION TORQUE / SHOCK FACTOR

02 FACE CLEARANCE BETWEEN GEAR TOOTH [length unit ]

1 GEAR TEETH FACE CLEARANCE

1.1 Is measured by the distance instead of the angle between meshing teeth of a pair of gears.

1.2 Its functions are: A. absorbing the minute deviancy

of the teeth. B. absorbing the nonconformity between

the centers of the teeth. C. absorbing the thermal-deformation of the teeth during operation. D. allowing a room for lubricant film to prevent jam.

21 222017.v221 22

E Terminology



06 MASS MOMENT OF INERTIA (J) [kgcm^2]

1 The MASS MOMENT OF INERTIA (J) is a measurement of the effort applied by an object to maintain its momentary condition (at rest or moving).

2 A parameter given in this brochure is the system MASS MOMENT OF INERTIA (J) of the concerning REDUCER and the combination of those of all the revolving and applicable parts in that REDUCER.

07 MAX. INPUT SPEED (RS1MAX) [rpm]

1 Applicable to only CYCLIC DUTY (OPcl) and not CONTINUOUS DUTY (OPct).

2 Under the CYCLIC DUTY (OPcl) the input speed can be momentarily exceeds the rated and shortly close to, but never exceeds, the MAX. INPUT SPEED (RS1MAX).

08 MAX. OUTPUT TORQUE (TQ2MAX)

1 Means the largest torque can be transmitted by the REDUCER. For applications that copes with minor increase over time on the TORSIONAL BACKLASH (BL) this value can be chosen.

09 NOMINAL INPUT SPEED (RS1NM) [rpm]

1 No exceeding NOMINAL INPUT SPEED (RS1NM) under CONTINUOUS DUTY (OPct).

2 Under the standard warranty conditions, the housing temperature of a reducer should not exceed 90ºC (OPERATING TEMPERATURE, HIGHEST PERMISSIBLE (tpMAX@OP)).

3 Might need to take the ambient temperature into consideration.

10 ACTUAL WORKING TIME (TMac) [sec/min/hr]

ACTIVE RATIO (RTac) [%]

OPERATING MODES (OP)

CONTINUOUS DUTY (OPct)

CYCLIC DUTY (OPcl)

1 Depending on the ACTUAL WORKING TIME (TMac) and ACTIVE RATIO (RTac) [%] to decide an operation is CONTINUOUS DUTY (OPct) or CYCLIC DUTY (OPcl).

2 CYCLIC DUTY (OPcl) means the ACTIVE RATIO (RTac) < 60% and ACTUAL WORKING TIME (TMac) < 20 min.

CONTINUOUS DUTY (OPct) means the ACTIVE RATIO (RTac) >= 60% or ACTUAL WORKING TIME (TMac) >= 20 min.

3 Formulae: TMb + TMcs + TMdc = TMac ACCELERATION TIME + CONSTANT TRAVEL TIME + DECELERATION TIME = ACTUAL WORKING TIME

TMac + TMps = TMOP ACTUAL WORKING TIME + PAUSE TIME = OPERATING TIME

TMac / TMOP = RTac ACTUAL WORKING TIME / OPERATING TIME = ACTIVE RATIO

3.1 TMb ACCELERATION TIME

3.2 TMcs CONSTANT TRAVEL TIME

3.3 TMdc DECELERATION TIME

3.4 TMac ACTUAL WORKING TIME

3.5 TMps PAUSE TIME

3.6 TMOP OPERATING TIME

3.7 RTac ACTIVE RATIO


11 OPERATING NOISE (NZ) [dBA]

1 Measured from REDUCTION RATIO (RTro) = 10/100, at one meter and NOMINAL INPUT SPEED (RS1NM), with no load (nl).

2 Influences by its size, REDUCTION RATIO (RTro), and INPUT SPEED (RS1). The smaller the REDUCTION RATIO (RTro), the bigger the size and the faster the INPUT SPEED (RS1), the louder the OPERATING NOISE (NZ) .

3 Keeping the other conditions the same, usually it’s easier for a gear box with helical gears to be quieter than those with spur ones. Nevertheless, with optimized design, machining, and assembly, a spur-geared REDUCER of Mihumis can usually offer better quietness than most of the helical ones in the market, no matter when it is brand new or throughout its SERVICE LIFE (LShr) .

RS1MAX

TQ2ESTQ2B

RS

TQ2

FO2R/r

TMb TMcs TMdc TMps

RS1b

RS1cs

RS1dc

TM

-TQ2ES

-TQ2B

TM

TM

FO2R

FO2A/a TM

FO2A

-FO2A

TMac

TMOP

RS2b

-RS2b

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E Terminology



12 OUTPUT AXIAL FORCE (FO2a) (FO2A) [N]

OUTPUT RADIAL FORCE (FO2r) (FO2R) [N]

OUTPUT BENDING or TILTING MOMENT (TQ2k) (TQ2K) [Nm]

1 At 100 rpm or at the maximum output speed when it is smaller than 100 rpm.

2 The force acts parallel to the output shaft.　

2.1 The force may be applied with offset via a lever arm, and generates also an OUTPUT BENDING or TILTING MOMENT (TQ2k).

3 The force acts at a right angle to the output shaft.

3.1 Applied at the center of the length, when with output shaft.

3.2 Applied at the center of the circle, when with output flange.

4 AXIAL LOAD (FO2a) and RADIAL LOAD (FO2r) applied, and their respective appli-cation points to the inner radial bearing at the output side, act as a lever arm, which produces an OUTPUT BENDING or TILTING MOMENT (TQ2k). If the OUTPUT BENDING or TILTING MOMENT (TQ2k) is larger than the permissible value (TQ2K) elastomeric couplings might be needed.

5 Formulae: FO2r =< FO2R FO2a =< FO2A TQ2k < TQ2K


FO2R RADIAL LOAD AT THE OUTPUT, MAX. PERMISSIBLE.

FO2a OUTPUT AXIAL FORCE, ACTUAL.

FO2A OUTPUT AXIAL FORCE, MAX. PERMISSIBLE.

TQ2k OUTPUT BENDING or TILTING MOMENT, ACTUAL.

TQ2K OUTPUT BENDING or TILTING MOMENT, MAX. PERMISSIBLE.


13 REDUCTION RATIO (RTro)

1 The REDUCTION RATIO (RTro) indicates the factor by which the REDUCER transforms the three relevant parameters of motion SPEED (RS), TORQUE (TQ) and MASS MOMENT OF INERTIA (J). The factor is a result of the geometry of the gearing elements.

2 Formulae:2.1 RS1 / RS2 = RTro INPUT SPEED / OUTPUT SPEED = REDUCTION RATIO2.2 TQ2 / TQ1 = RTro OUTPUT TORQUE / INPUT TORQUE = REDUCTION RATIO2.3 J2 / J1 = RTro^2 OUTPUT INERTIA / INPUT INERTIA = REDUCTION RATIO^22.4 RS SPEED [rpm] 2.5 RS1 INPUT SPEED [rpm]2.6 RS2 OUTPUT SPEED [rpm]

3 Example: RTro = 4, RS1 = 2,000 rpm, TQ1 = 40Nm, J1 = 0.15 kgm^2 RS2 = 500 rpm = 2,000 rpm / 4 TQ2 = 160 Nm = 40 Nm • 4 J2 = 2.4 kgm^2 = 0.15 kgm^2 • 4^2

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E Terminology



14 SERVICE LIFE (LShr) [hr]

1 Indicates the life span in hour.

2 When the OPERATION MODE (OP), OUTPUT TORQUE (TQ2), INPUT SPEED (RS1), and TEMPERATURE (tp) comply to this brochure, the SERVICE LIFE (LShr) is then decided by the influence from OUTPUT AXIAL LOAD (FO2a), RADIAL LOAD AT THE OUTPUT, ACTUAL (FO2r) and the BENDING or OUTPUT TILTING MOMENT (TQ2k) to the output bearing.

15 SYNCHRONIZATION ERROR

1 The synchronization error equals to the variations in speed measured between the input and output during one revolution of the output shaft, and is caused by manufacturing tolerances and results in minute angular deviations and fluctuations in ratio.

16 TEMPERATURE (tp) [°C]

1 Indicates the temperature on the surface of a REDUCER.

2 OPERATION TEMPERATURES (tpOP) are decided by the lubricant and seal used.

3 Related to:

3.1 (tpMAX@OP) OPERATING TEMPERATURE, HIGHEST PERMISSIBLE. [°C]

3.2 (tpMIN@OP) OPERATING TEMPERATURE, LOWEST PERMISSIBLE. [°C]

17 TORQUE (TQ)

1 Indicates in this catalogue the input and output forces of a REDUCER or the tilting forces applied to the REDUCER in an application.

18 TORSIONAL RIGIDITY (Cts) [Nm/arcmin]

1 TORSIONAL RIGIDITY (Cts) [Nm/arcmin] shows the torque required to turn the output shaft by one angular minute.

2 A set of shaft responses to torque firstly with distortion before rotation. The degree to the resistance against that distortion or torque equals to the degree of the TORSIONAL RIGIDITY (Cts).

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