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GTM/GTMR Series High-Precision Gearboxes for Servo Motors The Drive & Control Company Industrial Hydraulics Electric Drives and Controls Linear Motion and Assembly Technologies Pneumatics Service Automation Mobile Hydraulics

GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

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Page 1: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

GTM/GTMR Series High-Precision Gearboxes for Servo Motors

The Drive & Control Company

IndustrialHydraulics

Electric Drivesand Controls

Linear Motion andAssembly Technologies Pneumatics

ServiceAutomation

MobileHydraulics

Page 2: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

2 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

The GTM in-line planetary gearboxhas been designed for direct mounting to servo motors in high-precisionapplications. A wide range and modularconstruction make it possible to use the GTM in all factory automationapplications.

In the GTM in-line planetary gearbox, theservo motor is connected to the sun gearof the gearbox. This sun gear drives threeplanetary gears that rest in pinion cages.The planet gears revolve inside a ring gear,which is machined directly into the case ofthe gearbox, for unparalleled rigidity.

The GTMR right-angle hypoid gearboxhas been designed for highly-dynamicservo motors and allows for single-stagetransmission ratios of up to 15:1.For ratios greater than 15:1, a primary,planetary stage is added without increasingthe physical size of the gearbox.

Rexroth GTM and GTMR Benefits:• Low noise: Cavities create noise, and our

internal cavity is smaller. The RexrothGTM and GTMR series are rated up to10dB lower than our closest competition.

• Robust: Compared with other gearboxesof the same size, the Rexroth GTM andGTMR use the largest tapered rollerbearings possible. This allows for bothhigher radial and axial loads and givesthe bearings longer life.

• Low operating temperatures: Thetapered roller bearings act as a pump,so that the minimum amount of oil canbe used in vertical, horizontal or angledapplications. This design allows theRexroth GTM and GTMR to generateless friction and less heat.

• Safety and reliability: The cold-fusionprocess between the coupling anddriving gear allows high emergency- stop torque for maximum safety andreliability. The Rexroth GTM and GTMRspecify 1,000 emergency stops before lossof accuracy, compared with one time forcompetitive gearboxes.

Precision in motion

GTM and GTMR gearboxescan be fully integrated withRexroth’s complete line of

motors and drives.

Planetary and hypoid gearboxes from Rexroth have many innovative benefits for use ina broad variety of applications. Installed in environments from machine tools to printingmachines, these robust, compact systems provide precision in motion.

Page 3: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

3Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

Product overview

GTM Series In-Line Planetary Gearboxes• Solid output shaft with or without keyway

• Ratios from 3:1 to 100:1

• Maximum input speeds up to 10,000 rpm

• Nominal output torque up to 3,000 Nm

GTMR-S Series Right-Angle, Solid-Shaft Hypoid Gearboxes• Solid output shaft with or without keyway

• Zero-backlash, metal-bellows input coupling canbe fit to any servo motor

• Ratios from 3:1 to 100:1 (ratios 30:1 and higher useplanetary gearing for the first stage and hypoidgearing for the second stage)

• Nominal output torque up to 1,440 Nm

GTMR-H Series Right-Angle, Hollow-Shaft Hypoid Gearboxes• Hollow output shaft with high-quality shrink ring

to ensure zero backlash

• Zero-backlash, metal-bellows input coupling canbe fit to any servo motor

• Ratios from 3:1 to 100:1 (ratios 30:1 and higher useplanetary gearing for the first stage and hypoidgearing for the second stage)

• Nominal output torque up to 1,440 Nm

GTMR-D Series Right-Angle, Dual-Shaft Hypoid Gearboxes• Dual coaxial output shafts

• Zero-backlash, metal-bellows input coupling canbe fit to any servo motor

• Ratios from 3:1 to 100:1 (ratios 30:1 and higher useplanetary gearing for the first stage and hypoidgearing for the second stage)

• Nominal output torque up to 1,440 Nm

Page 4: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

4 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

1. The robust output shaftensures the highest possibleaxial loads.

2. High radial force capability ismade possible through the useof large tapered roller bearings.

3. High accuracy is achievedthrough the use of highly-accurate, precision-groundgearing.

4. Robust Viton seals ensurepermanent IP65 integrity.

5. High torsional rigidity isachieved from an optimizedsun gear with stable supportfor the planetary gears at both ends.

6. Low-noise operations are theresult of optimized gear shapes.

7. Compact design isaccomplished by usingseparated drive bearings.

8. A special galvanic surfacetreatment makes the casingenvironmentally resistant.

9. Hermetically-sealed casing is accomplished by using capscrews rather than simpleplugs.

10. An integrated surface-treatedring-gear assists in thelubrication of the planetarygears.

11. High acceleration torquecapabilities are achieved byenforcing precision internalmachining tolerances.

12. Low gear temperatures andminimized losses are the resultof using the smallest possibleseal diameters.

13. The compression couplingensures backlash-free powertransmission.

14. A dual-stage version of theGTM in-line planetary gearboxis available for ratios greaterthan 10:1 (up to 100:1).

GTM Series In-Line Planetary Gearboxes

1

2

3

4

512

6

9

13

7

8

11

10

14

Page 5: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

5Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

1. Newly-designed Gleason hypoidgearing provides for hightransmission ratios and exactregulating accuracies.

2. Reduced backlash is the result of optimized manufacturingtechniques.

3. Maintenance-free thanks tolifetime lubrication.

4. High-quality tapered rollerbearings ensure a high tiltresistance and ideal bearingloads.

5. Backlash-free torquetransmission is achieved by using a frictional connectionbetween shaft and hub.

6. One-piece, light-weight, cast-aluminum casing provides forhighest stiffness.

7. Optimized contact pattern of thehypoid gearing results in eventooth loads.

8. High efficiency - up to 96%.

9. The GTMR right-angle hypoidgearbox is available in a dualstage version for ratios greaterthan 15:1 (up to 100:1).

GTMR Series Right-Angle Hypoid Gearboxes

2

1

3

4

5

6

8

7

Worm

Hypoid

Spiral Bevel

More rolling action,lower torque throughput,

but higher mechanicalefficiency

More sliding action,higher torque throughput,but lower mechanicalefficiency

9

The placement of the input gearalong the arc of the driven gear hasa significant impact on load-carryingcapabilities and mechanicalefficiency.

Page 6: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

6 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

Nominal output torque T2N (Nm) 3 N/A N/A 120 280 720 18004 25 85 170 420 1020 2500

Also applicable for S1operation 5 25 100 200 500 1200 30007 25 85 170 420 1020 2500

10 20 60 120 280 720 1800 Emergency stop torque 1) T2Not (Nm) 3 N/A N/A 400 840 2160 5400

4 100 280 560 1260 3060 75005 100 330 660 1500 3600 90007 80 280 560 1260 3060 7500

10 80 200 400 840 2160 5400 Max. acceleration torque 2) T2B (Nm) 3 N/A N/A 220 560 1440 3000

4 50 170 340 840 2040 50005 50 200 400 1000 2400 60007 50 170 340 840 2040 5000

10 40 110 220 560 1440 3600

Max. input speed n1Max (rpm) 3 N/A N/A 4000 3200 2500 20004 5000 5000 4000 3200 2500 20005 6300 6300 5000 4000 3200 25007 8000 8000 6300 5000 4000 3000

10 10000 10000 8000 6300 5000 3500

Nominal input speed n1N (rpm) 3 N/A N/A 2300 1800 1300 8004 3000 3000 2500 2000 1500 10005 4000 4000 3000 2500 2000 12007 5000 5000 4000 3000 2500 1500

10 6000 6000 5000 4000 3000 2000 Backlash — standard (arcmin) < 6 < 6 < 4 < 4 < 4 < 4Backlash — reduced < 3 < 3 < 2 < 2 < 2 < 2 Torsional rigidity Ct (Nm/ 3.5 8.2 24 48 149 340

arcmin) Moments of inertia i1 (kg cm2) 3 N/A N/A 2.80 8.20 36.0 128.0

4 0.16 0.57 2.10 7.00 24.8 97.65 0.16 0.49 1.74 5.80 19.6 76.47 0.15 0.42 1.46 4.80 14.8 59.9

10 0.14 0.39 1.32 4.30 12.6 51.7 Max. axial force FA (N) 3200 4500 7000 10000 15000 28000 Max. radial force 3) FR (N) 2700 3700 6700 9200 14000 27000 Lifetime Lh(h) > 20000 > 20000 > 20000 > 20000 > 20000 > 20000 Efficiency η > 97 % > 97 % > 97 % > 97 % > 97 % > 97 % Weight m (kg) 1.6 2.9 5.7 11.5 27 62 Operating noise at Lp (dB(A)) < 63 < 68 < 68 < 72 < 72 < 72(nan = 3000 rpm) Lubrication Lifetime lubrication, closed system Surface protection Aluminum and galvanically-treated steel Installation position Any, always interchangeable Operating temperature - 10° C to + 90° C Direction of rotation Same as input and output speed Type of protection IP 65

GTM GTM GTM GTM GTM GTM060 075 100 140 180 240Technical Data i

Size:

1) Max. 1000 times in gearbox lifetime.2) At a maximum of 1000 cycles per hour, otherwise refer to the correction factor on page 13.

Percentage of the overall running time less than 5% and duration of the impulse under 0.3 sec.3) Resultant force at center of output shaft at output speed of 300 rpm.

GTM In-Line Planetary Gearbox,single stage

Page 7: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

7Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

D1 D2 D3

max

. D6

D7

L12

L2 L3

L4

L1

L6

L22B

L7

B

L13

D8

D945°

90°

GTM GTM GTM GTM GTM GTM060 075 100 140 180 240

Size:

Dimensions (mm)

DR M5 M8 M12 M16 M20 M20

D1(g6) 60 70 90 130 160 200

D2 20 28 40 45 60 95

D3(k6) 16 22 32 40 55 85

D4 5.5 6.6 9 11 13 17

D5 68 85 120 165 215 290

D6*(F7) Min. 6 14 19 24 32 42

Max. 14 24 32 38 48 60

FV* 6.5 17 40 75 120 120

L1** 129.5 155.7 193.1 245.6 290 399.5

L2(+0.5) 28 36 58 82 82 130

L3 20 20 30 30 30 40

L4 7.7 8 10 12.5 22 30

L6** Min. 15 23 30 32 45 55

Max. 30 40 50 60 82 110

L7** 3.5 4.5 5.5 5.3 8 8

L11 62 76 101 141 182 242

L12 2 2 2 3 3 3

L13** Min. 62 80 106 141 182 242

L14 22 28 50 70 70 110

L15 3 4 4 5 5 7.5

L16 5 6 10 12 16 22

L17 18 24.5 35 43 59 90

L22** 4.5 7.5 8.5 7.5 9 10

TA*** Nm 5.5 23 79 195 390 390

D7/D8/D9 Motor connection dimensions for all common servomotors are available

Centering DIN 332 (G)Optionally with key as per DIN 6885 sheet 1

L16

L17

L15 L14C

C

A

A

L11

D4

D5

*FV = Pretensioning force

**Dimensions depending onmotor.

***TA = Tight torque for pully

B-B A-A

C-C

TA

DR

FV

Page 8: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

8 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

Nominal output torque T2N (Nm) 16, 20, 35, 40, 70 25 85 170 420 1020Also applicable for S1operation 25, 50 25 100 200 500 1200

100 20 60 120 280 720

Emergency stop torque 1) T2Not (Nm) 16, 20, 35, 40, 70 100 280 560 1260 306025, 50 100 330 660 1500 3600100 80 200 400 840 2160

Max. acceleration torque 2) T2B (Nm) 16, 20, 35, 40, 70 50 170 340 840 2040

25, 50 50 200 400 1000 2400100 40 110 220 560 1440

Max. input speed n1Max (rpm) 16 5000 5000 4000 3200 250020, 25, 35 6300 6300 5000 4000 320040, 50, 70, 100 10000 10000 8000 6300 5000

Nominal input speed n1N (rpm) 16 3000 3000 2500 2000 150020, 25, 35 4000 4000 3000 2500 200040, 50, 70, 100 6000 6000 5000 4000 3000

Backlash — standard (arcmin) < 8 < 8 < 6 < 6 < 6Backlash — reduced < 6 < 6 < 4 < 4 < 4 Torsional rigidity Ct (Nm/ 3.5 8.2 24 48 149

arcmin) Moments of inertia l1 (kg cm2) 16* 0.12 0.47 1.59 5.35 7.25

20 0.12 0.47 1.56 5.29 6.9525 0.12 0.47 1.54 5.25 6.7035 0.12 0.47 1.53 5.21 6.5340 0.10 0.47 1.44 4.96 5.5150 0.10 0.47 1.44 4.96 5.4570 0.10 0.46 1.44 4.94 5.42100 0.10 0.46 1.44 4.94 5.39

Max. axial force FA (N) 3200 4500 7000 10000 15000 Max. radial force 3) FR (N) 2700 3700 6700 9200 14000 Lifetime Lh (h) > 20000 > 20000 > 20000 > 20000 > 20000 Efficiency η [%] > 94 % > 94 % > 94 % > 94 % > 94 % Weight m (kg) 2.2 3.8 7.5 15.0 35.0 Operating noise at Lp [dB(A)] < 63 < 68 < 68 < 72 < 72(nan = 3000 rpm) Lubrication Lifetime lubrication, closed system Surface protection Aluminum and galvanically-treated steel Installation position Any, always interchangeable Operating temperature - 10° C to + 90° C Direction of rotation Same as input Degree of protection IP 65

GTM GTM GTM GTM GTM060 075 100 140 180Technical Data i

Size:GTM In-Line Planetary Gearbox,two stage

*Preliminary

1) Max. 1000 times in gearbox lifetime.2) At a maximum of 1000 cycles per hour, with the dynamic factor K2. Page 13 to be taken into consideration in any other case.3) Resultant force at center of output shaft at output speed of 300 rpm.

Page 9: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

L16

L17

L15 L14C

C

9Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

GTM GTM GTM GTM GTM060 075 100 140 180

Size:

Dimensions (mm)

DR M5 M8 M12 M16 M20

D1(g6) 60 70 90 130 160

D2 20 28 40 45 60

D3(k6) 16 22 32 40 55

D4 5.5 6.6 9 11 13

D5 68 85 120 165 215

D6*(F7) Min. 6 14 19 24 24

Max. 14 24 32 38 38

L1* 153.0 182.2 236.0 296.0 335.2

L2(+0.5) 28 36 58 82 82

L3 20 20 30 30 30

L4 7.7 8 10 12.5 22

L6* Min. 15 23 30 32 45

Max. 30 40 50 60 82

L7* 3.5 4.5 5.5 5.3 8

L11 62 76 101 141 182

L12 2 2 2 3 3

L13* Min. 62 80 106 141 182

L14 22 28 50 70 70

L15 3 4 4 5 5

L16 5 6 10 12 16

L17 18 24.5 35 43 59

L22* 4.5 7.5 8.5 7.5 9

D7/D8/D9 Adaptations available for all common servomotors; dimensions are variable. Please request specific installation drawing.

*Dimensions depending on motor.

D1 D2 D3

max

. D6

D7

L12

L2 L3

L4

L1

L6

L22B

L7

B

L13

D8

D945°

90°

Centering DIN 332 (G)Optionally with key as per DIN 6885 sheet 1 A

A

L11

D4

D5

B-B A-A

TA

DR

FV

Page 10: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

10 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

GTMR GTMR GTMR GTMR GTMR GTMR 090 115 140 170 215 260 Technical Data i

Size:

Nominal output torque T2N (Nm) 3, 4, 5, 6, 8, 10, 40, 50, 70 35 70 140 260 720 1440 12,15 25 50 95 180 510 1020 30 35 70 140 260 540 1200 100 35 70 140 260 550 1300 Emergency stop torque 1) T2Not (Nm) 3, 4, 5, 6, 8, 10, 40, 50, 70 70 140 280 520 1440 2880 12,15 50 100 190 360 1020 2040 30 70 140 280 520 1440 2880 100 70 140 280 520 1440 2880 Max. acceleration torque 2) T2B (Nm) 3, 4, 5, 6, 8, 10, 40, 50, 70 53 105 210 390 1080 2160 12, 15 38 75 143 270 765 1530 30 53 105 210 390 780 1680 100 53 105 210 390 1000 2160 Max. input speed n1Max (rpm) 3, 4, 5, 6, 8, 10, 12,15 8000 8000 7000 6000 5000 4500 30, 40, 50, 70, 100 6000 6000 6000 6000 6000 4500

Nominal input speed n1N (rpm) 3, 4, 5, 6, 8, 10, 12, 15 6000 6000 5000 4000 3000 2500 30, 40, 50, 70, 100 3000 3000 3200 3200 2800 2500

Backlash — standard Ø (arcmin) 3, 4, 5, 6, 8, 10, 12, 15 < 5 < 5 < 4 < 4 < 4 < 4 30, 40, 50, 70, 100 < 7 < 7 < 6 < 6 < 6 < 6

Backlash — reduced 3, 4, 5, 6, 8, 10, 12, 15 < 3 < 3 < 2 < 2 < 2 < 2 30, 40, 50, 70, 100 < 4 < 4 < 3 < 3 < 3 < 3 Torsional rigidity C1 (Nm/ 3.5 7 17.5 39 103 210 arcmin) Moments of inertia l1 (kg/cm2) 3 0.43 1.10 2.50 6.70 24.0 72.0 4 0.31 0.77 1.80 4.70 16.0 48.0 5 0.24 0.63 1.40 3.80 13.0 37.0 6 0.22 0.56 1.30 3.40 11.0 28.0 8 0.18 0.47 1.10 2.80 8.60 24.0 10 0.16 0.43 1.00 2.50 7.50 20.0 12 0.15 0.41 0.93 2.40 6.90 18.0 15 0.14 0.39 0.89 2.30 6.30 16.0 30, 40, 50, 70, 100 0.16 0.18 0.41 0.49 0.97 3.78

Max. axial force FA (N) 1650 2450 3600 5000 7500 11250 Max. radial force 3) FR (N) 3300 4900 7200 10000 15000 22500

Idling torque (n1 = 3000 rpm) T 01 (Nm) Lifetime Lh (h) > 30000 > 30000 > 30000 > 30000 > 30000 > 30000 Efficiency η 3, 4, 5, 6, 8, 10 > 96 % > 96 % > 96 % > 96 % > 96 % > 96 % 12, 15 > 93 % > 93 % > 93 % > 93 % > 93 % > 93 % 30, 40, 50, 70, 100 > 92 % > 92 % > 92 % > 92 % > 92 % > 92 % Weight m (kg) 3, 4, 5, 6, 8, 10, 12, 15 2.5 5.0 8.5 15.0 28.0 48.0 30, 40, 50, 70, 100 3.5 6.0 9.9 16.4 30.2 52.5

Operating noise L [dB(A)] < 66 < 66 < 68 < 68 < 70 < 72

Lubrication Lifetime lubrication, closed system Surface protection Prime coat RAL 9005 - dull black Installation position any Operating temperature - 10° C to + 100° C Direction of rotation Same as motor Type of protection IP 64

1) Max. 1000 times in gearbox lifetime.2) At a maximum of 1000 cycles per hour, with the correction factor to be taken into consideration in any other case.3) Resultant force: center of output shaft at output speed of 400 rpm.

GTMR Right-Angle Hypoid Gearbox

Page 11: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

B

f2p2 p2

n

12

k2

p 2p 2

q

Design SL

d 2

m+0

.5

u w

d1

l 1

gA

g

b

v

b

s

p 1p 1

f1

p1 p1

B

s

d

w

Design HL

d

w

d

s

*

h1h0

hs

*

Design HR Design SR Design SD

Ø

Ø

11Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

GTMR GTMR GTMR GTMR GTMR GTMR090 115 140 170 215 260

Size:

Dimensions (mm)

A 60 80 100 120 146 196

B 90 115 140 170 215 260

fs 71.5 79.5 93 107 127 159

f2 80 90 110 130 175 220

g 13.5 8.5 8 8 10 10

h0 20 22 26 29 32 34

h1 23 25 29 33 37 40

k2 M6 M8 M10 M12 M16 M16

l1 23/26/30 26/30/40 30/40/50 40/50/60 50/60/80 60/80/80

l2 35 40 50 60 90 110

m

n 1.5 1.5 2 2 2 2

o 9 14 18 23 32 42

p1 39 49 59 72 91 112

p2 22 27 33 40 52 70

q 8 10 11 13 15 17

s

u x f1 55 x 130 75 x 168 90 x 191 115 x 220 140 x 260 190 x 335

- 90 x 168 115 x 191 140 x 220 190 x 265 260 x 345

75 x 140 90 x 180 115 x 201 140 x 235 190 x 280 -

Ø b(g6) 89 105 125 150 195 245

Ø dw (H7) 20 25 30 40 55 70

Ø ds (f7) 24 30 36 50 68 80

Ø d1 9/11/14 11/14/19 14/19/24 19/24/32 24/32/38 32/38/48

Ø d2 (k6) 20 24 32 40 55 70

Ø k1 6.6 9 11 14 17.5 17.5

Ø v

Ø v, Ø w, s, m Dimensions are motor specific

Ø w

GTMR-SL connected to motor

*hollow shaftrequiresshrink ring

Page 12: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

12 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

Determine dynamic factor kl

Select suitable ratio

yes

yes

yes

no

no

noCyclic duty

Continuous duty

no

yes

Select lower ratio ordecrease input speed

yes

yes

yes

Determine cycle duration (s)

Determine on-time (s)

Determine duty cycle

Determine of no. of cycles/hr

Determine peak output acceleration torque T2max

Duration percentage of peak torque Emax [%]

Determine frequency factor k2

Determine permissible peak output accelerationtorque T2Bzul

Determine mean output acceleration torque T2m

Determine bearing load at output

Selection completed

n1max ≤ n1 Max.

n1m ≤ n1N

T2max ≤ T2Bzul

T2not ≤ T2Not

T2m ≤ T2N

Fr ≤ FR

Fa ≤ FA

ED ≥ 60%EZ ≥ 20 min

no

Select larger gearbox sizeor different ratio

no

Determine mean output speed n1m

(ta + tb + tc)

3600 [per hour]

max. output speed

ta + tb +...+ tn

n2a* ta + n2b* tb +...+ n2n* tn

duration of max. torque T2max

3

3

no

EZ = ta + tb + tc [min]

ED =(ta + tb + tc + td) * 100 [%]

Cycle duration = ta + tb + tc + td [s]

Nos. of cycles =cycle duration (s)

kl from diagram 1

i from catalog

n1Max from catalog

n1max = i * max. speed during load collective [rpm]

T2max = max. torque during load collective [Nm]

Emax = cycle duration * 100 [%]

k2 from diagram 2

T2N from catalog

T2Bzul = T2N * kl * k2 [Nm]

T2not depending on application

FR , FA from catalog

Fa = axial force on output shaft

Fr = resultant radial force actingon center of output shaft

T2Not from catalog

n2m = √(n2a3 * ta + n2b3 * tb+ n2n3 * tn ) [rpm]

n1m = i * n2m [rpm]

n1N from catalog

T2m

= √(n2a * ta *T2a3 + n2b * tb * T2b3 +...+n2n* tn * T2n3)[Nm]

i = possible input speed

Page 13: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

13Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

Diagram 1: Dynamic factor k1

For the peak torques caused by shortacceleration times with high cycle rates, the dynamic factor needs to be considered. For applications with fewer than 1,000 cycles per hour and for continuous duties, the dynamic factor k1 = 1.0.

Diagram 2: Frequency factor k2

There is a substantial influence of highoutput torques on the gearbox lifetime.The frequency factor takes intoaccount the duration percentage ofmaximum acceleration torque of thetotal cycle. For continuous duties, thefrequency factor k2 = 1.0.

Typical load collective at gearbox output

1.0

0.8

0.6

0.4

0.2

0.0

0.9

0.7

0.5

0.3

0.1

0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000

Dyn

amic

Fac

tor

k1

Number of cycles (per hour)

2.5

2.0

1.5

1.0

0.5

0.00 10 20 30 40 50 60 70 80 90 100

Emax (%)

Freq

uenc

y F

acto

r k2

T2not

T2B

T2N

n2Max

n2N

ta tb

EZ

Cycle durationStart Stop

n2a = n2c = 1/2 * n2b

n2b

T2c

T2b

T2a = T2max

T2not

tc td

Page 14: GTM/GTMR Series High-Precision Gearboxes for Servo Motors · PDF fileGTM/GTMR Series High-Precision Gearboxes for Servo Motors ... The GTM in-line planetary gearbox ... Planetary and

14 Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

1. Gearbox Model1.1 High-precision in-line planetary gear reducer = GTM1.2 High-precision right-angle hypoid gear reducer = GTMR

2. Frame Size2.1 GTM Series . . . . . . . . . . . . . . . = 060, 075, 100, 140, 180, 2402.2 GTMR Series . . . . . . . . . . . . . . = 090, 115, 140, 170, 215, 260

3. Output Shaft Direction/OrientationFor GTM Series:

3.1 Solid Shaft (standard) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = NNFor GTMR Series:

3.2 Solid Shaft on Left preferred . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = SL3.3 Solid Shaft on Right . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = SR3.4 Solid Shaft on Left and Right (dual shaft) . . . . . . . . . . . . . . . . . . . . . . = SD3.5 Hollow Shaft on Left (shrink ring on right) preferred . . . . . . . . . . . . . . = HL3.6 Hollow Shaft on Right (shrink ring on left) . . . . . . . . . . . . . . . . . . . . . . = HR

4. Number of Stages4.1 GTM Ratio: 3, 4, 5, 7, 10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = 14.2 GTM Ratio: 20, 25, 35, 40, 50, 70, 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . = 24.3 GTMR Ratio: 3, 4, 5, 6, 8, 10, 12, 15 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = 14.4 GTMR Ratio: 30, 40, 50, 70, 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = 2

5. Reduction Ratio5.1 Example 7:1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = 007

6. Keyway/Backlash Options6.1 Shaft w/keyway; Standard Backlash (not available with GTMR-H) . . . . . . . . . . . . . . . . . . . = A6.2 Smooth shaft; Standard Backlash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = B6.3 Shaft w/keyway; Reduced Backlash (not available with GTMR-H) . . . . . . . . . . . . . . . . . . . . = C6.4 Smooth shaft; Reduced Backlash . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . = D

7. Motor Designation (see chart below for Rexroth Motors) ***

100/ 132/ 160/025 037 041 047 063 065 071 090 093 098 104 112 115 131 134 164 184

2AD — — — — — — — — — — 09 — — — 11 12** 13**

ADF — — — — — — — — — — 08 — — — 11 — —

ADP — — — — — — — — — — 09 — — — 11 12** 13**

MAC 02 — 03 — 04 — 05 06 06 — — 09 09 — — 11 —

MDD 02 — 03 — — 04 05 06/07* 06/07* — — 09/08* 09/08* — — — —

MHD — — 03 — — — 05 06 16 — — 09 19 15 — — —

MHP — — 03 — — — 05 06 16 — — 09 19 15 — — —

MKD 02 — 03 — — — 05 06 — — — 09 — — — — —

MKE — — — 14 — — — — — 06 — — — — — — —

* If liquid cooled.** Limited to single-stage reduction.*** For third-party motors, please contact Bosch Rexroth.

Gearbox ordering method

Example: G T M R 1 4 0 - N N 1 - 0 0 7 A 0 9

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15Benefits | Technical Data | Configuration and Selection | Bosch Rexroth

World-class solutionsRexroth’s drive and control solutions are basedon its complete range of best-in-class products,its applications engineering expertise, and itscomprehensive knowledge of machines and theenvironments in which they work. Each Rexrothproduct is backed with sales and service offices inmore than 80 countries around the world.

Bosch Rexroth Corporation is organized intosix divisions:

• Industrial Hydraulics

• Electric Drives and Controls

• Linear Motion and Assembly Technologies

• Pneumatics

• Service Automation

• Mobile Hydraulics

Electric Drives and Controls

As a result of our solid heritage and our diversetechnical portfolio, Rexroth has emerged as one ofthe world’s foremost providers of servo-basedmotion control systems. Our tradition of productexcellence and our longstanding commitment toopen systems allows us to offer total solutions for allof your drive and control needs. Our products havebeen successfully integrated into large and smallmachine control operations around the world.

Partnerships start with knowing your businessTo better address your unique challenges, ourproducts are segmented into five industry-specific system solutions:

• Machine Tool

• Food & Packaging

• Printing & Converting

• General Automation

• Mounting/Handling/Car Body

With our expertise in your industry, we are betterable to partner with you to provide solutions thatmeet your demands for productivity, performance,and reliability. It all begins with an initialassessment involving the engineering, and even thephysics of the application. Then, based on thoseobjectives, and our experience in your markets, wedesign a solution that delivers the throughput,quality, precision, and performance required.

Bosch Rexroth.The Drive & Control Company

Rexroth leads the industry in the design and development of products,equipment, and devices that control movement in machinery. We have builtstrong partnerships with our customers, who rely on us for solutions that deliverconsistency, accuracy, and repeatability in their equipment. Our drive andcontrol solutions improve the performance and throughput of our customers’machines, while making them easier to operate and maintain.

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Bosch Rexroth CorporationElectric Drives and Controls5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201www.boschrexroth-us.com

Printed in the United States

Bosch Rexroth CorporationCorporate Headquarters5150 Prairie Stone ParkwayHoffman Estates, IL 60192-3707Telephone (847) 645-3600Facsimile (847) 645-6201

Bosch Rexroth CorporationIndustrial Hydraulics2315 City Line RoadBethlehem, PA 18017-2131Telephone (610) 694-8300Facsimile (610) 694-8467

Bosch Rexroth CorporationLinear Motion andAssembly Technologies816 E. Third StreetBuchanan, MI 49107Telephone (616) 695-0151Facsimile (616) 695-5363

Bosch Rexroth CorporationPneumatics1953 Mercer RoadLexington, KY 40511-1021Telephone (859) 254-8031Facsimile (859) 281-3491

Bosch Rexroth CorporationMobile Hydraulics1700 Old Mansfield RoadWooster, OH 44691-0394Telephone (330) 263-3300Facsimile (330) 263-3333

74200 EN 01/03