GH-Series, Überblick




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®

Precision Reduction Gear RV

TM

High-speed gearhead

G H   S E R I E S

CAT.150220

(Issued on Feb. 20, 2015)

Rev. 010

● Nabtesco, VIGOGREASE, RV are registered trademarks or trademarks of Nabtesco Corporation.
● Specifications are subject to change without notice.
● The PDF data of this catalog can be downloaded from the following website.
http://precision.nabtesco.com/
If any addition or modification is made to the published information, the PDF data may be updated before the printed catalog.
Due to this, please note that some contents of the PDF data may be changed or revised from those in this catalog.
● Unauthorized reprinting, reproduction, copying, or translation of this catalog in whole or in part is strictly prohibited.

Europe and Africa

North and South America

China

Asia and others

Nabtesco Precision Europe GmbH

Tiefenbroicher Weg 15, 40472 Düesseldorf, Germany
TEL: +49-211-173790  FAX: +49-211-364677
E-MAIL: info@nabtesco.de   www.nabtesco.de

Nabtesco Motion Control Inc. in U.S.A (North America & South America)

23976 Freeway Park Drive, Farmington Hills, MI 48335, USA
TEL: +1-248-553-3020  FAX: +1-248-553-3070
E-MAIL: engineer@nabtescomotioncontrol.com   www.nabtescomotioncontrol.com

Shanghai Nabtesco Motion-equipment Co., Ltd.

Room 1706, Hong Jia Tower, No. 388 Fu Shan Road, Pudong New Area, Shanghai 200122, China
TEL: +86-21-3363-2200  FAX: +86-21-3363-2655
E-MAIL: info@nabtesco-motion.cn   www.nabtesco-motion.cn

Nabtesco Corporation

Osaka Sales Office

21st Fl, Dojima Avanza, 1-6-20 Dojima, Kita-ku, Osaka 530-0003, Japan
TEL: +81-6-6341-7180  FAX: +81-6-6341-7182

Tsu Plant (Engineering Department)

594 Icchoda, Katada-cho, Tsu, Mie 514-8533, Japan
TEL: +81-59-237-4600  FAX: +81-59-237-4610
E-MAIL: P_Information@nabtesco.com   www.nabtesco.com

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GH 7

GH 17

GH 24

GH 40

High speed Gearheads taking

your servomotor performance to the limit

GH

SERIES,

The

GH

SERIES provides significant advantages in terms of ease-of-use. It is

based on a highly successful product, the Precision Reduction Gear RV, used
in various applications around the world.

1. In the case where Nabtesco confirms that a defect of the Product was caused due to Nabtesco’s design or

manufacture within the Warranty Period of the Product, Nabtesco shall repair or replace such defective

Product at its cost.  The Warranty Period shall be from the delivery of the Product by Nabtesco or its distribu-

tor to you (“Customer”) until the end of one (1) year thereafter, or the end of two thousand (2,000) hours

running of the Product installed into Customer’s equipment, whichever comes earlier.

2. Unless otherwise expressly agreed between the parties in writing, the warranty obligations for the Product

shall be limited to the repair or replacement set forth herein.  OTHER THAN AS PROVIDED HEREIN,

THERE ARE NO WARRATIES ON THE PRODUCT, EXPRESS OR IMPLIED, INCLUDING WITHOUT

LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE.

3. The warranty obligation under the Section 1 above shall not apply if:

a) the defect was caused due to the use of the Product deviated from the Specifications or the working

conditions provided by Nabtesco;

b) the defect was caused due to exposure to foreign substances or contamination (dirt, sand etc.)
c) lubricant or spare part other than the ones recommended by Nabtesco was used in the Product;
d) the Product was used in an unusual environment (such as high temperature, high humidity, a lot of dust,

corrosive/volatile/inflammable gas,  pressurized/depressurized air, under water/liquid or others except for

those expressly stated in the Specifications);

e) the Product was disassembled, re-assembled, repaired or modified by anyone other than Nabtesco;
f ) the defect was caused due to the equipment into which the Product was installed;
g) the defect was caused due to an accident such as fire, earthquake, lightning, flood or others; or
h) the defect was due to any cause other than the design or manufacturing of the Product.

4. The warranty period for the repaired/replaced Product/part under the Section 1 above shall be the rest of the

initial Warranty Period of the defective Product subjected to such repair/replace.

Warranty

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01

Table of Contents

Features and Configurations

02

Principle of Operation

03

Specifications

04

Considering the use of the GH

SERIES

06

Technical Information

Glossary

07

08

Selection Flow Chart

10

Performance

11

Model Code

12

External Dimension Drawing

Reduction Gear

18

External Dimension Drawing

Input Spline Set

22

External Dimension Drawing

Motor Flange

24

Combination with Non-standard Product

26

Engineering Notes

30

Appendix

Back inside cover

Warranty

17

Model Code Selection

(Precautions)

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02

03

High reliability
High rigidity
High precision
High speed

Heavy load support

Maximum ease of use

The double-end support design and unique pin gear

mechanism provide the following advantages:
(1)  Capable of 7 times the rated torque
(2)  High rigidity as well as small backlash [6 arc.min]
(3)  Capable of high output speed with low reduction ratio

(1/11 to 1/31)
(4)  High torque density

A set of internal main bearings (large angular ball bearings)
enables complete support of heavy external loads.

(1)  Pre greased
(2)  Easy motor mounting thanks to the special input spline
and motor flange.

Rotation direction

The rotation direction of the output shaft is same as that of the input spline.

Features and Configurations

Middle flange

Motor flange (option)

Input spline set (option)

Hold flange

Crankshaft

Main bearing

Pin

Oil seal

Shaft

Input gear

Output flange

Spur gear

Case

RV gear

Oil seal

Fig. 3 Second reduction section

Fig. 1 First reduction section

Fig. 2 Crankshaft section

Principle of Operation

Since they are directly connected, the crankshafts

have the same rotational speed as the spur gears

<Fig. 1>

.

2.

6.

As the crankshafts revolve one complete rotation,

the RV gears revolve eccentrically one pitch of a pin

(crank movement). As a result of this, the RV gears

rotate one tooth in the direction opposite to the

rotation of the crankshafts

<Fig. 3>

.

8.

The total reduction ratio is the product of the first

reduction ratio multiplied by the second reduction

ratio.

7.

The rotation is then transmitted to the shaft (output

shaft) via the crankshaft. At this time, the shaft

rotation speed can be reduced in proportion to the

number of pins against the crankshaft. This is the

second reduction section

<Fig. 3>

.

5.

Pins are arrayed in a constant pitch in the grooves

inside the case. The number of pins is just one

larger than the number of RV teeth

<Fig. 3>

.

4.

When the crankshafts rotate, the RV gears mounted

on the eccentric sections also revolve eccentrically

around the input axis (crank movement)

<Fig. 2>

.

3.

Two RV gears are mounted around the needle

bearings on the eccentric region of the crankshaft.

(In order to balance the equal amount of force, two

RV gears are mounted)

<Fig. 2>

.

1.

Rotation of the servomotor is transmitted through

the input gear to the spur gears, and the speed is

reduced accordingly with the gear ratio between the

input gear and the spur gears. This is the first

reduction section

<Fig. 1>

.

Crankshaft

Spur gear

Input gear

Crankshaft

Spur gear

Rotation

Eccentric region

Needle

bearing

RV gear

Rotation

Crank

movement

Crankshaft

(connected to the spur gear)

Shaft

RV gear

Case

Pin

Crankshaft Rotation angle 0˚

Rotation angle 180˚

Rotation angle 360˚

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02

03

High reliability
High rigidity
High precision
High speed

Heavy load support

Maximum ease of use

The double-end support design and unique pin gear

mechanism provide the following advantages:
(1)  Capable of 7 times the rated torque
(2)  High rigidity as well as small backlash [6 arc.min]
(3)  Capable of high output speed with low reduction ratio

(1/11 to 1/31)
(4)  High torque density

A set of internal main bearings (large angular ball bearings)
enables complete support of heavy external loads.

(1)  Pre greased
(2)  Easy motor mounting thanks to the special input spline
and motor flange.

Rotation direction

The rotation direction of the output shaft is same as that of the input spline.

Features and Configurations

Middle flange

Motor flange (option)

Input spline set (option)

Hold flange

Crankshaft

Main bearing

Pin

Oil seal

Shaft

Input gear

Output flange

Spur gear

Case

RV gear

Oil seal

Fig. 3 Second reduction section

Fig. 1 First reduction section

Fig. 2 Crankshaft section

Principle of Operation

Since they are directly connected, the crankshafts

have the same rotational speed as the spur gears

<Fig. 1>

.

2.

6.

As the crankshafts revolve one complete rotation,

the RV gears revolve eccentrically one pitch of a pin

(crank movement). As a result of this, the RV gears

rotate one tooth in the direction opposite to the

rotation of the crankshafts

<Fig. 3>

.

8.

The total reduction ratio is the product of the first

reduction ratio multiplied by the second reduction

ratio.

7.

The rotation is then transmitted to the shaft (output

shaft) via the crankshaft. At this time, the shaft

rotation speed can be reduced in proportion to the

number of pins against the crankshaft. This is the

second reduction section

<Fig. 3>

.

5.

Pins are arrayed in a constant pitch in the grooves

inside the case. The number of pins is just one

larger than the number of RV teeth

<Fig. 3>

.

4.

When the crankshafts rotate, the RV gears mounted

on the eccentric sections also revolve eccentrically

around the input axis (crank movement)

<Fig. 2>

.

3.

Two RV gears are mounted around the needle

bearings on the eccentric region of the crankshaft.

(In order to balance the equal amount of force, two

RV gears are mounted)

<Fig. 2>

.

1.

Rotation of the servomotor is transmitted through

the input gear to the spur gears, and the speed is

reduced accordingly with the gear ratio between the

input gear and the spur gears. This is the first

reduction section

<Fig. 1>

.

Crankshaft

Spur gear

Input gear

Crankshaft

Spur gear

Rotation

Eccentric region

Needle

bearing

RV gear

Rotation

Crank

movement

Crankshaft

(connected to the spur gear)

Shaft

RV gear

Case

Pin

Crankshaft Rotation angle 0˚

Rotation angle 180˚

Rotation angle 360˚

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04

05

*1. The rating table shows the specification values of each reduction gear.

*2. The allowable output speed may be limited by heat depending on the operation rate.

If you use this product with the operation rate per cycle exceeding 50% or allowable output speed during continuous operation, contact us.

*3. For the inertia moment value, both the reduction gear and the input gear are taken into consideration. This, however, does not include the inertia moment

of the input spline.

Note:

1.  The mechanical brake of the motor generates the momentary excessive torque in the reduction gear. Make sure that the value does not exceed the

momentary maximum allowable torque.

2. The specifications above are based on Nabtesco evaluation methods; this product should only be used after confirming that it is appropriate for the

operating conditions of your system.

Specifications

Allowable Torque

Model

Code

Nm

(Kgfm)

Nm

(Kgfm)

Nm

(Kgfm)

rpm

rpm

arc.min

Ratio

Rated

Torque

(To)

Ratio

Code

rpm

Rated

Output

Speed

(No)

Backlash

Kgm

2

(Kg)

Inertia Moment I

(I=GD

2

/4)

Input Shaft

Equivalent

(*3)

Mass

Startup/

Stop Torque

Momentary

Maximum

Torque

Intermittent

Operation

Continuous

Operation

Allowable Output Speed

(*2)

Rating Table

(*1)

Shaft Type External Load Diagram

α

1

L

1

L

2

W

1

W

2

α

1

L

1

L

2

W

1

W

2

Flange Type External Load Diagram

GH7

GH17

GH24

GH40

GH100

461/41

21

153/5

11

21
31

11

21
31

419/39

21

723/23
20.375

31.4

69

(7)

167

(17)

235

(24)

392

(40)

980

(100)

206

(21)

500

(51)

706

(72)

1176

(120)

2942

(300)

480

(49)

1166

(119)

1646

(168)

2744

(280)

6865

(700)

150

150

150

150

65

270

270

250

250

135

6

6

6

6

10

50

50

50

50

50

11

21
31

11

21
31

11

21
31

11

21
31
21
31

arc.min

Lost

motion

(Representative

value)

6

6

6

6

10

4.25 x 10

-5

2.42 x 10

-5

1.88 x 10

-5

1.90 x 10

-4

1.00 x 10

-4

7.71 x 10

-5

1.48 x 10

-4

6.56 x 10

-5

4.72 x 10

-5

8.26 x 10

-4

4.10 x 10

-4

3.06 x 10

-4

1.49 x 10

-3

1.14 x 10

-3

8

15.5

15.5

35.5

90

GH7

GH17

GH24

GH40

GH100

133.3

156.9

152.1

198.1

262.0

155.3

200.1

211.1

277.1

-

460

(47)

804

(82)

843

(86)

1823

(186)

4900

(500)

Model

Code

Nm

(Kgfm)

mm

mm

Allowable Moment

(Mo)

N

(Kgf)

Maximum

Thrust Load

(W)

Shaft type

Flange type

Dimension

α

1

Capacity of Main Bearing

Load moment

1372

(140)

1960

(200)

2940

(300)

2940

(300)

5586

(570)

Mc = { W

1

x (α

1

+ L

1

) + W

2

x L

2

} x 10

-3

Mc    Mo

Mc : Load moment (Nm)
W

1

, W

2

: Load (N)

1

+ L

1

) , L

2

: Distance to the point of load application (mm)

L

1

: Distance from the mounting surface of the output shaft to

the point of load application (mm)

20

(2)

45

(4.6)

65

(6.6)

108
(11)
382

(39)

Nm/

arc.min

(Kgfm/

arc.min.)

Torsional-

rigidity

representative

value

Technical Information

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04

05

*1. The rating table shows the specification values of each reduction gear.

*2. The allowable output speed may be limited by heat depending on the operation rate.

If you use this product with the operation rate per cycle exceeding 50% or allowable output speed during continuous operation, contact us.

*3. For the inertia moment value, both the reduction gear and the input gear are taken into consideration. This, however, does not include the inertia moment

of the input spline.

Note:

1.  The mechanical brake of the motor generates the momentary excessive torque in the reduction gear. Make sure that the value does not exceed the

momentary maximum allowable torque.

2. The specifications above are based on Nabtesco evaluation methods; this product should only be used after confirming that it is appropriate for the

operating conditions of your system.

Specifications

Allowable Torque

Model

Code

Nm

(Kgfm)

Nm

(Kgfm)

Nm

(Kgfm)

rpm

rpm

arc.min

Ratio

Rated

Torque

(To)

Ratio

Code

rpm

Rated

Output

Speed

(No)

Backlash

Kgm

2

(Kg)

Inertia Moment I

(I=GD

2

/4)

Input Shaft

Equivalent

(*3)

Mass

Startup/

Stop Torque

Momentary

Maximum

Torque

Intermittent

Operation

Continuous

Operation

Allowable Output Speed

(*2)

Rating Table

(*1)

Shaft Type External Load Diagram

α

1

L

1

L

2

W

1

W

2

α

1

L

1

L

2

W

1

W

2

Flange Type External Load Diagram

GH7

GH17

GH24

GH40

GH100

461/41

21

153/5

11

21
31

11

21
31

419/39

21

723/23
20.375

31.4

69

(7)

167

(17)

235

(24)

392

(40)

980

(100)

206

(21)

500

(51)

706

(72)

1176

(120)

2942

(300)

480

(49)

1166

(119)

1646

(168)

2744

(280)

6865

(700)

150

150

150

150

65

270

270

250

250

135

6

6

6

6

10

50

50

50

50

50

11

21
31

11

21
31

11

21
31

11

21
31
21
31

arc.min

Lost

motion

(Representative

value)

6

6

6

6

10

4.25 x 10

-5

2.42 x 10

-5

1.88 x 10

-5

1.90 x 10

-4

1.00 x 10

-4

7.71 x 10

-5

1.48 x 10

-4

6.56 x 10

-5

4.72 x 10

-5

8.26 x 10

-4

4.10 x 10

-4

3.06 x 10

-4

1.49 x 10

-3

1.14 x 10

-3

8

15.5

15.5

35.5

90

GH7

GH17

GH24

GH40

GH100

133.3

156.9

152.1

198.1

262.0

155.3

200.1

211.1

277.1

-

460

(47)

804

(82)

843

(86)

1823

(186)

4900

(500)

Model

Code

Nm

(Kgfm)

mm

mm

Allowable Moment

(Mo)

N

(Kgf)

Maximum

Thrust Load

(W)

Shaft type

Flange type

Dimension

α

1

Capacity of Main Bearing

Load moment

1372

(140)

1960

(200)

2940

(300)

2940

(300)

5586

(570)

Mc = { W

1

x (α

1

+ L

1

) + W

2

x L

2

} x 10

-3

Mc    Mo

Mc : Load moment (Nm)
W

1

, W

2

: Load (N)

1

+ L

1

) , L

2

: Distance to the point of load application (mm)

L

1

: Distance from the mounting surface of the output shaft to

the point of load application (mm)

20

(2)

45

(4.6)

65

(6.6)

108
(11)
382

(39)

Nm/

arc.min

(Kgfm/

arc.min.)

Torsional-

rigidity

representative

value

Technical Information

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06

07

Note: Contact us in case the rotation angle is 10 degrees or less.

http://precision.nabtesco.com/

Considering the use of the GH SERIES

Operating environment

Product specifications indicated in this catalog

Export

Safety measures

Reduction gear output rotation angle

Application

Maintenance

Reduction gear temperature

Manuals

Note 1:

2:

Use the reduction gear under the following environment:

·  Location where the ambient temperature is between -10°C

to 40°C.

·  Location where the humidity is less than 85% and no

condensation occurs.

·  Location where the altitude is less than 1000 m.
·  Well-ventilated location

Do not install the reduction gear at the following locations.

· Location where a lot of dust is collected.
· Outdoors that can be directly affected by wind and rain
· Location near the environment that contains combustible, explosive,

or corrosive gases and flammable materials.

· Location that is heated due to heat transfer and radiation from

peripherals and direct sun.

· Location where the performance of the motor can be affected by

magnetic fields or vibration.

If the required operating environment cannot be established/met, contact us in advance.
When using the reduction gear under special conditions (clean room, equipment for food, concentrated alkali,
high-pressure steam, etc.), contact our agent or nearest business office in advance.

This product features high precision and high rigidity, however,it is necessary to strictly comply with various restrictions
and make appropriate to maximize the product’s features. Please read this technical document thoroughly and select and
adopt an appropriate model based on the actual operating environment, method, and conditions your facility.

•  When this product is exported from Japan, it may be subject to the export regulations provided in the “Foreign
Exchange Order and Export Trade Control Order”. Be sure to take sufficient precautions and perform the required
export procedures in advance if the final operating party is related to the military or the product is to be used in the
manufacture of weapons, etc.

•  If failure or malfunction of the product may directly endanger human life or if it is used in units which may injure the
human body (atomic facilities, space equipment, medical equipment, safety units, etc.), examination of individual
situations is required. Contact our agent or nearest business office in such a case.

•  Although this product has been manufactured under strict quality control, a mistake in operation or misuse can
result in breakdown or damage, or an accident resulting in injury or death. Be sure to take all appropriate safety
measures, such as the installation of independent safeguards.

•  The specifications indicated in this catalog are based on Nabtesco evaluation methods. This product should only
be used after confirming that it is appropriate for the operating conditions of your system.

•  The standard replacement time for Iubricant is 20,000 hours. However, when operation involves a reduction gear
surface temperature above 40°C, the state of degradation of the lubricant should be checked in advance of that
and the grease replaced earlier as necessary.

•  When the reduction gear is used under high load and at a high duty ratio, it may overheat and the surface
temperature may exceed the allowable temperature. Be aware of conditions so that the surface temperature of the
reduction gear does not exceed 60°C while it is in operation. There is a possibility of damage (to the product) if the
surface temperature exceeds 60°C.

•  When the range of the rotation angle is small (10 degrees or less), the service life of the reduction gear may be
reduced due to poor lubrication or the internal parts being subject to a concentrated load.

•  Safety information and detail product instructions are indicated in the operation manual.
The operation manual can be downloaded from the following website.

The allowable output speed when the reduction gear

operation rate per cycle exceeds 50% is referred to as

“allowable output speed [Continuous]”.

Note:  Maintain the environment and operation conditions so

that the temperature of the reduction gear case is 60˚C or

lower.

Allowable Output Speed [Continuous]

Glossary

Hysteresis Curve

When the machine starts or stops, the load torque to be

applied to the reduction gear is larger than the constant-

speed torque due to the effect of the inertia torque of the

rotation part. In such a situation, the allowable torque

during acceleration/deceleration is referred to as “allowable

acceleration/deceleration torque”.

Note:  Be careful that the load torque, which is applied during

normal operation, does not exceed the allowable

acceleration/deceleration torque.

Allowable Acceleration/Deceleration Torque

A large torque may be applied to the reduction gear due to

execution of emergency stop or by an external shock. In

such a situation, the allowable value of the momentary

applied torque is referred to as “momentary maximum

allowable torque”.

Note:  The mechanical brake of the motor or any other factor

may generate the momentary excessive torque in the

reduction gear. Be careful that the momentary excessive

torque does not exceed the momentary maximum

allowable torque.

Allowable Moment Diagram

The lifetime resulting from the operation with the rated

torque and the rated output speed is referred to as the “life

rating”. For the GH series, the life rating is 6,000 hours

continuous.

Life Rating

Momentary Maximum Allowable Torque

The allowable output speed during the operation in which

the maximum torque is below the rated torque of the

reduction gear and also when the operation rate of the

reduction gear per cycle is below 30%, it is referred to as

“allowable output speed [Intermittent]”.

Note:  Maintain the environment and operation conditions so

that the temperature of the reduction gear case is 60˚C or

lower.

Allowable Output Speed [Intermittent]

The external load moment may be applied to the reduction

gear, and the allowable value of the external moment is

referred to as “allowable moment”, while the allowable

value of the axial load is referred to as “maximum axial

load”.

Note:  When the load moment and the axial load are applied

concurrently, ensure that the reduction gear is used

within the corresponding allowable moment range, which

is indicated in the allowable moment diagram.

Allowable Moment and Maximum Axial Load

When torque is applied to the output shaft while the input

shaft is fixed, torsion is generated on the output shaft

according to the torque value and a hysteresis curve

results.

• The value of b/a is referred to as “torsional rigidity”.

• The torsion angle at the mid point of the hysteresis curve

width at ±3% of rated torque is referred to as “lost

motion”.

• The torsion angles when the torque indicated by the

hysteresis curve is zero are referred to as “backlash”.

Rigidity (Torsional Rigidity and Lost Motion) and Backlash

Backlash

Torsion

angle

Lost motion

b

Rated torque

Rated torque

±3%  Rated torque

Thrust load (N)

Thrust load (N)

Allowable moment (Nm)

Allowable moment (Nm)

GH40

GH24

GH17

GH7

441

695 764

1786

1116

1481

1542

2651

GH100

5191

4834

-100%

+100%

a

background image

06

07

Note: Contact us in case the rotation angle is 10 degrees or less.

http://precision.nabtesco.com/

Considering the use of the GH SERIES

Operating environment

Product specifications indicated in this catalog

Export

Safety measures

Reduction gear output rotation angle

Application

Maintenance

Reduction gear temperature

Manuals

Note 1:

2:

Use the reduction gear under the following environment:

·  Location where the ambient temperature is between -10°C

to 40°C.

·  Location where the humidity is less than 85% and no

condensation occurs.

·  Location where the altitude is less than 1000 m.
·  Well-ventilated location

Do not install the reduction gear at the following locations.

· Location where a lot of dust is collected.
· Outdoors that can be directly affected by wind and rain
· Location near the environment that contains combustible, explosive,

or corrosive gases and flammable materials.

· Location that is heated due to heat transfer and radiation from

peripherals and direct sun.

· Location where the performance of the motor can be affected by

magnetic fields or vibration.

If the required operating environment cannot be established/met, contact us in advance.
When using the reduction gear under special conditions (clean room, equipment for food, concentrated alkali,
high-pressure steam, etc.), contact our agent or nearest business office in advance.

This product features high precision and high rigidity, however,it is necessary to strictly comply with various restrictions
and make appropriate to maximize the product’s features. Please read this technical document thoroughly and select and
adopt an appropriate model based on the actual operating environment, method, and conditions your facility.

•  When this product is exported from Japan, it may be subject to the export regulations provided in the “Foreign
Exchange Order and Export Trade Control Order”. Be sure to take sufficient precautions and perform the required
export procedures in advance if the final operating party is related to the military or the product is to be used in the
manufacture of weapons, etc.

•  If failure or malfunction of the product may directly endanger human life or if it is used in units which may injure the
human body (atomic facilities, space equipment, medical equipment, safety units, etc.), examination of individual
situations is required. Contact our agent or nearest business office in such a case.

•  Although this product has been manufactured under strict quality control, a mistake in operation or misuse can
result in breakdown or damage, or an accident resulting in injury or death. Be sure to take all appropriate safety
measures, such as the installation of independent safeguards.

•  The specifications indicated in this catalog are based on Nabtesco evaluation methods. This product should only
be used after confirming that it is appropriate for the operating conditions of your system.

•  The standard replacement time for Iubricant is 20,000 hours. However, when operation involves a reduction gear
surface temperature above 40°C, the state of degradation of the lubricant should be checked in advance of that
and the grease replaced earlier as necessary.

•  When the reduction gear is used under high load and at a high duty ratio, it may overheat and the surface
temperature may exceed the allowable temperature. Be aware of conditions so that the surface temperature of the
reduction gear does not exceed 60°C while it is in operation. There is a possibility of damage (to the product) if the
surface temperature exceeds 60°C.

•  When the range of the rotation angle is small (10 degrees or less), the service life of the reduction gear may be
reduced due to poor lubrication or the internal parts being subject to a concentrated load.

•  Safety information and detail product instructions are indicated in the operation manual.
The operation manual can be downloaded from the following website.

The allowable output speed when the reduction gear

operation rate per cycle exceeds 50% is referred to as

“allowable output speed [Continuous]”.

Note:  Maintain the environment and operation conditions so

that the temperature of the reduction gear case is 60˚C or

lower.

Allowable Output Speed [Continuous]

Glossary

Hysteresis Curve

When the machine starts or stops, the load torque to be

applied to the reduction gear is larger than the constant-

speed torque due to the effect of the inertia torque of the

rotation part. In such a situation, the allowable torque

during acceleration/deceleration is referred to as “allowable

acceleration/deceleration torque”.

Note:  Be careful that the load torque, which is applied during

normal operation, does not exceed the allowable

acceleration/deceleration torque.

Allowable Acceleration/Deceleration Torque

A large torque may be applied to the reduction gear due to

execution of emergency stop or by an external shock. In

such a situation, the allowable value of the momentary

applied torque is referred to as “momentary maximum

allowable torque”.

Note:  The mechanical brake of the motor or any other factor

may generate the momentary excessive torque in the

reduction gear. Be careful that the momentary excessive

torque does not exceed the momentary maximum

allowable torque.

Allowable Moment Diagram

The lifetime resulting from the operation with the rated

torque and the rated output speed is referred to as the “life

rating”. For the GH series, the life rating is 6,000 hours

continuous.

Life Rating

Momentary Maximum Allowable Torque

The allowable output speed during the operation in which

the maximum torque is below the rated torque of the

reduction gear and also when the operation rate of the

reduction gear per cycle is below 30%, it is referred to as

“allowable output speed [Intermittent]”.

Note:  Maintain the environment and operation conditions so

that the temperature of the reduction gear case is 60˚C or

lower.

Allowable Output Speed [Intermittent]

The external load moment may be applied to the reduction

gear, and the allowable value of the external moment is

referred to as “allowable moment”, while the allowable

value of the axial load is referred to as “maximum axial

load”.

Note:  When the load moment and the axial load are applied

concurrently, ensure that the reduction gear is used

within the corresponding allowable moment range, which

is indicated in the allowable moment diagram.

Allowable Moment and Maximum Axial Load

When torque is applied to the output shaft while the input

shaft is fixed, torsion is generated on the output shaft

according to the torque value and a hysteresis curve

results.

• The value of b/a is referred to as “torsional rigidity”.

• The torsion angle at the mid point of the hysteresis curve

width at ±3% of rated torque is referred to as “lost

motion”.

• The torsion angles when the torque indicated by the

hysteresis curve is zero are referred to as “backlash”.

Rigidity (Torsional Rigidity and Lost Motion) and Backlash

Backlash

Torsion

angle

Lost motion

b

Rated torque

Rated torque

±3%  Rated torque

Thrust load (N)

Thrust load (N)

Allowable moment (Nm)

Allowable moment (Nm)

GH40

GH24

GH17

GH7

441

695 764

1786

1116

1481

1542

2651

GH100

5191

4834

-100%

+100%

a

background image

Selection Flow Chart

(1)

Study of

load characteristics

Provisionally select

the model number

from the Rating Table.

Calculation of life rating

(L

h

)

Calculation of

average load torque

(T

m

)

Calculation of

average output speed

(N

m

)

L

h

Required life rating

Study of

maximum output speed

Study of acceleration/

deceleration torque (T

1

/T

3

)

T

1

or T

3

Allowable

acceleration/

deceleration

torque

Calculation of

allowable number of

apply times (C

em

)

Study of

external shock torque (T

em

)

at emergency stop

T

em

Momentary

maximum

allowable torque

Study of external

shock torque (T

out

) when

the motor shaft speed is 0

Check the condition of the load torque applied to the reduction gear.

A sample diagram is shown below.

Load cycle diagram

Rotation load torque

Speed

Max torque for startup

External shock torque

Constant torque

Max torque for stop

Shock apply time

t

em

Acceleration

time

Deceleration

time

T

1

T

2

0

T

3

T

em

N

em

t

1

t

2

t

3

N

2

N

1

N

3

Time

T

m

=

t

1 ·

N

1 ·

T

1

+

t

2 ·

N

2 ·

T

2

+

···

t

n ·

N

n ·

T

n

t

1 ·

N

1

+

t

2 ·

N

2

+

···

t

n ·

N

n

10

3

10

3

10

3

10

3

N

m

= t

1 ·

N

1

+

t

2 ·

N

2

+

···

t

n ·

N

n

t

1

+

t

2

+

···

t

n

L

h

= 6000 x         x

No

N

m

To

T

m

(        )

10

3

C

em

=

60

N

em

20 x          x t

em

10

3

7 x To

T

em

775 x

(              )

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

NO

T

out

: Recommended value

Actual

number of

times

Study of load moment

(M

c

)

Determination of

model number

END

Study of axial load

(W2)

Check the condition of external

load applied to the reduction gear.

When the load moment and the

axial load are applied concurrently,

ensure that the reduction gear is

used within the corresponding

allowable moment range,

which is indicated in the Allowable

Moment Diagram.

N

m

=

= 71.4 rpm

0.1 x 50 + 0.15 x 100 + 0.1 x 50

0.1 + 0.15 + 0.1

Selection example

T

m

=

= 250 Nm

0.1 x 50 + 0.15 x 100 + 0.1 x 50

10

3

10

3

10

3

10

3

0.1 x 50 x 391    + 0.15 x 100 x 98    + 0.1 x 50 x 193

T

1

= 391 Nm    T

2

= 98 Nm    T

3

= 193 Nm    T

em

= 2600 Nm

t

1

= 0.1 sec    t

2

= 0.15 sec    t

3

= 0.1 sec    t

em

= 0.02 sec

N

1

= N

3

= 50 rpm    N

2

= 100 rpm    N

em

= 100 rpm

627 N

m

< 1823 N

m

Allowable output speed of GH40

(during continuous operation)

Allowable startup/stop torque of GH40

Momentary maximum allowable torque of GH40

L

h

= 6000 x           x

=

18818 Hr

18818 > 10000

50

71.4

(            )

392

250

10

3

Required life rating

Rated torque of GH40

M

c

=

(198.1 + 200)

1350 x                        + 900 x

1000

100

1000

(                  )

C

em

=

= 1391 times

100

60

20 x          x 0.02

10

3

7 x 392

2600

775 x

NO

NO

NO

External load condition

W

1

= 1350 N   L

1

= 200 mm

W

2

= 900 N     L

2

= 100 mm

Determine thrust load

900 N < 2940 N

Verify load moment (flange type)

GH40 is finally selected (all conditions are satisfied).

(2) Determine main bearing capacity

Determine torque at emergency stop or external shock

Tem = 2600 Nm < 2744 Nm

Determine torque for startup/stop

T

max

= T

1

= 391 N

m

< 1176 N

m

= 627 N

m

Allowable axial load of GH40

150 times < 1391 times

Actual number of apply times

Allowable moment of GH40

Determine maximum output speed

100

rpm

< 150

rpm

Allowable output speed of GH40

Select tentative frame number

According to the T

m

and N

m

values, select GH40 tentatively.

250 N

m

< 392 N

m

71.4 rpm < 150 rpm

Calculate life rating

Determine average output speed

Determine average load torque

Selection condition

(1) Determine load characteristics

Maximum

output

speed

Allowable

output

speed

W

2

Momentary

maximum

allowable

torque

NO

T

out

(Refer to page 04)

08

09

C

em

Allowable

axial load
(W)

M

c

Allowable

moment
(M

o

)

Select the reduction
gear with the higher

model number.

Reduce the load.

Select the higher model
number.
Decrease the load.

Mc = { W

1

x (α

1

+ L

1

) + W

2

x L

2

} x 10

-3

Mc    Mo

Select the lower model
number.
Decrease W

2

.

(2)

Study of

main bearing capacity

Acceleration

time

Constant

operation

time

Deceleration

time

background image

Selection Flow Chart

(1)

Study of

load characteristics

Provisionally select

the model number

from the Rating Table.

Calculation of life rating

(L

h

)

Calculation of

average load torque

(T

m

)

Calculation of

average output speed

(N

m

)

L

h

Required life rating

Study of

maximum output speed

Study of acceleration/

deceleration torque (T

1

/T

3

)

T

1

or T

3

Allowable

acceleration/

deceleration

torque

Calculation of

allowable number of

apply times (C

em

)

Study of

external shock torque (T

em

)

at emergency stop

T

em

Momentary

maximum

allowable torque

Study of external

shock torque (T

out

) when

the motor shaft speed is 0

Check the condition of the load torque applied to the reduction gear.

A sample diagram is shown below.

Load cycle diagram

Rotation load torque

Speed

Max torque for startup

External shock torque

Constant torque

Max torque for stop

Shock apply time

t

em

Acceleration

time

Deceleration

time

T

1

T

2

0

T

3

T

em

N

em

t

1

t

2

t

3

N

2

N

1

N

3

Time

T

m

=

t

1 ·

N

1 ·

T

1

+

t

2 ·

N

2 ·

T

2

+

···

t

n ·

N

n ·

T

n

t

1 ·

N

1

+

t

2 ·

N

2

+

···

t

n ·

N

n

10

3

10

3

10

3

10

3

N

m

= t

1 ·

N

1

+

t

2 ·

N

2

+

···

t

n ·

N

n

t

1

+

t

2

+

···

t

n

L

h

= 6000 x         x

No

N

m

To

T

m

(        )

10

3

C

em

=

60

N

em

20 x          x t

em

10

3

7 x To

T

em

775 x

(              )

NO

NO

NO

YES

YES

YES

YES

YES

YES

YES

YES

NO

T

out

: Recommended value

Actual

number of

times

Study of load moment

(M

c

)

Determination of

model number

END

Study of axial load

(W2)

Check the condition of external

load applied to the reduction gear.

When the load moment and the

axial load are applied concurrently,

ensure that the reduction gear is

used within the corresponding

allowable moment range,

which is indicated in the Allowable

Moment Diagram.

N

m

=

= 71.4 rpm

0.1 x 50 + 0.15 x 100 + 0.1 x 50

0.1 + 0.15 + 0.1

Selection example

T

m

=

= 250 Nm

0.1 x 50 + 0.15 x 100 + 0.1 x 50

10

3

10

3

10

3

10

3

0.1 x 50 x 391    + 0.15 x 100 x 98    + 0.1 x 50 x 193

T

1

= 391 Nm    T

2

= 98 Nm    T

3

= 193 Nm    T

em

= 2600 Nm

t

1

= 0.1 sec    t

2

= 0.15 sec    t

3

= 0.1 sec    t

em

= 0.02 sec

N

1

= N

3

= 50 rpm    N

2

= 100 rpm    N

em

= 100 rpm

627 N

m

< 1823 N

m

Allowable output speed of GH40

(during continuous operation)

Allowable startup/stop torque of GH40

Momentary maximum allowable torque of GH40

L

h

= 6000 x           x

=

18818 Hr

18818 > 10000

50

71.4

(            )

392

250

10

3

Required life rating

Rated torque of GH40

M

c

=

(198.1 + 200)

1350 x                        + 900 x

1000

100

1000

(                  )

C

em

=

= 1391 times

100

60

20 x          x 0.02

10

3

7 x 392

2600

775 x

NO

NO

NO

External load condition

W

1

= 1350 N   L

1

= 200 mm

W

2

= 900 N     L

2

= 100 mm

Determine thrust load

900 N < 2940 N

Verify load moment (flange type)

GH40 is finally selected (all conditions are satisfied).

(2) Determine main bearing capacity

Determine torque at emergency stop or external shock

Tem = 2600 Nm < 2744 Nm

Determine torque for startup/stop

T

max

= T

1

= 391 N

m

< 1176 N

m

= 627 N

m

Allowable axial load of GH40

150 times < 1391 times

Actual number of apply times

Allowable moment of GH40

Determine maximum output speed

100

rpm

< 150

rpm

Allowable output speed of GH40

Select tentative frame number

According to the T

m

and N

m

values, select GH40 tentatively.

250 N

m

< 392 N

m

71.4 rpm < 150 rpm

Calculate life rating

Determine average output speed

Determine average load torque

Selection condition

(1) Determine load characteristics

Maximum

output

speed

Allowable

output

speed

W

2

Momentary

maximum

allowable

torque

NO

T

out

(Refer to page 04)

08

09

C

em

Allowable

axial load
(W)

M

c

Allowable

moment
(M

o

)

Select the reduction
gear with the higher

model number.

Reduce the load.

Select the higher model
number.
Decrease the load.

Mc = { W

1

x (α

1

+ L

1

) + W

2

x L

2

} x 10

-3

Mc    Mo

Select the lower model
number.
Decrease W

2

.

(2)

Study of

main bearing capacity

Acceleration

time

Constant

operation

time

Deceleration

time

background image

Performance

No-load running torque

Output shaft configuration

Input shaft equivalent

no-load running torque

(Nm)

=

Input shaft equivalent

no-load running torque (Nm)

Speed ratio

Case temperature:  20˚C
Lubricant:

Grease (Molywhite RE00)

The no-load running torque that is converted to the input shaft side value should be figured out according to
the following equation:

50

100

150

200

0

50

100

140

150

40

90

130

30

80

120

20

70

110

10

60

250

Input shaft equivalent no-load running torque (Nm)

Output shaft speed (rpm)

GH100

GH40

GH24

GH17

GH7

Model Code

When ordering or making an inquiry, use the following model code.

Selection of model code

1. Only 21 and 31 can be used as the ratio code of the GH100.
2. Only the flange type output shaft is available for the GH100.
3. Select the model code according to the attached Quick Selection Table of Model Code.
4. When you use a servomotor not listed in the Quick Selection Table of Model Code,
select the parts compatible with the servomotor from among the input spline sets
and motor flanges (standard/semi-processed product) that we provide
(refer to pages 17 to 25).
5. For the customized specifications, contact us.

(1)

Model code

7

17

24

40

100

(2)

Ratio code

11

21

31

(3)

Input spline code

A to ZZ

Y1

Y2

Z

A to ZZ

Y1

Z

(4)

Motor flange code

7

Output shaft type

code

Flange

Shaft

P

S

P

21

A

B

Standard

Blank

None

Standard

Blank

None

GH

Motor flange

Input spline set

Reduction gear body

Output flange type

Output shaft type

10

11

background image

Performance

No-load running torque

Output shaft configuration

Input shaft equivalent

no-load running torque

(Nm)

=

Input shaft equivalent

no-load running torque (Nm)

Speed ratio

Case temperature:  20˚C
Lubricant:

Grease (Molywhite RE00)

The no-load running torque that is converted to the input shaft side value should be figured out according to
the following equation:

50

100

150

200

0

50

100

140

150

40

90

130

30

80

120

20

70

110

10

60

250

Input shaft equivalent no-load running torque (Nm)

Output shaft speed (rpm)

GH100

GH40

GH24

GH17

GH7

Model Code

When ordering or making an inquiry, use the following model code.

Selection of model code

1. Only 21 and 31 can be used as the ratio code of the GH100.
2. Only the flange type output shaft is available for the GH100.
3. Select the model code according to the attached Quick Selection Table of Model Code.
4. When you use a servomotor not listed in the Quick Selection Table of Model Code,
select the parts compatible with the servomotor from among the input spline sets
and motor flanges (standard/semi-processed product) that we provide
(refer to pages 17 to 25).
5. For the customized specifications, contact us.

(1)

Model code

7

17

24

40

100

(2)

Ratio code

11

21

31

(3)

Input spline code

A to ZZ

Y1

Y2

Z

A to ZZ

Y1

Z

(4)

Motor flange code

7

Output shaft type

code

Flange

Shaft

P

S

P

21

A

B

Standard

Blank

None

Standard

Blank

None

GH

Motor flange

Input spline set

Reduction gear body

Output flange type

Output shaft type

10

11

background image

External Dimension Drawing

Reduction Gear

12

13

GH7

GH17

background image

External Dimension Drawing

Reduction Gear

12

13

GH7

GH17

background image

14

15

External Dimension Drawing

Reduction Gear

GH24

GH40

background image

14

15

External Dimension Drawing

Reduction Gear

GH24

GH40

background image

100
122
106
158
202

+4.6

- 0.7

+6.3

-1.0

+3.7

-0.4

+3.0

-1.1

+2.5

-1.0

Check the thickness of the motor flange according to the following equation:

Thickness of motor flange  D = (A + LR - L) - LL

GH7

GH17
GH24
GH40

GH100

Model

Code

LL

Input Spline Insertion

Amount (mm)

Motor flange

Input spline

L (Input spline hole depth)
LR (Motor shaft length)

Model Code Selection

(Precautions)

16

17

External Dimension Drawing

Reduction Gear

1.  Select the model code that is compatible with the servomotor being used according to the Quick Selection Table of Model

Code.

2.  If a compatible servomotor is not listed in the Quick Selection Table of Model Code, select a part that is compatible with the

servomotor according to the external dimension drawings for the input spline set and motor flange attached on the following

pages.

GH100

D

LL (Insertion amount)

Motor mounting edge

Reduction gear

Motor mounting edge

LL (Insertion amount)

A (Total length of input spline)

L

LR

Note:

Calculate the LR of the 1/10 taper

shaft with the dimension excluding

the threaded portion at the shaft tip.

GH100

Combination of reduction gear and servomotor

1. The combinations that satisfy the following equation are recommended.
(Rated torque of motor x 0.5) < {Rated torque of reduction gear/(Speed ratio x 0.8)} < (Rated torque of motor x 1.5)
2. Select the combinations that satisfy the following equation.
(Maximum torque of motor) < {Momentary maximum torque of reduction gear/(Speed ratio x 0.8)}
3. Limitation must be imposed to the motor torque when the condition indicated in 2 above cannot be satisfied.
4. For more precise motor selection, the effective torque, load inertia moment, brake torque, regenerative ability, and so forth,
must also be considered.

background image

100
122
106
158
202

+4.6

- 0.7

+6.3

-1.0

+3.7

-0.4

+3.0

-1.1

+2.5

-1.0

Check the thickness of the motor flange according to the following equation:

Thickness of motor flange  D = (A + LR - L) - LL

GH7

GH17
GH24
GH40

GH100

Model

Code

LL

Input Spline Insertion

Amount (mm)

Motor flange

Input spline

L (Input spline hole depth)
LR (Motor shaft length)

Model Code Selection

(Precautions)

16

17

External Dimension Drawing

Reduction Gear

1.  Select the model code that is compatible with the servomotor being used according to the Quick Selection Table of Model

Code.

2.  If a compatible servomotor is not listed in the Quick Selection Table of Model Code, select a part that is compatible with the

servomotor according to the external dimension drawings for the input spline set and motor flange attached on the following

pages.

GH100

D

LL (Insertion amount)

Motor mounting edge

Reduction gear

Motor mounting edge

LL (Insertion amount)

A (Total length of input spline)

L

LR

Note:

Calculate the LR of the 1/10 taper

shaft with the dimension excluding

the threaded portion at the shaft tip.

GH100

Combination of reduction gear and servomotor

1. The combinations that satisfy the following equation are recommended.
(Rated torque of motor x 0.5) < {Rated torque of reduction gear/(Speed ratio x 0.8)} < (Rated torque of motor x 1.5)
2. Select the combinations that satisfy the following equation.
(Maximum torque of motor) < {Momentary maximum torque of reduction gear/(Speed ratio x 0.8)}
3. Limitation must be imposed to the motor torque when the condition indicated in 2 above cannot be satisfied.
4. For more precise motor selection, the effective torque, load inertia moment, brake torque, regenerative ability, and so forth,
must also be considered.

background image

18

19

For straight shaft without key

For 1/10 taper

External Dimension Drawing

Input Spline Set

ØC

ØB

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

Model

GH24

GH40

GH100

Code

AH

AL

AM

AN

AP

S
A
B
C
D
K

M

N
U

W

AD

AF

AL

AM

AN

A

C
D
E

F

30S421AH

*

30S421AL

*

30S421AM

*

30S421AN

*

30S421AP

*

40S421-

*

40S421A

*

40S421B

*

40S421C

*

40S421D

*

40S421K

*

40S421M

*

40S421N

*

40S421U

*

40S421W

*

40S421AD

*

40S421AF

*

40S421AL

*

40S421AM

*

40S421AN

*

60S421A

*

60S421C

*

60S421D

*

60S421E

*

60S421F

*

A

138
174
174
129
137
163
176
176
163
177
175
176
177

211

171
175
175
175
176
177
216
216
216
216
216

ØB

63
68
68
63
63
68
68
68
68
68
68
68
68
70
68
68
68
70
68
68
77
75
77
77
75

22
35
35
19
28
22
24
28
35
35
32
24
35
42
28
32
32
32
28
35
42
35
42
42
35

+0.021

0

+0.035

+0.010

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.016

0

+0.025

0

+0.025

0

+0.021

0

+0.035

+0.010

+0.025

0

+0.035

+0.010

+0.025

0

+0.025

0

+0.035

+0.010

L
31
64
59
37
45
38
48
58
38
73
32
58
63
79
51
34
42
57
48
58

102

68
74
68
53

ØC

Input Spline Dimension (mm)

Parts No.

Model

GH7

GH17

GH24

Code

S
A
B
D

M

N
Q
R

T

U

AF
AY
AZ
BA
BB

S
B
C
E
P

Q

T

W

AB
AC
AF

AL

AQ
AR

AS

S
A
D
E

G
H
Q

T

U

W

AA
AB

10S421-

*

10S421A

*

10S421B

*

10S421D

*

10S421M

*

10S421N

*

10S421Q

*

10S421R

*

10S421T

*

10S421U

*

10S421AF

*

10S421AY

*

10S421AZ

*

10S421BA

*

10S421BB

*

20S421-

*

20S421B

*

20S421C

*

20S421E

*

20S421P

*

20S421Q

*

20S421T

*

20S421W

*

20S421AB

*

20S421AC

*

20S421AF

*

20S421AL

*

20S421AQ

*

20S421AR

*

20S421AS

*

30S421-

*

30S421A

*

30S421D

*

30S421E

*

30S421G

*

30S421H

*

30S421Q

*

30S421T

*

30S421U

*

30S421W

*

30S421AA

*

30S431AB

*

A

124
124
124
123
126
120
144

114

124
124

117

122

117

123
123
137
137
124
124
128
134
124
176
134
132
176
124
132
130
131
142
129
174
129
129
142
174
137
139
129
159
126

ØB

53
53
53
53
53
53
63
53
53
48
53
53
53
53
53
63
63
63
63
63
63
63
68
63
63
68
63
63
63
63
63
63
63
63
63
63
68
63
63
63
68
63

11

14
16
22
19
22
24
19
16
14
19
22
10
22
22
14
24
25
22
19
19
19
35
24
28
35
19
22
24
16
24
22
28
28
28
28
35
28
24
19
32
24

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7
H7
H7
H7

L

24
29
29
48
31
60
49
39
34
24
33
47
19
31
38
30
50
40
40
32
32
40
73
37
53
59
37
30
43
29
50
40
74
60
50
74
74
53
57
50
33
47

ØC

Input Spline Dimension (mm)

Parts No.

A

L

+0.018

0

+0.018

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.018

0

+0.021

0

+0.021

0

+0.015

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.021

0

H7

H7
H7
H7
H7
H7
H7

H7
H7

H7
H7
H6
H7
H7
H7

H7

H7
H7

Model

GH7

GH17

GH24

GH40

Ø

C

Input Spline Dimension (mm)

Parts No.

Code

G
H

X

AB
AR
AS

F

R

F
K

L

E
H
X

10S422G

*

10S422H

*

10S422X

*

10S422AB

*

10S422AR

*

10S422AS

*

20S422F

*

20S422R

*

30S422F

*

30S422K

*

30S422L

*

40S422E

*

40S422H

*

40S422X

*

A
86

112

106

116

130
106
104
124
129
145
105
165
149
248

ØB

28
28
28
28
32
28
38
38
36
42
36
45
45
72

11

16
14

11

22
14
16
16
16
30.8
16
16
30.8
55

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

L

15
28
18
15
36
18
28
28
28
46
28
28
46
82

E

4
5
5
4
6
4
5
5
5
7
5
5
7

10

F

7
9.5
8.65
7

12.9

8.25
9.5
9.5
9.5

17.75

9.5
9.5

17.75
29.85

Nom. Dia.

M6
M10
M8
M6
M12
M8
M10
M10
M10
M20
M10
M10
M20
M36

Pitch

P1.0
P1.25
P1.0
P1.0
P1.25
P1.0
P1.25
P1.25
P1.25
P1.5
P1.25
P1.25
P1.5
P3.0

Depth

9

13
13

9

15
13
13
13
13
23
13
13
23
30

A

F

L

E

Nominal diameter x Pitch Depth

Thread

ØC

ØB

background image

18

19

For straight shaft without key

For 1/10 taper

External Dimension Drawing

Input Spline Set

ØC

ØB

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

Model

GH24

GH40

GH100

Code

AH

AL

AM

AN

AP

S
A
B
C
D
K

M

N
U

W

AD

AF

AL

AM

AN

A

C
D
E

F

30S421AH

*

30S421AL

*

30S421AM

*

30S421AN

*

30S421AP

*

40S421-

*

40S421A

*

40S421B

*

40S421C

*

40S421D

*

40S421K

*

40S421M

*

40S421N

*

40S421U

*

40S421W

*

40S421AD

*

40S421AF

*

40S421AL

*

40S421AM

*

40S421AN

*

60S421A

*

60S421C

*

60S421D

*

60S421E

*

60S421F

*

A

138
174
174
129
137
163
176
176
163
177
175
176
177

211

171
175
175
175
176
177
216
216
216
216
216

ØB

63
68
68
63
63
68
68
68
68
68
68
68
68
70
68
68
68
70
68
68
77
75
77
77
75

22
35
35
19
28
22
24
28
35
35
32
24
35
42
28
32
32
32
28
35
42
35
42
42
35

+0.021

0

+0.035

+0.010

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.016

0

+0.025

0

+0.025

0

+0.021

0

+0.035

+0.010

+0.025

0

+0.035

+0.010

+0.025

0

+0.025

0

+0.035

+0.010

L
31
64
59
37
45
38
48
58
38
73
32
58
63
79
51
34
42
57
48
58

102

68
74
68
53

ØC

Input Spline Dimension (mm)

Parts No.

Model

GH7

GH17

GH24

Code

S
A
B
D

M

N
Q
R

T

U

AF
AY
AZ
BA
BB

S
B
C
E
P

Q

T

W

AB
AC
AF

AL

AQ
AR

AS

S
A
D
E

G
H
Q

T

U

W

AA
AB

10S421-

*

10S421A

*

10S421B

*

10S421D

*

10S421M

*

10S421N

*

10S421Q

*

10S421R

*

10S421T

*

10S421U

*

10S421AF

*

10S421AY

*

10S421AZ

*

10S421BA

*

10S421BB

*

20S421-

*

20S421B

*

20S421C

*

20S421E

*

20S421P

*

20S421Q

*

20S421T

*

20S421W

*

20S421AB

*

20S421AC

*

20S421AF

*

20S421AL

*

20S421AQ

*

20S421AR

*

20S421AS

*

30S421-

*

30S421A

*

30S421D

*

30S421E

*

30S421G

*

30S421H

*

30S421Q

*

30S421T

*

30S421U

*

30S421W

*

30S421AA

*

30S431AB

*

A

124
124
124
123
126
120
144

114

124
124

117

122

117

123
123
137
137
124
124
128
134
124
176
134
132
176
124
132
130
131
142
129
174
129
129
142
174
137
139
129
159
126

ØB

53
53
53
53
53
53
63
53
53
48
53
53
53
53
53
63
63
63
63
63
63
63
68
63
63
68
63
63
63
63
63
63
63
63
63
63
68
63
63
63
68
63

11

14
16
22
19
22
24
19
16
14
19
22
10
22
22
14
24
25
22
19
19
19
35
24
28
35
19
22
24
16
24
22
28
28
28
28
35
28
24
19
32
24

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7
H7
H7
H7

L

24
29
29
48
31
60
49
39
34
24
33
47
19
31
38
30
50
40
40
32
32
40
73
37
53
59
37
30
43
29
50
40
74
60
50
74
74
53
57
50
33
47

ØC

Input Spline Dimension (mm)

Parts No.

A

L

+0.018

0

+0.018

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.018

0

+0.021

0

+0.021

0

+0.015

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.021

0

H7

H7
H7
H7
H7
H7
H7

H7
H7

H7
H7
H6
H7
H7
H7

H7

H7
H7

Model

GH7

GH17

GH24

GH40

Ø

C

Input Spline Dimension (mm)

Parts No.

Code

G
H

X

AB
AR
AS

F

R

F
K

L

E
H
X

10S422G

*

10S422H

*

10S422X

*

10S422AB

*

10S422AR

*

10S422AS

*

20S422F

*

20S422R

*

30S422F

*

30S422K

*

30S422L

*

40S422E

*

40S422H

*

40S422X

*

A
86

112

106

116

130
106
104
124
129
145
105
165
149
248

ØB

28
28
28
28
32
28
38
38
36
42
36
45
45
72

11

16
14

11

22
14
16
16
16
30.8
16
16
30.8
55

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

+0.1

0

L

15
28
18
15
36
18
28
28
28
46
28
28
46
82

E

4
5
5
4
6
4
5
5
5
7
5
5
7

10

F

7
9.5
8.65
7

12.9

8.25
9.5
9.5
9.5

17.75

9.5
9.5

17.75
29.85

Nom. Dia.

M6
M10
M8
M6
M12
M8
M10
M10
M10
M20
M10
M10
M20
M36

Pitch

P1.0
P1.25
P1.0
P1.0
P1.25
P1.0
P1.25
P1.25
P1.25
P1.5
P1.25
P1.25
P1.5
P3.0

Depth

9

13
13

9

15
13
13
13
13
23
13
13
23
30

A

F

L

E

Nominal diameter x Pitch Depth

Thread

ØC

ØB

background image

20

21

For straight shaft with key

For straight shaft with key (with draw bolt)

External Dimension Drawing

Input Spline Set

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

For the GH100 input spline set, contact us.

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

Model

GH7

GH17

GH24
GH40

ØC

Input Spline Dimension (mm)

Stud Bolt

L

34
29
29
39
29
39
38
39

Parts No.

Code

E
F

AG

D

J

AJ

P

J

10S423E

*

10S423F

*

10S423AG

*

20S423D

*

20S423J

*

20S423AJ

*

30S423P

*

40S423J

*

A

124

94
94

136
136
123
147.5
165.5

ØB

28
28
28
38
38
38
36
50

16
16
16
19
16
22
22
35

H7
H7
H7
H7
H7
H7
H7
H7

+0.018

0

+0.018

0

+0.018

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.025

0

E

5
5
5
6
5
6
6

10

F

18.3
18.3
18.3
21.8
18.3
24.8
24.8
38.3

Nom. Dia.

M5
M5
M5
M6
M5
M5
M6
M6

G

12
10
10
12
12

11

12
13

A

ØC ØB

F

L

E

A

ØC ØB

F

L

G

E

Draw Bolt   Nominal Size

Model

GH7

GH17

GH24

ØC

Input Spline Dimension (mm)

Code

C

J

W

Y

AC
AD
AH
AK

AM

AN

AP

AQ

AT

AU

AW

AX

G

K
N
X
Y

AD

AA
AE
AK
AP

AT

AU
AX

AY

B

J

M

X
Y

AD
AE

AF

AG

10S423C

*

10S423J

*

10S423W

*

10S423Y

*

10S423AC

*

10S423AD

*

10S423AH

*

10S423AK

*

10S423AM

*

10S423AN

*

10S423AP

*

10S423AQ

*

10S423AT

*

10S423AU

*

10S423AW

*

10S423AX

*

20S423G

*

20S423K

*

20S423N

*

20S423X

*

20S423Y

*

20S421AD

*

20S423AA

*

20S423AE

*

20S423AK

*

20S423AP

*

20S423AT

*

20S423AU

*

20S423AX

*

20S423AY

*

30S423B

*

30S423J

*

30S423M

*

30S423X

*

30S423Y

*

30S423AD

*

30S423AE

*

30S423AF

*

30S423AG

*

A

124
125
125

112

120
133

112

134
134
133
125

119

124

113

124

117

137
137
172
170
163
130
130
123
123
137
136
135
136
123
159
159

111

122
154
160
159
156
129

ØB

28
28
32
28
28
36
32
32
38
36
32
28
32
32
28
28
38
38
50
45
50
38
38
38
38
38
40
38
38
38
50
42
36
42
42
50
50
44
42

14
16
19
14
14
22
17
19
24
22
19
14
17
16

11

10
22
19
35
28
35
22
24
17
19
19
22
19
16
19
35
28
22
24
28
28
32
28
22

H7
H7
G7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7

H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7
H7
H7
H7
H7
H7
H7

+0.018

0

+0.018

0

+0.028

+0.007

+0.018

0

+0.018

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.018

0

+0.018

0

+0.018

0

+0.015

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.021

0

+0.021

0

L

29
35
35
28
45
41
29
39
39
28
30
19
49
28
24
19
50
40
69
43
46
33
37
28
36
40
49
33
29
39
58
48
38
37
37
38
58
53
50

E

5
5
6
5
5
6
5
6
8
6
6
5
5
5
4
3
6
5

10

8

10

8
8
5
6
6
6
6
5
5

10

8
8
8
8
8

10

8
8

F

16.3
18.3
21.8
16.3
16.3
24.8
19.3
21.8
27.3
24.8
21.8
16.3
19.3
18.3
12.8

11.4

24.8
21.3
38.3
31.3
38.3
25.3
27.3
19.3
21.8
21.8
24.8
21.8
18.3
21.3
38.3
31.3
25.3
27.3
31.3
31.3
35.3
31.3
25.3

Parts No.

Model

GH40

ØC

Input Spline Dimension (mm)

Code

F

G

L

P

R

T
Y

AA
AB

AC
AE
AG

AJ

AK

40S423F

*

40S423G

*

40S423L

*

40S423P

*

40S423R

*

40S423T

*

40S423Y

*

40S423AA

*

40S423AB

*

40S423AC

*

40S423AE

*

40S423AG

*

40S423AJ

*

40S423AK

*

A

176
194
225
169
169
225
187
173
172
176
173
172
194
200

ØB

45
52
60
45
45
75
50
45
50
50
50
50
50
60

28
35
42
28
28
55
35
22
28
28
24
28
32
42

H7

H7
H7
H7
H7
H7
H7
H7
G7
H7
H7
H7
H7

+0.021

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.021

0

+0.030

0

+0.025

0

+0.021

0

+0.021

0

+0.028

+0.007

+0.021

0

+0.021

0

+0.025

0

+0.025

0

L

48
58
93
49
49
56
59
35
38
58
55
38
58
68

E

8

10
12

8

10
16
10

8

10

8
8
8

10
12

F

31.3
38.3
45.3
31.3
31.3
59.3
38.3
25.3
31.3
31.3
27.3
31.3
35.3
45.3

Parts No.

background image

20

21

For straight shaft with key

For straight shaft with key (with draw bolt)

External Dimension Drawing

Input Spline Set

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

For the GH100 input spline set, contact us.

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

Model

GH7

GH17

GH24
GH40

ØC

Input Spline Dimension (mm)

Stud Bolt

L

34
29
29
39
29
39
38
39

Parts No.

Code

E
F

AG

D

J

AJ

P

J

10S423E

*

10S423F

*

10S423AG

*

20S423D

*

20S423J

*

20S423AJ

*

30S423P

*

40S423J

*

A

124

94
94

136
136
123
147.5
165.5

ØB

28
28
28
38
38
38
36
50

16
16
16
19
16
22
22
35

H7
H7
H7
H7
H7
H7
H7
H7

+0.018

0

+0.018

0

+0.018

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.025

0

E

5
5
5
6
5
6
6

10

F

18.3
18.3
18.3
21.8
18.3
24.8
24.8
38.3

Nom. Dia.

M5
M5
M5
M6
M5
M5
M6
M6

G

12
10
10
12
12

11

12
13

A

ØC ØB

F

L

E

A

ØC ØB

F

L

G

E

Draw Bolt   Nominal Size

Model

GH7

GH17

GH24

ØC

Input Spline Dimension (mm)

Code

C

J

W

Y

AC
AD
AH
AK

AM

AN

AP

AQ

AT

AU

AW

AX

G

K
N
X
Y

AD

AA
AE
AK
AP

AT

AU
AX

AY

B

J

M

X
Y

AD
AE

AF

AG

10S423C

*

10S423J

*

10S423W

*

10S423Y

*

10S423AC

*

10S423AD

*

10S423AH

*

10S423AK

*

10S423AM

*

10S423AN

*

10S423AP

*

10S423AQ

*

10S423AT

*

10S423AU

*

10S423AW

*

10S423AX

*

20S423G

*

20S423K

*

20S423N

*

20S423X

*

20S423Y

*

20S421AD

*

20S423AA

*

20S423AE

*

20S423AK

*

20S423AP

*

20S423AT

*

20S423AU

*

20S423AX

*

20S423AY

*

30S423B

*

30S423J

*

30S423M

*

30S423X

*

30S423Y

*

30S423AD

*

30S423AE

*

30S423AF

*

30S423AG

*

A

124
125
125

112

120
133

112

134
134
133
125

119

124

113

124

117

137
137
172
170
163
130
130
123
123
137
136
135
136
123
159
159

111

122
154
160
159
156
129

ØB

28
28
32
28
28
36
32
32
38
36
32
28
32
32
28
28
38
38
50
45
50
38
38
38
38
38
40
38
38
38
50
42
36
42
42
50
50
44
42

14
16
19
14
14
22
17
19
24
22
19
14
17
16

11

10
22
19
35
28
35
22
24
17
19
19
22
19
16
19
35
28
22
24
28
28
32
28
22

H7
H7
G7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

H7

H7
H7
H7
H7
H7
H7
H7
H7
H7

H7
H7
H7
H7
H7
H7
H7
H7

+0.018

0

+0.018

0

+0.028

+0.007

+0.018

0

+0.018

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.018

0

+0.018

0

+0.018

0

+0.015

0

+0.021

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.018

0

+0.021

0

+0.035

+0.010

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.021

0

+0.025

0

+0.021

0

+0.021

0

L

29
35
35
28
45
41
29
39
39
28
30
19
49
28
24
19
50
40
69
43
46
33
37
28
36
40
49
33
29
39
58
48
38
37
37
38
58
53
50

E

5
5
6
5
5
6
5
6
8
6
6
5
5
5
4
3
6
5

10

8

10

8
8
5
6
6
6
6
5
5

10

8
8
8
8
8

10

8
8

F

16.3
18.3
21.8
16.3
16.3
24.8
19.3
21.8
27.3
24.8
21.8
16.3
19.3
18.3
12.8

11.4

24.8
21.3
38.3
31.3
38.3
25.3
27.3
19.3
21.8
21.8
24.8
21.8
18.3
21.3
38.3
31.3
25.3
27.3
31.3
31.3
35.3
31.3
25.3

Parts No.

Model

GH40

ØC

Input Spline Dimension (mm)

Code

F

G

L

P

R

T
Y

AA
AB

AC
AE
AG

AJ

AK

40S423F

*

40S423G

*

40S423L

*

40S423P

*

40S423R

*

40S423T

*

40S423Y

*

40S423AA

*

40S423AB

*

40S423AC

*

40S423AE

*

40S423AG

*

40S423AJ

*

40S423AK

*

A

176
194
225
169
169
225
187
173
172
176
173
172
194
200

ØB

45
52
60
45
45
75
50
45
50
50
50
50
50
60

28
35
42
28
28
55
35
22
28
28
24
28
32
42

H7

H7
H7
H7
H7
H7
H7
H7
G7
H7
H7
H7
H7

+0.021

0

+0.035

+0.010

+0.025

0

+0.021

0

+0.021

0

+0.030

0

+0.025

0

+0.021

0

+0.021

0

+0.028

+0.007

+0.021

0

+0.021

0

+0.025

0

+0.025

0

L

48
58
93
49
49
56
59
35
38
58
55
38
58
68

E

8

10
12

8

10
16
10

8

10

8
8
8

10
12

F

31.3
38.3
45.3
31.3
31.3
59.3
38.3
25.3
31.3
31.3
27.3
31.3
35.3
45.3

Parts No.

background image

Square

type
(30S)

22

23

Circle type

Square type

External Dimension Drawing

Motor Flange

B

174

180
200
220
220
220

Model

GH7

GH17

GH24

GH40 /

GH100

C

Motor Flange Dimension (mm)

Parts No.

Code

S
D

G
H

J

N
Q
X

AE

S
A
B
F
K

L

U

W

N
S
E
G
H

M

T

W

10S203-

*

10S203D

*

10S203G

*

10S203H

*

10S203J

*

10S203N

*

10S203Q

*

10S203X

*

10S203AE

*

20S203-

*

20S203A

*

20S203B

*

20S203F

*

20S203K

*

20S203L

*

20S203U

*

20S203W

*

30S203N

*

40S203-

*

40S203E

*

40S203G

*

40S203H

*

40S203M

*

40S203T

*

40S203W

*

ØA

135
135
135
135
135
135
135
135
135
170
190
170
170
190
170
170
170
170
230
230
230
230
230
230
230

35
35
35
35
35
55
35
55
25
25
25
25
25
25
65
40
25
65
30
30
30
48
62
92
58

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

30
30
30
30
30
50
30
50
20
20
20
20
20
20
60
35
20
60
25
25
25
43
57
87
53

ØE

72
72
60
60
60
72
60
72
70

100
100

72
80

100
100
100

70

100
100
100
100
100
100
100
100

80
80
80
80
80
80
80
80
80

110
110
110
110
110
110
110
110
110
114.3
114.3
114.3
114.3
114.3
114.3
114.3

ØF

h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7

+0.035

0

+0.030

0

+0.025

0

+0.030

0

+0.025

0

+0.030

0

+0.030

0

+0.035

0

+0.030

0

+0.035

0

+0.040

0

+0.030

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

95
80
50
70
50
80
70
95
80

110

130

80
95

115
110
110

95

110
110
114.3

130

114.3
114.3
114.3
114.3

ØL

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

ØG
115
115
115
115
115
115
115
115
115

145
150
145
145
150
145
145
145
145
200
200
200
200
200
200
200

ØH

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

13.5
13.5
13.5
13.5
13.5
13.5
13.5

ØJ

14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
20
20
20
20
20
20
20

K

10

9
9
9
9
9
9

10

9

10
10
10
10
10
10
10
10

8
5
5
7
5
5
5
5

M

10
10

5

10

5

12
10
10
10
10
10
10
10
10
10
10
10
10

7

12
10
12
12
12
12

ØN

115

100

70
90
70

100

90

115

100
145
165
100

115

165
145
145

115

145
145
200
165
200
200
200
200

P

M8
M6
M4
M6
M5
M6
M5
M8
M6
M8
M10
M6
M8
M8
M8
M8
M6
M8
M8
M12
M10
M12
M12
M12
M12

Q

20
15
10
15
10
15
15
20
15

-
-

12

-
-

20
20
12
15
20

-
-

22
25
22
22

45˚
45˚
45˚
45˚
45˚
45˚
45˚
45˚
60˚
30˚
45˚
45˚
30˚
45˚
30˚
30˚
30˚
45˚

45˚

45˚
45˚
45˚
45˚

D

ØL

ØA

ØN

ØG

(Flange mounting hole)

4-ØH ØJ spot facing

(Flange mounting hole)

4-ØH ØJ spot facing

Tap hole for hang-up M8 x 14

Tap hole for hang-up

M8 x 14

(Motor mounting tap hole)

4-Nominal P x Depth Q

C

K

M

ØF

ØE

Circle type (30S)

Circle type

Circle type

(30S)

Square type

D

M

ØL

B

B

C

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH24

C

Parts No.

Code

L

M
Q

R

30S203L

*

30S203M

*

30S203Q

*

30S203R

*

ØA

170
170
170
170

33
33
33
33

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

28
28
28
28

ØE

70
80
70
70

110
110
110
110

ØF

h7
h7
h7
h7

+0.035

0

+0.035

0

+0.030

0

+0.035

0

110

95
80
95

ØL

H7
H7
H7
H7

ØG

138
138
138
138

ØH

9
9
9
9

ØJ

14
14
14
14

K

8
8

10

8

M

8
8

10
10

ØN

145

115

100

115

P

M8
M8
M6
M6

Q

20
17
12
12

45˚
45˚
45˚
45˚

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH7

GH17

GH24

GH40 /

GH100

Motor Flange Dimension (mm)

Parts No.

Code

A
B
C
E
F
K

L

M

P

W

C
D
E
G
H
B
A
B
C
D

F
K
L

N
X

10S203A

*

10S203B

*

10S203C

*

10S203E

*

10S203F

*

10S203K

*

10S203L

*

10S203M

*

10S203P

*

10S203W

*

20S203C

*

20S203D

*

20S203E

*

20S203G

*

20S203H

*

30S203B

*

40S203A

*

40S203B

*

40S203C

*

40S203D

*

40S203F

*

40S203K

*

40S203L

*

40S203N

*

40S203X

*

ØA

165
215
190
155
165
230
230
190
230
190
230
230
270
270
270
165
250
270
270
300
270
270
250
330
250

B

130
165
150
120
130
180
180
150
180
150
180
180
220
220
220
130
200
220
220
250
220
220
200
265
200

C

35
35
35
35
55
55
70
55
35
35
25
65
25
65
45
46
30
30
48
30
30
95
64

117

30

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

30
30
30
30
50
50
65
50
30
30
20
60
20
60
40
41
25
25
43
25
25
90
59

112

25

ØE

72
72
72
72
72
72
72
72
72
72

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

80
80
80
80
80
80
80
80
80
80

110
110
110
110
110
110
114.3
114.3
114.3
114.3
114.3
114.3
114.3
114.3
114.3

ØF

h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7

+0.035

0

+0.040

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.046

0

+0.046

0

+0.046

0

+0.035

0

+0.040

0

+0.046

0

+0.046

0

+0.046

0

+0.046

0

+0.046

0

+0.040

0

+0.046

0

+0.040

0

110
150
130
110
110
114.3
114.3
130
114.3
115
114.3
114.3
200
200
200
110
180
200
200
230
200
200
180
250
180

ØL

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

ØG

95
95
95
95
95
95
95
95
95
95

145
145
145
145
145
145
150
150
150
150
150
150
150
150
150

ØH

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

13.5
13.5
13.5
13.5
13.5
13.5
13.5
13.5
13.5

ØJ

14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
20
20
20
20
20
20
20
20
20

K

10

9
9
9

10
10
10
10
10

9

10
10

5

10
10

8
5
5
5
5
5
5
5
5
5

M

11
10
11
10
11
12
12
12
12
11
10
10

7

10
10
10

7
7

10

7
7

10
12
10

7

ØN

145
185
165
130
145
200
200
165
200
165
200
200
235
235
235
145
215
235
235
265
250
235
215
300
215

P

M8
M10
M10
M8
M8
M12
M12
M10
M12
M8
M12
M12
M12
M12
M12
M8
M12
M12
M12
M12
M8
M12
M12
M16
M14

Q

20

-
-

20
20
20
20
20

-
-
-

20

-

20
20
13

-
-

25

-

20
25
15
25

-

Square type (30S)

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH24

Motor Flange Dimension (mm)

Parts No.

Code

S

C
D
E

F

H

30S203-

*

30S203C

*

30S203D

*

30S203E

*

30S203F

*

30S203H

*

ØA

230

230
250
270
270
270

C

78

46
33
33
65
65

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

73

41
28
28
60
60

ØE

100

100
100
100

95
95

110

110
110
110
110
110

ØF

h7

h7
h7
h7
h7
h7

+0.035

0

+0.035

0

+0.040

0

+0.046

0

+0.046

0

+0.046

0

114.3

114.3

180
200
200
200

ØL

H7

H7
H7
H7
H7
H7

ØG

138

138
138
138
138
138

ØH

9

9
9
9
9
9

ØJ

-

14
14
14
14
14

K

9

9

10
10

9
9

M

10

6
8
8

10
10

ØN

200
138
200
215
235
235
250

P

M12
M14
M12
M12
M12
M12
M8

Q

13
13
13

-
-

20
20

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

D

ØL

ØA

ØN

ØG

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Flange mounting hole)

6-Ø, depth Q

C

K

M

ØF

ØE

ØF

ØE

K

M

ØL

ØF

ØE

K

(Flange mounting hole)

6-ØH ØJ spot facing

ØA

ØN

ØG

ØA

ØN

ØG

Motor Flange Dimension (mm)

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

D

C

background image

Square

type
(30S)

22

23

Circle type

Square type

External Dimension Drawing

Motor Flange

B

174

180
200
220
220
220

Model

GH7

GH17

GH24

GH40 /

GH100

C

Motor Flange Dimension (mm)

Parts No.

Code

S
D

G
H

J

N
Q
X

AE

S
A
B
F
K

L

U

W

N
S
E
G
H

M

T

W

10S203-

*

10S203D

*

10S203G

*

10S203H

*

10S203J

*

10S203N

*

10S203Q

*

10S203X

*

10S203AE

*

20S203-

*

20S203A

*

20S203B

*

20S203F

*

20S203K

*

20S203L

*

20S203U

*

20S203W

*

30S203N

*

40S203-

*

40S203E

*

40S203G

*

40S203H

*

40S203M

*

40S203T

*

40S203W

*

ØA

135
135
135
135
135
135
135
135
135
170
190
170
170
190
170
170
170
170
230
230
230
230
230
230
230

35
35
35
35
35
55
35
55
25
25
25
25
25
25
65
40
25
65
30
30
30
48
62
92
58

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

30
30
30
30
30
50
30
50
20
20
20
20
20
20
60
35
20
60
25
25
25
43
57
87
53

ØE

72
72
60
60
60
72
60
72
70

100
100

72
80

100
100
100

70

100
100
100
100
100
100
100
100

80
80
80
80
80
80
80
80
80

110
110
110
110
110
110
110
110
110
114.3
114.3
114.3
114.3
114.3
114.3
114.3

ØF

h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7

+0.035

0

+0.030

0

+0.025

0

+0.030

0

+0.025

0

+0.030

0

+0.030

0

+0.035

0

+0.030

0

+0.035

0

+0.040

0

+0.030

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

95
80
50
70
50
80
70
95
80

110

130

80
95

115
110
110

95

110
110
114.3

130

114.3
114.3
114.3
114.3

ØL

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

ØG
115
115
115
115
115
115
115
115
115

145
150
145
145
150
145
145
145
145
200
200
200
200
200
200
200

ØH

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

13.5
13.5
13.5
13.5
13.5
13.5
13.5

ØJ

14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
20
20
20
20
20
20
20

K

10

9
9
9
9
9
9

10

9

10
10
10
10
10
10
10
10

8
5
5
7
5
5
5
5

M

10
10

5

10

5

12
10
10
10
10
10
10
10
10
10
10
10
10

7

12
10
12
12
12
12

ØN

115

100

70
90
70

100

90

115

100
145
165
100

115

165
145
145

115

145
145
200
165
200
200
200
200

P

M8
M6
M4
M6
M5
M6
M5
M8
M6
M8
M10
M6
M8
M8
M8
M8
M6
M8
M8
M12
M10
M12
M12
M12
M12

Q

20
15
10
15
10
15
15
20
15

-
-

12

-
-

20
20
12
15
20

-
-

22
25
22
22

45˚
45˚
45˚
45˚
45˚
45˚
45˚
45˚
60˚
30˚
45˚
45˚
30˚
45˚
30˚
30˚
30˚
45˚

45˚

45˚
45˚
45˚
45˚

D

ØL

ØA

ØN

ØG

(Flange mounting hole)

4-ØH ØJ spot facing

(Flange mounting hole)

4-ØH ØJ spot facing

Tap hole for hang-up M8 x 14

Tap hole for hang-up

M8 x 14

(Motor mounting tap hole)

4-Nominal P x Depth Q

C

K

M

ØF

ØE

Circle type (30S)

Circle type

Circle type

(30S)

Square type

D

M

ØL

B

B

C

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH24

C

Parts No.

Code

L

M
Q

R

30S203L

*

30S203M

*

30S203Q

*

30S203R

*

ØA

170
170
170
170

33
33
33
33

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

28
28
28
28

ØE

70
80
70
70

110
110
110
110

ØF

h7
h7
h7
h7

+0.035

0

+0.035

0

+0.030

0

+0.035

0

110

95
80
95

ØL

H7
H7
H7
H7

ØG

138
138
138
138

ØH

9
9
9
9

ØJ

14
14
14
14

K

8
8

10

8

M

8
8

10
10

ØN

145

115

100

115

P

M8
M8
M6
M6

Q

20
17
12
12

45˚
45˚
45˚
45˚

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH7

GH17

GH24

GH40 /

GH100

Motor Flange Dimension (mm)

Parts No.

Code

A
B
C
E
F
K

L

M

P

W

C
D
E
G
H
B
A
B
C
D

F
K
L

N
X

10S203A

*

10S203B

*

10S203C

*

10S203E

*

10S203F

*

10S203K

*

10S203L

*

10S203M

*

10S203P

*

10S203W

*

20S203C

*

20S203D

*

20S203E

*

20S203G

*

20S203H

*

30S203B

*

40S203A

*

40S203B

*

40S203C

*

40S203D

*

40S203F

*

40S203K

*

40S203L

*

40S203N

*

40S203X

*

ØA

165
215
190
155
165
230
230
190
230
190
230
230
270
270
270
165
250
270
270
300
270
270
250
330
250

B

130
165
150
120
130
180
180
150
180
150
180
180
220
220
220
130
200
220
220
250
220
220
200
265
200

C

35
35
35
35
55
55
70
55
35
35
25
65
25
65
45
46
30
30
48
30
30
95
64

117

30

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.030

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

30
30
30
30
50
50
65
50
30
30
20
60
20
60
40
41
25
25
43
25
25
90
59

112

25

ØE

72
72
72
72
72
72
72
72
72
72

100
100
100
100
100
100
100
100
100
100
100
100
100
100
100

80
80
80
80
80
80
80
80
80
80

110
110
110
110
110
110
114.3
114.3
114.3
114.3
114.3
114.3
114.3
114.3
114.3

ØF

h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7
h7

+0.035

0

+0.040

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.040

0

+0.035

0

+0.035

0

+0.035

0

+0.035

0

+0.046

0

+0.046

0

+0.046

0

+0.035

0

+0.040

0

+0.046

0

+0.046

0

+0.046

0

+0.046

0

+0.046

0

+0.040

0

+0.046

0

+0.040

0

110
150
130
110
110
114.3
114.3
130
114.3
115
114.3
114.3
200
200
200
110
180
200
200
230
200
200
180
250
180

ØL

H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7
H7

ØG

95
95
95
95
95
95
95
95
95
95

145
145
145
145
145
145
150
150
150
150
150
150
150
150
150

ØH

9
9
9
9
9
9
9
9
9
9
9
9
9
9
9
9

13.5
13.5
13.5
13.5
13.5
13.5
13.5
13.5
13.5

ØJ

14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
14
20
20
20
20
20
20
20
20
20

K

10

9
9
9

10
10
10
10
10

9

10
10

5

10
10

8
5
5
5
5
5
5
5
5
5

M

11
10
11
10
11
12
12
12
12
11
10
10

7

10
10
10

7
7

10

7
7

10
12
10

7

ØN

145
185
165
130
145
200
200
165
200
165
200
200
235
235
235
145
215
235
235
265
250
235
215
300
215

P

M8
M10
M10
M8
M8
M12
M12
M10
M12
M8
M12
M12
M12
M12
M12
M8
M12
M12
M12
M12
M8
M12
M12
M16
M14

Q

20

-
-

20
20
20
20
20

-
-
-

20

-

20
20
13

-
-

25

-

20
25
15
25

-

Square type (30S)

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

Model

GH24

Motor Flange Dimension (mm)

Parts No.

Code

S

C
D
E

F

H

30S203-

*

30S203C

*

30S203D

*

30S203E

*

30S203F

*

30S203H

*

ØA

230

230
250
270
270
270

C

78

46
33
33
65
65

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

0

-0.035

D

73

41
28
28
60
60

ØE

100

100
100
100

95
95

110

110
110
110
110
110

ØF

h7

h7
h7
h7
h7
h7

+0.035

0

+0.035

0

+0.040

0

+0.046

0

+0.046

0

+0.046

0

114.3

114.3

180
200
200
200

ØL

H7

H7
H7
H7
H7
H7

ØG

138

138
138
138
138
138

ØH

9

9
9
9
9
9

ØJ

-

14
14
14
14
14

K

9

9

10
10

9
9

M

10

6
8
8

10
10

ØN

200
138
200
215
235
235
250

P

M12
M14
M12
M12
M12
M12
M8

Q

13
13
13

-
-

20
20

Motor Mounting Dimension (mm)

Reduction Gear Mounting Dimension (mm)

D

ØL

ØA

ØN

ØG

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Motor mounting tap hole)

4-Nominal P x Depth Q

(Flange mounting hole)

6-Ø, depth Q

C

K

M

ØF

ØE

ØF

ØE

K

M

ØL

ØF

ØE

K

(Flange mounting hole)

6-ØH ØJ spot facing

ØA

ØN

ØG

ØA

ØN

ØG

Motor Flange Dimension (mm)

The shape of the part shown here is only a representation.

For this reason, the actual shape may differ from the drawing shown here.

The part numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

D

C

background image

23

0

-0.4

24

25

Combination with Non-standard Product

2. Manufacturing of input spline

3. Motor flange (blank)

45˚

45˚

L

*

1

LD

LC

F

LB

LA

*

3

Spline

(Specifications are indicated below.)

Plunge cut length

(This is in the h9 area)

ØDB

ØDA

ØDC

ØD

*

2

1. Input spline blank

For the combination with a non-standard product, use a semi-processed product

(for the GH100, however, a semi-processed product is not available)

.

For Y1 taper shaft or straight shaft with key

For Y2 straight shaft without key

L

45

30

LD

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

45

Z

1

(E)

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

45

30

L

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

Z

1

(E)

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

(E)

45

30

L

LD

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

Z

1

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

M8 depth 14

E

H

G

F

ØC

ØD

ØB ØA

The parts numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

In the designing process, determine the hole size for the motor flange mounting bolt in

reference to the external dimension drawing of reduction gear.

*

1

: L must equal or exceed LD.

*

2

: øD must equal or exceed øDC.

*

3

: LA is the spline effective teeth width.

Model

GH7

GH24
GH40

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(52)
(62)
(70)

Parts No.

Code

Y1
Y1
Y1

10S140-

*

30S140-

*

40S140-

*

ØD

32
42
50

ØDA

4.5
6.6

11

ØDB

24
32
40

28.2
36.2
45.2

+0.1

0

+0.1

0

+0.1

0

Z

L

137
159
194

L2

5
7
8

LC

58
65
95.5

LD

94

100
128.5

Model

GH17

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(41)

Parts No.

Code

Y1

20S140-

*

ØD

38.2

ØDA

6.6

ØDB

26

38.2

+0.1

0

Z

L

137

L2

7

LC

74

LD

-

Model

GH7

GH17
GH24
GH40

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(48)
(50)
(64)
(58)

Parts No.

Code

Y2
Y2
Y2
Y2

10S140A

*

20S140A

*

30S140A

*

40S140A

*

ØD

53
63
63
70

ØDA

4.5
6.6
6.6

11

ØDB

24
26
32
40

28.2
38
36
45

+0.1

0

+0.2

+0.1

+0.2

+0.1

+0.2

+0.1

Z

21
23
27
34

0

-0.4

0

-0.4

0

-0.4

0

-0.6

L

133
146
161
184

L2

5
7
7
8

LC

58
74
65
95.5

LD

90
99

100
131

Model

GH7

GH17
GH24
GH40

GH100

ØDA

14
16
18
26
30

ØDB

24
26
32
40
52

28
38
36
45

55

h9
h9
h9
h9
h9

F(Min)

25
16
30
28
30

LA
23
33
20
34
44

LB

40
50
40
52
84

LC

58
74
65
95.5

155

LD

90
99

100
128.5
200

0

-0.052

0

-0.062

0

-0.062

0

-0.062

0

-0.074

ØDC

Model

GH7

GH17
GH40

Ø

C

Motor flange size  (mm)

ØD

135
166
266

Parts No.

Code

Y1
Y1
Y1

10S240-

*

20S240-

*

40S240-

*

ØA

140
170
230

ØB

70
70

100

80

110
114.3

h7
h7
h7

0

-0.030

0

-0.035

0

-0.035

E

60
50
50

F

27
22
22

G

5
5
5

H

45
35

32.5

Spline specifications

GH7

GH17

GH24

GH40

Side fit

Class b

-0.078

-0.012

13.564

Ø1.80

10

10

20˚

1.00

Low tooth

+0.8

12 x 10 x 1.0 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.078

-0.012

16.954

Side fit

Class b

Ø2.25

12.5

10

20˚

1.25

Low tooth

+0.8

15 x 10 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.084

-0.013

19.225

Side fit

Class b

Ø2.25

15

12

20˚

1.25

Low tooth

+0.6

17 x 12 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.089

-0.013

27.183

Side fit

Class b

Ø2.25

22.5

18

20˚

1.25

Low tooth

+0.8

25 x 18 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

GH100

-0.092

-0.014

32.258

Side fit

Class b

Ø2.25

27.5

22

20˚

1.25

Low tooth

+0.8

30 x 22 x 1.25 (JIS D2001 Appendix)

Involute spline for automobile (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

Material: SCM415 HNR

Surface finishing: Carburizing and quenching

Surface hardness: HRC58 to 62

Applicable depth of

quench-hardened case: 0.3 to 0.7 mm

(HV513)

28 h9
36 h9
45 h9

0

- 0.052

0

- 0.062

0

- 0.062

38 h9

0

- 0.062

21
27
34

0

-0.4

0

-0.4

0

-0.4

28 h9
38 h9
36 h9
45 h9

0

- 0.052

0

- 0.062

0

- 0.062

0

- 0.062

If a semi-processed input spline product is

also not available, manufacture the correct

input spline according to the following

dimensions.

When you use the following semi-processed product, order motor flange code “Y1”.

When determining the motor flange length (thickness), take the input spline dimension and the

input spline insertion amount in the reduction gear into consideration (refer to page 17).

background image

23

0

-0.4

24

25

Combination with Non-standard Product

2. Manufacturing of input spline

3. Motor flange (blank)

45˚

45˚

L

*

1

LD

LC

F

LB

LA

*

3

Spline

(Specifications are indicated below.)

Plunge cut length

(This is in the h9 area)

ØDB

ØDA

ØDC

ØD

*

2

1. Input spline blank

For the combination with a non-standard product, use a semi-processed product

(for the GH100, however, a semi-processed product is not available)

.

For Y1 taper shaft or straight shaft with key

For Y2 straight shaft without key

L

45

30

LD

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

45

Z

1

(E)

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

45

30

L

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

Z

1

(E)

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

(E)

45

30

L

LD

LC

(ØDC)

ØDB ØDA

Z

Z

Section Z-Z

(Bolt width)

ØD

11

L2

Z

1

Modify this part according to the dimension marked with an asterisk.

Center hole

During the modification work, make a plunge cut.

(Bolt width)

M8 depth 14

E

H

G

F

ØC

ØD

ØB ØA

The parts numbers attached with

at the end are our revised numbers.

These are subject to change without advance notice.

In the designing process, determine the hole size for the motor flange mounting bolt in

reference to the external dimension drawing of reduction gear.

*

1

: L must equal or exceed LD.

*

2

: øD must equal or exceed øDC.

*

3

: LA is the spline effective teeth width.

Model

GH7

GH24
GH40

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(52)
(62)
(70)

Parts No.

Code

Y1
Y1
Y1

10S140-

*

30S140-

*

40S140-

*

ØD

32
42
50

ØDA

4.5
6.6

11

ØDB

24
32
40

28.2
36.2
45.2

+0.1

0

+0.1

0

+0.1

0

Z

L

137
159
194

L2

5
7
8

LC

58
65
95.5

LD

94

100
128.5

Model

GH17

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(41)

Parts No.

Code

Y1

20S140-

*

ØD

38.2

ØDA

6.6

ØDB

26

38.2

+0.1

0

Z

L

137

L2

7

LC

74

LD

-

Model

GH7

GH17
GH24
GH40

Ø

DC

Ø

Input Spline Dimension (mm)

(E)

(48)
(50)
(64)
(58)

Parts No.

Code

Y2
Y2
Y2
Y2

10S140A

*

20S140A

*

30S140A

*

40S140A

*

ØD

53
63
63
70

ØDA

4.5
6.6
6.6

11

ØDB

24
26
32
40

28.2
38
36
45

+0.1

0

+0.2

+0.1

+0.2

+0.1

+0.2

+0.1

Z

21
23
27
34

0

-0.4

0

-0.4

0

-0.4

0

-0.6

L

133
146
161
184

L2

5
7
7
8

LC

58
74
65
95.5

LD

90
99

100
131

Model

GH7

GH17
GH24
GH40

GH100

ØDA

14
16
18
26
30

ØDB

24
26
32
40
52

28
38
36
45

55

h9
h9
h9
h9
h9

F(Min)

25
16
30
28
30

LA
23
33
20
34
44

LB

40
50
40
52
84

LC

58
74
65
95.5

155

LD

90
99

100
128.5
200

0

-0.052

0

-0.062

0

-0.062

0

-0.062

0

-0.074

ØDC

Model

GH7

GH17
GH40

Ø

C

Motor flange size  (mm)

ØD

135
166
266

Parts No.

Code

Y1
Y1
Y1

10S240-

*

20S240-

*

40S240-

*

ØA

140
170
230

ØB

70
70

100

80

110
114.3

h7
h7
h7

0

-0.030

0

-0.035

0

-0.035

E

60
50
50

F

27
22
22

G

5
5
5

H

45
35

32.5

Spline specifications

GH7

GH17

GH24

GH40

Side fit

Class b

-0.078

-0.012

13.564

Ø1.80

10

10

20˚

1.00

Low tooth

+0.8

12 x 10 x 1.0 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.078

-0.012

16.954

Side fit

Class b

Ø2.25

12.5

10

20˚

1.25

Low tooth

+0.8

15 x 10 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.084

-0.013

19.225

Side fit

Class b

Ø2.25

15

12

20˚

1.25

Low tooth

+0.6

17 x 12 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

-0.089

-0.013

27.183

Side fit

Class b

Ø2.25

22.5

18

20˚

1.25

Low tooth

+0.8

25 x 18 x 1.25 (JIS B1603 Appendix)

Involute spline (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

GH100

-0.092

-0.014

32.258

Side fit

Class b

Ø2.25

27.5

22

20˚

1.25

Low tooth

+0.8

30 x 22 x 1.25 (JIS D2001 Appendix)

Involute spline for automobile (shaft)

Tool

Pin diameter

Face

width

Remarks

Pitch circle diameter

Number of teeth

Addendum modification coefficient

Over-pin diameter

Pressure angle

Module

Class

Tooth form

Material: SCM415 HNR

Surface finishing: Carburizing and quenching

Surface hardness: HRC58 to 62

Applicable depth of

quench-hardened case: 0.3 to 0.7 mm

(HV513)

28 h9
36 h9
45 h9

0

- 0.052

0

- 0.062

0

- 0.062

38 h9

0

- 0.062

21
27
34

0

-0.4

0

-0.4

0

-0.4

28 h9
38 h9
36 h9
45 h9

0

- 0.052

0

- 0.062

0

- 0.062

0

- 0.062

If a semi-processed input spline product is

also not available, manufacture the correct

input spline according to the following

dimensions.

When you use the following semi-processed product, order motor flange code “Y1”.

When determining the motor flange length (thickness), take the input spline dimension and the

input spline insertion amount in the reduction gear into consideration (refer to page 17).

background image

The tolerance of key width should be

in compliance with “Js9” (JIS ordinary

class).

The tolerance of key height should be

“0” to “+0.2”.

*

The tolerance of key height defined by JIS is “0” to “+0.1”.

However, with consideration given to the tilt of the slotter

tool for the keyway, we define the dimensional tolerance as

above.

26

27

Engineering Notes

1. Input spline motor shaft hole design

Clearance

A

h

+0.2 0

k  Js9

t

k

Ød

0.1 to 0.3

b

Ød

We define the relief width “b” as follows:
Shaft diameter (Ød)

Relief width (b)

Ød     25 mm

5 mm

Ød     25 mm

7 mm

3) Relief hole for processing keyway

2) Study of wall thickness between keyway and hub outside diameter

1) Tolerance of key width and height

4) Relief hole for shaft hole polishing and its width

5) Attachment to the servomotor

Reference for the motor shaft edge contact

(Recommended by Nabtesco Corporation)
The input gear reference mounting position is “A”, which is

the edge of the motor shaft. (There is a clearance between

the edge of the motor shaft base and the end face of the input gear.)

(1) For straight type (without key)

(4) For 1/10 taper

(3) For straight type (stud bolt with key)

(2) For straight type (with key)

A

*

B

*

(4) Hexagon socket head cap bolt

Motor shaft

(5) Hexagon nut (1 type)

(4) Hexagon nut (3 types)

Key

(2) Stud bolt

(3) Seal washer

(1) Input spline

Motor shaft

Motor shaft

Bolt width

Key

(3) Wedge friction coupling

(2) Plate

(2) Hexagon socket head

cap set screw

(1) Input spline

(1) Input spline

Enlarged drawing

Enlarged drawing

*

Adjust the deviation of “A” at the edge of the input spline to

70 μm or less against “B” on the motor mounting pilot diameter.

There are various different diameters of the

motor shaft. For each shaft diameter, we

define the tolerance of key width and key

height as follows.

We define the wall thickness "t" between

the shaft hole diameter and the outside

diameter as shown on the right.

When processing a keyway, a relief hole for

chippings will be required.
We define the diameter of the relief hole

(drilled hole) as follows.

For accuracy of gear and centering of the

shaft hole diameter, the hole is polished.

At this point, be sure to leave a relief width

(polish 0.1 to 0.3 mm along the radius) at the

back of the shaft hole.

Wall thickness “t”     3

(based on our past results)

*

If the wall thickness is below “t” defined here, the hardness

of the core increases during quenching (carburizing),

causing the core to be likely bent or twisted, which  will

require a masking process. In addition, it could also cause a

swell or tilt of keyway toward the shaft, invalidating the

symmetry feature of keyway width.

Drilled hole (Ød) = k + 2 mm

*

The above dimension is determined with

consideration given to the tolerance of core

misalignment during drilling.

Motor shaft

Woodruff key

(1) Input spline

(2) Draw bolt

(4) Hexagon nut

(3 types)

(5) Hexagon nut

(1 type)

(3) O-ring or

seal washer

The following is a representative case for connecting an input spline to the servomotor shaft.

background image

The tolerance of key width should be

in compliance with “Js9” (JIS ordinary

class).

The tolerance of key height should be

“0” to “+0.2”.

*

The tolerance of key height defined by JIS is “0” to “+0.1”.

However, with consideration given to the tilt of the slotter

tool for the keyway, we define the dimensional tolerance as

above.

26

27

Engineering Notes

1. Input spline motor shaft hole design

Clearance

A

h

+0.2 0

k  Js9

t

k

Ød

0.1 to 0.3

b

Ød

We define the relief width “b” as follows:
Shaft diameter (Ød)

Relief width (b)

Ød     25 mm

5 mm

Ød     25 mm

7 mm

3) Relief hole for processing keyway

2) Study of wall thickness between keyway and hub outside diameter

1) Tolerance of key width and height

4) Relief hole for shaft hole polishing and its width

5) Attachment to the servomotor

Reference for the motor shaft edge contact

(Recommended by Nabtesco Corporation)
The input gear reference mounting position is “A”, which is

the edge of the motor shaft. (There is a clearance between

the edge of the motor shaft base and the end face of the input gear.)

(1) For straight type (without key)

(4) For 1/10 taper

(3) For straight type (stud bolt with key)

(2) For straight type (with key)

A

*

B

*

(4) Hexagon socket head cap bolt

Motor shaft

(5) Hexagon nut (1 type)

(4) Hexagon nut (3 types)

Key

(2) Stud bolt

(3) Seal washer

(1) Input spline

Motor shaft

Motor shaft

Bolt width

Key

(3) Wedge friction coupling

(2) Plate

(2) Hexagon socket head

cap set screw

(1) Input spline

(1) Input spline

Enlarged drawing

Enlarged drawing

*

Adjust the deviation of “A” at the edge of the input spline to

70 μm or less against “B” on the motor mounting pilot diameter.

There are various different diameters of the

motor shaft. For each shaft diameter, we

define the tolerance of key width and key

height as follows.

We define the wall thickness "t" between

the shaft hole diameter and the outside

diameter as shown on the right.

When processing a keyway, a relief hole for

chippings will be required.
We define the diameter of the relief hole

(drilled hole) as follows.

For accuracy of gear and centering of the

shaft hole diameter, the hole is polished.

At this point, be sure to leave a relief width

(polish 0.1 to 0.3 mm along the radius) at the

back of the shaft hole.

Wall thickness “t”     3

(based on our past results)

*

If the wall thickness is below “t” defined here, the hardness

of the core increases during quenching (carburizing),

causing the core to be likely bent or twisted, which  will

require a masking process. In addition, it could also cause a

swell or tilt of keyway toward the shaft, invalidating the

symmetry feature of keyway width.

Drilled hole (Ød) = k + 2 mm

*

The above dimension is determined with

consideration given to the tolerance of core

misalignment during drilling.

Motor shaft

Woodruff key

(1) Input spline

(2) Draw bolt

(4) Hexagon nut

(3 types)

(5) Hexagon nut

(1 type)

(3) O-ring or

seal washer

The following is a representative case for connecting an input spline to the servomotor shaft.

background image

Note: 1. The tightening torque values listed are for steel or cast iron material.

2. If softer material, such as aluminum or stainless, is used, limit the tightening torque. Also pay attention to the system requirements of the

transmission torque.

28

29

Engineering Notes

2. Installation of the reduction gear and mounting it to the output shaft

Note: When using any equivalent washer, select it with special care given to its outside diameter.

Hexagon socket head cap screw

nominal size x pitch

Tightening torque

(Nm)

1) Bolt tightening torque and tightening force

3. Lubrication

Specified grease name

2) Calculation of allowable transmission torque of bolts

9.01

±

0.49

15.6

±

0.78

37.2

±

1.86

73.5

±

3.43

129

±

6.37

205

±

10.2

319

±

15.9

Tightening force

F

(N)
9310

13180
23960
38080
55100
75860

103410

Bolt specification

Hexagon socket head cap screw

JIS B 1176 or Equivalent

Strength class

JIS B 1051  12.9 or Equivalent

Thread

JIS B 0205 6 g or class 2 or Equivalent

3) Serrated lock washer External teeth for hexagonal socket head cap screw

T
F
D

μ

n

Allowable transmission torque by tightening bolt  (Nm)
Bolt tightening force  (N)
Bolt mounting P.C.D  (mm)
Friction factor

μ

=0.15: When grease remains on the mating face.

μ

=0.20: When grease is removed from the mating face.

Number of bolts  (pcs.)

(Unit: mm)

ID and OD of Belleville

spring washer

Nominal

size

D

d

Basic size

t

H

5
6
8

10
12
14
16

5.25
6.4
8.4
10.6
12.6
14.6
16.9

8.5

10

13
16
18
21
24

0.6
1.0
1.2
1.5
1.8
2.0
2.3

0.85
1.25
1.55
1.9
2.2
2.5
2.8

Grease name

Molywhite RE00

Manufacturer

Nabtesco Corporation

Ambient temperature

-10 to 40˚C

When installing a reduction gear and mounting it to the output shaft, use hexagon socket head cap screws and tighten to the

torque, as specified below, in order to satisfy the momentary maximum allowable torque, which is noted in the rating table.

Employment of the Belleville spring washer is recommended to prevent the bolt from loosening and protect the bolt cross

section from flaws.

The standard lubrication method for the GH series is greasing.

Before shipping the reduction gear, grease recommended by Nabtesco Corporation (Molywhite RE NO 00) is filled into the

product.

When a reduction gear filled with the appropriate amount of grease is operated, the standard replacement time due to grease

deterioration is 20,000 hours.

When using the gear with deteriorated grease or under an inappropriate ambient temperature condition (40˚C or more),check

the deterioration condition of the grease and determine the appropriate replacement cycle.

Name: Belleville spring washer (made by Heiw Hatsujyo Industry Co., Ltd.)

Corporation symbol: CDW-2H-nominal size

CDW-2L-5 (for only M5)

Material: S50C to S70C

Hardness: HRC40 to 48

D

t

H

d

Note: VIGOGREASE RE0 is also applicable. If you wish to use it, please contact us.

4. Request regarding system design

If the lubricant used in the reduction gear leaks or the motor has a defect, the reduction gear needs to be removed.

Carefully design the system considering this requirement.

M5    0.8
M6    1.0
M8    1.25
M10    1.5
M12    1.75
M14    2.0
M16    2.0

T = F

n

2    1,000

D

μ

background image

Note: 1. The tightening torque values listed are for steel or cast iron material.

2. If softer material, such as aluminum or stainless, is used, limit the tightening torque. Also pay attention to the system requirements of the

transmission torque.

28

29

Engineering Notes

2. Installation of the reduction gear and mounting it to the output shaft

Note: When using any equivalent washer, select it with special care given to its outside diameter.

Hexagon socket head cap screw

nominal size x pitch

Tightening torque

(Nm)

1) Bolt tightening torque and tightening force

3. Lubrication

Specified grease name

2) Calculation of allowable transmission torque of bolts

9.01

±

0.49

15.6

±

0.78

37.2

±

1.86

73.5

±

3.43

129

±

6.37

205

±

10.2

319

±

15.9

Tightening force

F

(N)
9310

13180
23960
38080
55100
75860

103410

Bolt specification

Hexagon socket head cap screw

JIS B 1176 or Equivalent

Strength class

JIS B 1051  12.9 or Equivalent

Thread

JIS B 0205 6 g or class 2 or Equivalent

3) Serrated lock washer External teeth for hexagonal socket head cap screw

T
F
D

μ

n

Allowable transmission torque by tightening bolt  (Nm)
Bolt tightening force  (N)
Bolt mounting P.C.D  (mm)
Friction factor

μ

=0.15: When grease remains on the mating face.

μ

=0.20: When grease is removed from the mating face.

Number of bolts  (pcs.)

(Unit: mm)

ID and OD of Belleville

spring washer

Nominal

size

D

d

Basic size

t

H

5
6
8

10
12
14
16

5.25
6.4
8.4
10.6
12.6
14.6
16.9

8.5

10

13
16
18
21
24

0.6
1.0
1.2
1.5
1.8
2.0
2.3

0.85
1.25
1.55
1.9
2.2
2.5
2.8

Grease name

Molywhite RE00

Manufacturer

Nabtesco Corporation

Ambient temperature

-10 to 40˚C

When installing a reduction gear and mounting it to the output shaft, use hexagon socket head cap screws and tighten to the

torque, as specified below, in order to satisfy the momentary maximum allowable torque, which is noted in the rating table.

Employment of the Belleville spring washer is recommended to prevent the bolt from loosening and protect the bolt cross

section from flaws.

The standard lubrication method for the GH series is greasing.

Before shipping the reduction gear, grease recommended by Nabtesco Corporation (Molywhite RE NO 00) is filled into the

product.

When a reduction gear filled with the appropriate amount of grease is operated, the standard replacement time due to grease

deterioration is 20,000 hours.

When using the gear with deteriorated grease or under an inappropriate ambient temperature condition (40˚C or more),check

the deterioration condition of the grease and determine the appropriate replacement cycle.

Name: Belleville spring washer (made by Heiw Hatsujyo Industry Co., Ltd.)

Corporation symbol: CDW-2H-nominal size

CDW-2L-5 (for only M5)

Material: S50C to S70C

Hardness: HRC40 to 48

D

t

H

d

Note: VIGOGREASE RE0 is also applicable. If you wish to use it, please contact us.

4. Request regarding system design

If the lubricant used in the reduction gear leaks or the motor has a defect, the reduction gear needs to be removed.

Carefully design the system considering this requirement.

M5    0.8
M6    1.0
M8    1.25
M10    1.5
M12    1.75
M14    2.0
M16    2.0

T = F

n

2    1,000

D

μ

background image

30

31

Appendix

z

z

y

x

R

b

c

z

z

y

x

a

b

c

z

z

y

x

a

b

c

z

z

y

x

a

b

c

c /

3

z

z

b

/

3

y

x

a

b

c

c /

3

2

R

x

z

z

y

R

R

z

z

2

R

2

y

x

R

R

1

R

2

z

z

y

x

a

b

b

3

z

a

/

4

z

y

x

a

2

R

R

m

η

I

0

I

Axis of rotation

Axis of gravity O

Object Shape

I

(Inertia Moment), m (Mass)

Object Shape

I

(Inertia Moment), m (Mass)

I

x

= mR

2

1

2

m

= π R

2

I

z

= I

y

I

y

= m

1

4

(                )

R

2

+

I

x

= m ( b

2

+ c

2

)

1

12

I

y

= m ( a

2

+ c

2

)

1

12

I

z

= m ( a

2

+ b

2

)

1

12

m

= abc ρ

m

= abc ρ

1

2

I

x

= m ( b

2

+ c

2

)

1

24

I

y

= m ( c

2

+ 2 a

2

)

1

24

I

z

= m ( b

2

+ 2 a

2

)

1

24

I

x

= m ( b

2

+ c

2

)

1

16

I

y

= m

1

4

(                 )

c

2

4 +

m

=     R bc ρ

π

4

I

z

= m

1

4

(                 )

b

2

4 +

1

2

I

x

= m ( R

1

2

+ R

2

2

)

m

= π ( R

2

2

- R

1

2

)Rρ

I

z

= I

y

{                         }

1

4

I

y

= m ( R

1

2

+ R

2

2

) +

I

x

= m

(                    )

1

12

2

3

b

2

2 +

c

2

I

y

= m

(                    )

1

12

2

3

+

c

2

a

2

m

= abc ρ

1

2

I

z

= m

(               )

a

2

1

12

b

2

2

+

I

z

= I

y

m

= abc ρ

1

2

I

y

= m

(                    )

a

2

c

2

1

12

2

3

+

I

z

= m

(                    )

a

2

b

2

1

12

2

3

+

I

x

= m ( b

2

+ c

2

)

1

36

I

y

= m

(                    )

1

12

5

2

+

b

2

a

2

I

x

= mb

2

5

12

m

= ab

2

ρ

2

3

3

m

= R

2

a ρ

π

3

3

10

I

x

= mR

2

I

z

= I

y

I

y

= m (4 R

2

+ a

2

)

3

80

I

= I

0

+ m η

2

I

0

: Inertia moment of the object

related to the axis of gravity

I

: Inertia moment of the object

related to the axis of rotation that

is parallel to the axis of gravity

η

:

Distance between the axis of

rotation and the axis of gravity

1

2

3

4

5

6

7

8

9

10 Parallel axis theorem

Inertia moment formula

2

R

1

Please complete the form below

and send it with your order.

System configuration and selected motor

We would appreciate if you could provide your system configuration draw-

ing that helps us to understand the speed, constant torque, and load iner-

tia moment of the output shaft for the reduction gear.

Operation pattern

(output shaft for the reduction gear)

External load

(output shaft for the reduction gear)

System configuration

Motor rated output (KW)
Motor rated torque (Nm)
Motor momentary maximum torque (Nm)
Motor rated speed (rpm)

P

T

M0

T

M1

N

M0

Motor model

Acceleration time (s)
Constant speed operation time (s)
Deceleration time (s)
One operation cycle time (s)
Number of operation cycles per day (times)
Number of operating days per year (days)
Constant speed (rpm)
Max. torque for startup (Nm)
Constant torque (Nm)
Max. torque for stop (Nm)

t

1

t

2

t

3

t

4

Q

1

Q

2

N

2

T

1

T

2

T

3

Radial load (N)
Distance to the point of radial load
application (mm)
Axial load (N)
Distance to the point of axial load
application (mm)

W

1

L

1

W

2

L

2

Motor mounting pilot diameter (mm)
Motor mounting bolt P.C.D (mm)
Motor mounting bolt size (mm)
Motor shaft length (mm)
Motor shaft diameter (mm)
Motor shaft effective length (mm)

a
b
c
d
e
g

t

1

t

2

t

3

t

4

N

2

Reduction gear output speed

(rpm)

Time (s)

L

2

L

1

α

1

W

1

W

2

Bolt size c

e

a

d

b

1-248-553-3070                 /  49-211-364677         /  81-6-6341-7182

Area  In North and South America  /  In Europe and Africa   /  In Asia and others

FAX   USA:                                       /  Germany:                    /  Osaka Sales Office:

Order Information Sheet

Company Name:

Name:

Dept. Name:

E-mail:

TEL.                         -                         -

FAX.                         -                         -

Date.

(                        )

g

Please inform us of whether a key is attached or not,

and when it is attached, also inform us of its dimensions.

R

2

3

R

2

3

R

2

3

R

2

3

background image

30

31

Appendix

z

z

y

x

R

b

c

z

z

y

x

a

b

c

z

z

y

x

a

b

c

z

z

y

x

a

b

c

c /

3

z

z

b

/

3

y

x

a

b

c

c /

3

2

R

x

z

z

y

R

R

z

z

2

R

2

y

x

R

R

1

R

2

z

z

y

x

a

b

b

3

z

a

/

4

z

y

x

a

2

R

R

m

η

I

0

I

Axis of rotation

Axis of gravity O

Object Shape

I

(Inertia Moment), m (Mass)

Object Shape

I

(Inertia Moment), m (Mass)

I

x

= mR

2

1

2

m

= π R

2

I

z

= I

y

I

y

= m

1

4

(                )

R

2

+

I

x

= m ( b

2

+ c

2

)

1

12

I

y

= m ( a

2

+ c

2

)

1

12

I

z

= m ( a

2

+ b

2

)

1

12

m

= abc ρ

m

= abc ρ

1

2

I

x

= m ( b

2

+ c

2

)

1

24

I

y

= m ( c

2

+ 2 a

2

)

1

24

I

z

= m ( b

2

+ 2 a

2

)

1

24

I

x

= m ( b

2

+ c

2

)

1

16

I

y

= m

1

4

(                 )

c

2

4 +

m

=     R bc ρ

π

4

I

z

= m

1

4

(                 )

b

2

4 +

1

2

I

x

= m ( R

1

2

+ R

2

2

)

m

= π ( R

2

2

- R

1

2

)Rρ

I

z

= I

y

{                         }

1

4

I

y

= m ( R

1

2

+ R

2

2

) +

I

x

= m

(                    )

1

12

2

3

b

2

2 +

c

2

I

y

= m

(                    )

1

12

2

3

+

c

2

a

2

m

= abc ρ

1

2

I

z

= m

(               )

a

2

1

12

b

2

2

+

I

z

= I

y

m

= abc ρ

1

2

I

y

= m

(                    )

a

2

c

2

1

12

2

3

+

I

z

= m

(                    )

a

2

b

2

1

12

2

3

+

I

x

= m ( b

2

+ c

2

)

1

36

I

y

= m

(                    )

1

12

5

2

+

b

2

a

2

I

x

= mb

2

5

12

m

= ab

2

ρ

2

3

3

m

= R

2

a ρ

π

3

3

10

I

x

= mR

2

I

z

= I

y

I

y

= m (4 R

2

+ a

2

)

3

80

I

= I

0

+ m η

2

I

0

: Inertia moment of the object

related to the axis of gravity

I

: Inertia moment of the object

related to the axis of rotation that

is parallel to the axis of gravity

η

:

Distance between the axis of

rotation and the axis of gravity

1

2

3

4

5

6

7

8

9

10 Parallel axis theorem

Inertia moment formula

2

R

1

Please complete the form below

and send it with your order.

System configuration and selected motor

We would appreciate if you could provide your system configuration draw-

ing that helps us to understand the speed, constant torque, and load iner-

tia moment of the output shaft for the reduction gear.

Operation pattern

(output shaft for the reduction gear)

External load

(output shaft for the reduction gear)

System configuration

Motor rated output (KW)
Motor rated torque (Nm)
Motor momentary maximum torque (Nm)
Motor rated speed (rpm)

P

T

M0

T

M1

N

M0

Motor model

Acceleration time (s)
Constant speed operation time (s)
Deceleration time (s)
One operation cycle time (s)
Number of operation cycles per day (times)
Number of operating days per year (days)
Constant speed (rpm)
Max. torque for startup (Nm)
Constant torque (Nm)
Max. torque for stop (Nm)

t

1

t

2

t

3

t

4

Q

1

Q

2

N

2

T

1

T

2

T

3

Radial load (N)
Distance to the point of radial load
application (mm)
Axial load (N)
Distance to the point of axial load
application (mm)

W

1

L

1

W

2

L

2

Motor mounting pilot diameter (mm)
Motor mounting bolt P.C.D (mm)
Motor mounting bolt size (mm)
Motor shaft length (mm)
Motor shaft diameter (mm)
Motor shaft effective length (mm)

a
b
c
d
e
g

t

1

t

2

t

3

t

4

N

2

Reduction gear output speed

(rpm)

Time (s)

L

2

L

1

α

1

W

1

W

2

Bolt size c

e

a

d

b

1-248-553-3070                 /  49-211-364677         /  81-6-6341-7182

Area  In North and South America  /  In Europe and Africa   /  In Asia and others

FAX   USA:                                       /  Germany:                    /  Osaka Sales Office:

Order Information Sheet

Company Name:

Name:

Dept. Name:

E-mail:

TEL.                         -                         -

FAX.                         -                         -

Date.

(                        )

g

Please inform us of whether a key is attached or not,

and when it is attached, also inform us of its dimensions.

R

2

3

R

2

3

R

2

3

R

2

3

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32

MEMO

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GH 7

GH 17

GH 24

GH 40

High speed Gearheads taking

your servomotor performance to the limit

GH

SERIES,

The

GH

SERIES provides significant advantages in terms of ease-of-use. It is

based on a highly successful product, the Precision Reduction Gear RV, used
in various applications around the world.

1. In the case where Nabtesco confirms that a defect of the Product was caused due to Nabtesco’s design or

manufacture within the Warranty Period of the Product, Nabtesco shall repair or replace such defective

Product at its cost.  The Warranty Period shall be from the delivery of the Product by Nabtesco or its distribu-

tor to you (“Customer”) until the end of one (1) year thereafter, or the end of two thousand (2,000) hours

running of the Product installed into Customer’s equipment, whichever comes earlier.

2. Unless otherwise expressly agreed between the parties in writing, the warranty obligations for the Product

shall be limited to the repair or replacement set forth herein.  OTHER THAN AS PROVIDED HEREIN,

THERE ARE NO WARRATIES ON THE PRODUCT, EXPRESS OR IMPLIED, INCLUDING WITHOUT

LIMITATION ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR

PURPOSE.

3. The warranty obligation under the Section 1 above shall not apply if:

a) the defect was caused due to the use of the Product deviated from the Specifications or the working

conditions provided by Nabtesco;

b) the defect was caused due to exposure to foreign substances or contamination (dirt, sand etc.)
c) lubricant or spare part other than the ones recommended by Nabtesco was used in the Product;
d) the Product was used in an unusual environment (such as high temperature, high humidity, a lot of dust,

corrosive/volatile/inflammable gas,  pressurized/depressurized air, under water/liquid or others except for

those expressly stated in the Specifications);

e) the Product was disassembled, re-assembled, repaired or modified by anyone other than Nabtesco;
f ) the defect was caused due to the equipment into which the Product was installed;
g) the defect was caused due to an accident such as fire, earthquake, lightning, flood or others; or
h) the defect was due to any cause other than the design or manufacturing of the Product.

4. The warranty period for the repaired/replaced Product/part under the Section 1 above shall be the rest of the

initial Warranty Period of the defective Product subjected to such repair/replace.

Warranty

background image

®

Precision Reduction Gear RV

TM

High-speed gearhead

G H   S E R I E S

CAT.150220

(Issued on Feb. 20, 2015)

Rev. 010

● Nabtesco, VIGOGREASE, RV are registered trademarks or trademarks of Nabtesco Corporation.
● Specifications are subject to change without notice.
● The PDF data of this catalog can be downloaded from the following website.
http://precision.nabtesco.com/
If any addition or modification is made to the published information, the PDF data may be updated before the printed catalog.
Due to this, please note that some contents of the PDF data may be changed or revised from those in this catalog.
● Unauthorized reprinting, reproduction, copying, or translation of this catalog in whole or in part is strictly prohibited.

Europe and Africa

North and South America

China

Asia and others

Nabtesco Precision Europe GmbH

Tiefenbroicher Weg 15, 40472 Düesseldorf, Germany
TEL: +49-211-173790  FAX: +49-211-364677
E-MAIL: info@nabtesco.de   www.nabtesco.de

Nabtesco Motion Control Inc. in U.S.A (North America & South America)

23976 Freeway Park Drive, Farmington Hills, MI 48335, USA
TEL: +1-248-553-3020  FAX: +1-248-553-3070
E-MAIL: engineer@nabtescomotioncontrol.com   www.nabtescomotioncontrol.com

Shanghai Nabtesco Motion-equipment Co., Ltd.

Room 1706, Hong Jia Tower, No. 388 Fu Shan Road, Pudong New Area, Shanghai 200122, China
TEL: +86-21-3363-2200  FAX: +86-21-3363-2655
E-MAIL: info@nabtesco-motion.cn   www.nabtesco-motion.cn

Nabtesco Corporation

Osaka Sales Office

21st Fl, Dojima Avanza, 1-6-20 Dojima, Kita-ku, Osaka 530-0003, Japan
TEL: +81-6-6341-7180  FAX: +81-6-6341-7182

Tsu Plant (Engineering Department)

594 Icchoda, Katada-cho, Tsu, Mie 514-8533, Japan
TEL: +81-59-237-4600  FAX: +81-59-237-4610
E-MAIL: P_Information@nabtesco.com   www.nabtesco.com