RU40 Dimensions
RU40

Standard Gear Ratio Model Dimension Drawings〔Gear ratio=15〕
100

115

95

100
57.5

85
1313

φ5 0, 8DP (V and W surfaces)(10DP)

37.5±0.1

φ20 0＋0.021

φ20 ＋0.021(10DP)
042.5※340

21.25±0.05

100±0.03

150

135

φ113

φ55
0

φ27.5−0.021

φ20.5

30°°
60
5×2.5

φ30

2×(2)Φ5＋0.012
0(6)M5×0.8, 10DP

50±0.1, 5DP＋0.012

Unit：mm※57.5※3(2×(4)Φ6.8)

50
100±0.03(4)Φ6.8 THRU

7.580

17.5□65(4)M6×1, 12DP

Motor bracket

32.5

701515

7.5

15

52.5

Output table

42.5※1 For detailed dimensions, refer to the standard specifications onour website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for Standard Gear Ratio Models on the following page.
※4 Use the product code to specify the position of the access hole inthe motor bracket. (Refer to P.4)

7.5

Attachment code ※5 Dimensions
A□

44

B□

48

RU40

High Gear Ratio Model Dimension Drawings〔Gear ratio=45〕

Unit：mm
175
1001151009585

φ513, 5DP

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)
0(6)M5×0.8, 10DP

82.5

97.5

21.25±0.05

100±0.03

40135

150

φ55

φ113

37.5±0.1

φ20 00φ27.5 −0.021

42.5°

φ20.5

60
5×

φ20 0＋0.021＋0.021

※330°

2.5

φ30

7.5
57.5
50±0.1(10DP)(10DP)

13＋0.012080

7.5

Gear box

42.58017.5702.5※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for High Gear Ratio Models on the following page.
※4 The access hole for the gear box is located on side S. (Refer to P.4)

32.5

100±0.03(4)M6×1, 12DP

12.5

50

(4)Φ6.8 THRU

7.515

7.515

(2×(4)Φ6.8)

1552.5

Output table

7※3

RU40 Dimensions
RU40Attachment Code Selection Chart Standard Gear Ratio Models [Gear ratio=24] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhe

Attachment
codeaA□φ9 -0.009

B□0
φ14 -0.011

b0c

Less than φ50
φ45defLess than Less than 25〜26.5
4
13.5
Less than Less than 29.5〜30.5
517.5

g70

Max motor
torqueh(4)M5×0.8, 8DP(4)M5×0.8, 12DP

5.33N・m※1 The most common servomotors suitable for these models are given on page 17.

dφcφbφag

Motor mounting dimensions on the RU

Mountable Motor Dimensions

RU40Attachment Code Selection Chart High Gear Ratio Models [Gear ratio=45] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhe

Attachment
codeaAS0φ8 -0.009-cdefghMax motor
torqueφ30

Less than
6-

25〜33.5

46(4)M4×0.7, 8DP

3.54N・m※1 The most common servomotors suitable for these models are given on page 17.

dφcφb
φag

Motor mounting dimensions on the RUb

Mountable Motor Dimensions

8RU63 Dimensions
RU63

Standard Gear Ratio Model Dimension Drawings〔Gear ratio=20〕
155125120φ5 052.5±0.163※326.25±0.05

180140±0.03

20052.5※30φ40−0.025

φ70

φ33

φ153＋0.025

φ32.5 030°°

φ55

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)
067.5±0.1

60
5×2.5

1077.5(6)M6×1, 12DP

15.5
φ32.5＋0.025(10DP)
0(10DP)

15.5135, 8DP＋0.012

105

Unit：mm※517.51017.5(2×(4)Φ9)

2059.5

Output table

75(4)Φ9 THRU

40
10135±0.03(4)M8×1.25, 16DP110

Motor bracket

22.5

Attachment code ※5 Dimensions
A□B□D□

52.585□95C□
E□

10※1 For detailed dimensions, refer to the standard specifications onour website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for Standard Gear Ratio Models on the following page.
※4 Use the product code to specify the position of the access hole inthe motor bracket. (Refer to P.4)

55
59
62

F□

59

G□

62

RU63

High Gear Ratio Model Dimension Drawings〔Gear ratio=60〕

Unit：mm
225
155
135

125
120

φ5 ＋0.012, 8DP0105

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)
0＋0.025※3132.5

63
26.25±0.05

140±0.03

180200φ7052.5

99.60

φ40 −0.025

φ153

φ3352.5±0.1

φ32.5 030°°
60
5×2.5

φ55(6)M6×1, 12DP

15.5(10DP)

φ32.5 ＋0.025(10DP)
015.5

1077.567.5±0.1(4)M8×1.25, 16DP

40
10Gear box

10022.5

52.5

85

2.5

※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for High Gear Ratio Models on the following page.
※4 The access hole for the gear box is located on side S. (Refer to P.4)

110

1275
135±0.03(4)Φ9 THRU

1017.51017.5(2×(4)Φ9)

20

59.5

Output table

9※3

RU63 Dimensions
RU63Attachment Code Selection Chart Standard Gear Ratio Models [Gear ratio=20] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhAttachment
codeaA□φ10 -0.009

B□eC□dφcφbφagb00
φ14 -0.011

0D□

φ16 -0.011

E□0φ19 -0.013

F□G□cd32〜34

Less than
20.2

36〜38

Less than
6φ70
φ80

0

φ16 -0.011

φ70f

Less than Less than
516.2
φ80
Less than
φ65eLess than
23.2
Less than
4Less than Less than
620.2
Less than Less than4
23.2

40〜41gMax motor
torqueh(4)M6×1, 8DP

10090(4)M6×1, 12DP(4)M6×1, 15DP

36〜38

100 (4)M6×1, 12DP

40〜41

90 (4)M6×1, 15DP

16.66N・m※1 The most common servomotors suitable for these models are given on page 18.

Motor mounting dimensions on the RU

Mountable Motor Dimensions

RU63

Attachment Code Selection Chart High Gear Ratio Models [Gear ratio=60] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhed

Attachment
codeaAS0
φ9 -0.009

BS

φ14 -0.011

0cdef-

φ50

Less than4-

25〜31gφc
φb
φaMountable Motor Dimensions

10h70 (4)M5×0.8, 10DP※1 The most common servomotors suitable for these models are given on page 18.

gMotor mounting dimensions on the RUbMax motor
torque6.85N・mRU80 Dimensions
RU80

Standard Gear Ratio Model Dimension Drawings〔Gear ratio=20〕
φ5 ＋0.012, 8DP
0160
155

φ50 ＋0.025(15DP)
022.5°
65±0.1235

185±0.0380

255

φ900φ188

φ60 −0.03

φ50.5

φ75

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)0※375
37.5±0.05

φ50 ＋0.025(15DP)
018

1095
85±0.1(8)M6×1, 12DP°
457×2.5※5170

14018

Unit：mm190※320(2×(4)Φ9)

20102080

Output table

100(4)Φ9 THRU

45

170±0.03

10140(4)M8×1.25, 16DP

Motor bracket※5※6Attachment code Dimensions
Dimensions

A□

25B□
C□
D□

68

□9572

F□G□

70

※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for Standard Gear Ratio Models on the following page.
※4 Use the product code to specify the position of the access hole inthe motor bracket. (Refer to P.4)

※6120E□64.5

90□13510H□
J□

68K□

72

□95

RU80

High Gear Ratio Model Dimension Drawings〔Gear ratio=60〕

Unit：mm280
φ5 0＋0.012

160, 8DP

190

155＋0.025

100(4)Φ9 THRU

1025

Gear box

2.570

120

13514010※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for High Gear Ratio Models on the following page.
※4 The access hole for the gear box is located on side S. (Refer to P.4)45170±0.03(4)M8×1.25, 16DP

12.51020（2×4×φ9）

2080

182.5

136.1

80

75
37.5±0.05

185±0.03

235

255

φ90

φ188

65±0.1

φ50 00φ60 −0.03°

φ50.5※322.5°

Output table

20, 8DP (V and W surfaces)＋0.012(15DP)

φ50 ＋0.025(15DP)
02×(2)Φ5 085±0.1

45
7×2.5

φ7595(8)M6×1, 12DP
181810170

14011※3

RU80 Dimensions
RU80

Attachment Code Selection Chart Standard Gear Ratio Models [Gear ratio=20] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhAttachment
codeaA□φ10 -0.009

B□eC□

dD□
E□
φc
φbφag

F□
G□
H□

Motor mounting dimensions on the RU

Mountable Motor Dimensions

J□K□

bc00
φ14 -0.011dLess than Less than
516.7
Less than
φ65

φ800

Less than
60

Less than5

φ16 -0.011

0φ24 -0.0130

f

Less than 36.5〜37.5
20.2
40〜41.5

Less than Less thanLess than
φ110732.3
φ7555〜59.5

φ70

g32〜34

Less than24.2

φ19 -0.013
φ22 -0.013

eMax motortorqueh(4)M6×1, 9DP100(4)M6×1, 13DP 16.66N・m(4)M6×1, 17DP

90 (4)M6×1, 12DP

145 (4)M8×1.25, 15DP 53.33N・m

φ24 -0.0210
φ16 -0.0110

Less than
φ65

φ80
φ70

Less than Less than
36.5〜37.5 100 (4)M6×1, 13DP
620.2
16.66N・mLess than Less than
40〜41.5
90 (4)M6×1, 12DP524.2※1 The most common servomotors suitable for these models are given on pages 19 to 20.

RU80

Attachment Code Selection Chart High Gear Ratio Models [Gear ratio=60] With Attachment
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Attachment
codeaAS0
φ10 -0.009

eBS

φ14 -0.011

dCS

φ16 -0.011

DS

φ19 -0.013

ES

φ14 -0.011

FS0
φ16 -0.011

Unit：mm

fhφc
φb
φag

Motor mounting dimensions on the RU

b0000cdef

φ80Less than
φ65h(4)M6×1, 12DP 13.59N・m30〜50.590※1 The most common servomotors suitable for these models are given on page 20.

Mountable Motor Dimensions

12Max motor
torque100Less than Less than712.5

φ70gRU100 Dimensions
RU100

Standard Gear Ratio Model Dimension Drawings〔Gear ratio=20〕
165

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)0

φ70 ＋0.03(15DP)
0102.5±0.1

22.5°
85±0.1※350±0.05

100270295

235±0.03

100

φ228

0

φ120

φ80 −0.03

φ70.5°
45
7×

φ70 ＋0.03(15DP)
012.5
115

235φ100

Unit：mm90205(8)M8×1.25, 16DP

145
23230

φ5 ＋0.012, 8DP0160※312.52525(2×(4)Φ11)

2580

Output table

52.5

125

175

Motor bracket

27.5

1572.5115□135(4)M10×1.5, 20DP

※1 For detailed dimensions, refer to the standard specifications onour website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for Standard Gear Ratio Models on the following page.
※4 Use the product code to specify the position of the access hole inthe motor bracket. (Refer to P.4)

12.5

205±0.03(4)Φ11 THRU

RU100High Gear Ratio Model Dimension Drawings〔Gear ratio=60〕

Unit：mm335165
145205(8)M8×1.25, 16DP

23102.5±0.1※3100146.1

205

50±0.05

100270235±0.03

295

φ228

φ1200

φ70.5

φ80 −0.03

85±0.1

φ70 0＋0.03

22.5°°

φ100

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)
045
7×

512.5
115(15DP)

φ70 ＋0.03(15DP)
023230

φ5 ＋0.012, 8DP0160※1,※5125
205±0.03(4)Φ11 THRU

12.52512.525(2×(4)Φ11)

2580

Output table※352.512.5※1,※5 Motor mounting ﬂangeGear box

72.5

2.5

14011515※1 For detailed dimensions, refer to the standard specifications onour website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for High Gear Ratio Models on the following page.
※4 The access hole for the gear box is located on side S. (Refer to P.4)
※5 If the attachment code is DS, ES, or FS, the gear box will have amotor mounting flange.

27.5※1,※5175(4)M10×1.5, 20DP13RU100 Dimensions
Attachment Code Selection Chart Standard Gear Ratio Models [Gear ratio=20] With Attachment RU100
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhe

Attachment
codeaB□

φ19 -0.013

C□

φ22 -0.013

bD□de

f

gh

Max motor
torque000dc

φ24 -0.013

Less than φ110 Less than Less than
φ90
733.3

55〜60

145 (4)M8×1.25, 15DP 53.33N・m0

φ24 -0.021※1 The most common servomotors suitable for these models are given on page 21.
φcφbφag

Motor mounting dimensions on the RU

Mountable Motor Dimensions

Attachment Code Selection Chart High Gear Ratio Models [Gear ratio=60] With Attachment

RU100

Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhedg

Attachment
code

a

AS0
φ10 -0.009

BS

φ14 -0.011

CS0φ16 -0.011

DS

φ19 -0.013

ES

φ22 -0.01３

b00φc
φb
φad

φ80

Less than
9.5-

φ24 -0.0２1

ef30〜50ghφ110

Less than729.81N・m50〜60

145 (4)M8×1.25, 16DP0

φ24 -0.01３※1 The most common servomotors suitable for these models are given on pages 22 to 23.
※2 If the attachment code is DS, ES, or FS, the gear box will have a motor mounting ﬂange.
For detailed dimensions, refer to the standard speciﬁcations on our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html
Motor mounting dimensions on the RU

Mountable Motor Dimensions

14Max motor
torque100 (4)M6×1, 12DP

-00FScRU125 Dimensions
RU125

Standard Gear Ratio Model Dimension Drawings〔Gear ratio=20〕
21028＋0.012, 8DP (V and W surfaces)7×45

100±0.1°125※362.5±0.05

125340290±0.03

370

φ2780

φ100−0.035

φ90.52×(2)Φ5 0125±0.1

22.5°

φ150＋0.035

φ90 05

φ125140(8)M10×1.5, 20DP
φ90 ＋0.035(20DP)
0(20DP)

28

15

250

φ5 ＋0.012, 8DP0190

Unit：mm※5280215※3301530(2×(4)Φ14)

30105

Output table

160(4)Φ14 THRU

60

250±0.03(4)M12×1.75, 24DP

15210

Motor bracket

35B□95※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for Standard Gear Ratio Models on the following page.
※4 Use the product code to specify the position of the access hole inthe motor bracket. (Refer to P.4)

※5

※698

□135120□180A□※6160

Attachment codeC□D□

15E□

RU125

High Gear Ratio Model Dimension Drawings〔Gear ratio=60〕

Unit：mm390
280215φ5 0＋0.012190※37×100±0.1

45°125193.112562.5±0.05

290±0.03340

370

φ278

φ150

2×(2)Φ5 ＋0.012, 8DP (V and W surfaces)
0125±0.122.5°

0φ100−0.035

φ90.5

φ125515140(8)M10×1.5, 20DP

28
φ90 ＋0.035(20DP)0

φ90 ＋0.035(20DP)
028

250, 8DP160(4)Φ14 THRU

1535

Gear box

95160

1852102.515※1 For detailed dimensions, refer to the standard specifications on
our website.
http://www.sankyo-seisakusho.co.jp/download/size/index.html※2 Customer to provide servomotor.
※3 These dimensions can be found in the Attachment Code Selection
Chart for High Gear Ratio Models on the following page.
※4 The access hole for the gear box is located on side S. (Refer to P.4)60

250±0.03(4)M12×1.75, 24DP

12.5301530(2×(4)Φ14)

30105

Output table

260

21015※3

RU125 Dimensions
Attachment Code Selection Chart Standard Gear Ratio Models [Gear ratio=20] With Attachment RU125
Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhe

Attachment
codeaA□φ19 -0.013

B□

φ22 -0.013

bC□gφcφbφaD□E□dghMax motortorqueefLess than
31.3

55〜61

145 (4)M8×1.25, 20DP 53.33N・mLess than
47.8

79〜83

200 (4)M12×1.75, 20DP

000dc

φ24 -0.013

Less than φ110
φ90
Less than70

φ24 -0.021
φ35+0.01000

φ35 -0.016
φ35

Less thanφ100 φ114.3+0.010086.66N・m
133.33N・m※1 The most common servomotors suitable for these models are given on pages 23 to 24.

Motor mounting dimensions on the RU

Mountable Motor Dimensions

Attachment Code Selection Chart High Gear Ratio Models [Gear ratio=60] With Attachment

RU125Check the dimensions for a to h in the diagram below, and choose the proper attachment code.
Unit：mmfhed

Attachment
codeaAS0
φ19 -0.013

BSφ22 -0.013

CS0φ24 -0.013

0-cd

φ110 Less than
6.5

ef-50〜65.5

ghφcφbφa
Mountable Motor Dimensions

16Max motor
torque145 (4)M8×1.25, 16DP 45.28N・m※1 The most common servomotors suitable for these models are given on pages 24 to 25.

g

Motor mounting dimensions on the RUb