RollerDrive

RollerDrive specifications®

MR series

Grease lubrication type
ModelMR20MR25MR32

1012122.7

5.2

10.0

Gear ratio

N･mUpper limit torque at start/stop

min−1

2,000

min−1

1,500

arc･sec or less

±15μm or less

50＊

Max. input speed＊Rated input speed

Angular repeatability accuracy
Surface runout

1.0kg

Weight（Motor not included）

2.1

1.3

＊ If you want to rotate the output continuously for 360 °or more, please contact us in advance.

How to determine the allowable load mass and allowable moment
Check the allowable load mass and allowable moment as follows.
1. Find the average load torque based on the rated output speed (rpm) and load conditions.
（The maximum load torque should never exceed the starting/stopping upper limit torque）
2. Find the allowable values for the average load torque and rated output speed by looking at the dynamic rated output torque diagram below.
3. Find each maximum allowable value by referring to the allowable load mass diagram, the allowable moment diagram and the average load torque.

MR20 dynamic rated output torque diagram

MR20 allowable load mass diagram

MR20 allowable moment diagram

5.0
Expected service life time
26,000[h]Expected service life time
12,000[h]

2.0

1.0

0.0
0.0

50100

1.0
E p
Expected
service life
i time26,000[h]20Expected service life
Ei time12,000[h]12000[h]
04.0＋

3.0
2.0
1.0
0.0
0.0

150

Rated output speed[min−1]

MR25 dynamic rated output torque diagram

1.0

2.0

Allowable moment[N・m]3.0

Allowable load mass[kg]Dynamic rated output torque[N・m]Gear ratio=10
Expected service lilife
Ei time26,000[h]20Expected service lifeE
i time12,000[h]112000[h]
000
0

0.8

0.5

0.3

0.0
0.0

3.0

0.5

Dynamic rated output torque[N・m]

1.0

1.5

2.0

2.5

3.0

Dynamic rated output torque[N・m]MR25 allowable moment diagram

MR25 allowable load mass diagram

Expected service life time
12,000[h]

4.0
3.0
2.0
1.0
0.0
0.0

50

100

10.0

2.5

Expected service life time
12,000[h]

8.0
6.0
4.0
2.0
0.0
0.0

50

100

150

Rated output speed[min−1]

2.0

1.0

3.0MR32 allowable moment diagram
4.0

Expected service life time
26,000[h]Expected service life time
12,000[h]

10.0＋

5.0

0.0
0.0

5.0

10.0

Dynamic rated output torque[N・m]46.0

Dynamic rated output torque[N・m]15.0
Expected service life time
26,000[h]Expected service life time
12,000[h]

0.0
0.0

5.0

MR32 allowable load mass diagram

Gear ratio=1210.0

Expected service life time
26,000[h]3.0Dynamic rated output torque[N・m]Allowable load mass[kg]Dynamic rated output torque[N・m]12.0＋

5.0Rated output speed[min−1]

MR32 dynamic rated output torque diagram

Expected service life time
12,000[h]

7.5

0.0
0.0

150

4.0

Expected service life time
26,000[h]Allowable moment[N・m]Expected service life time
26,000[h]5.0Allowable moment[N・m]6.0

Allowable load mass[kg]Dynamic rated output torque[N・m]Gear ratio=12

Expected service life time
26,000[h]Expected service life time
12,000[h]

3.0

2.0

1.0

0.0
0.0

5.0

10.0

Dynamic rated output torque[N・m]MR20 Dimensions
MR20 standard speciﬁcations dimensional drawings (no options)
＊355

（6）
M3×0.5, 6DP

T26.5Ucd812T

φ14＊32060ab＊3

24＊30
φ8 -0.015

70.5

φ20U

5.5

φ4.5

27.5
SOutput table（0.7）

6.5

φ824

＊3

42

M6×15451
50

Unit：mm

＊3V5W

R（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP
（W surface）＊3（4）
M6×1, 8DP
Motor base930

R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

20＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.

17.5

＊3 Please refer to pages 7 to 9 for dimensions.

MR20 standard speciﬁcations detailed view of the input axis, speciﬁcations without attachments

7.5

80φ9.9 -0.015

φ8 +0.015
046

φ
43

27.5°
（4）
M3×0.5, 6DP

14.5

5

27.5
°

27.5°

46

φ34 +0.025
0°
27.5

257
φ

Unit：mmRollerDrive

MR series®

MR20 s option A speciﬁcation dimension drawings＊355＊3426.5（6）
M3×0.5, 6DP

27.5TU

26.5c12dT

φ14＊3b＊3a24＊30
φ8 -0.015

70.5

φ20U

82060（0.7）

φ4.5

SOutput table

φ824M6×1545150

Unit：mm

＊3V5W

R

（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP
（W surface）＊3（4）
M6×1, 8DP
Motor base

930R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

20＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.

17.5

＊3 Please refer to pages 7 to 9 for dimensions.

MR20 s option B speciﬁcation dimension drawings

Unit：mm64＊3（6）
M3×0.5, 6DP

27.5SOutput table

26.5UTd812T

φ142060＊3ba＊3＊370.5

φ20φ500
φ8 -0.015＊3V5Wc24U

φ39（0.8）

6.5
φ4.5

24

＊3

42

φ8355

5M6×16153

R（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP
（W surface）（4）
M6×1, 8DP
Motor base

930R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.
＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.

20＊3 Please refer to pages 7 to 9 for dimensions.

617.5

＊3

MR20 Dimensions
MR20 Attachment Code Selection Chart With Attachment＊255f

Unit：mmf50

3Ｕ surface

24T surface

a: Insertable motor
shaft diameter

d

□46

□46

24

□4270.5

b: Motor shaft diametersthat can be insertedce［Figure 1］

Motor base［Figure 2］dMotor base＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.
＊2 This ﬁgure shows the standard speciﬁcations (no options).

Attachment
codeaA1φ5bN2N3cde−

31（4）
φ3.4
THRU

φ22N1

φ48

T surface

U surface

Attachment code

Shape of the motor base

Model Code

MR20-10G□TMR20-10G□U□1Figure 1

＊2

4.55

□2 to □5

Figure 2Accessories

26

φ46
N5A1

N1

N2，N3，N4N5Motor base○○○○Clamp collar

○

○

○

○

Motor shaft sleeve○−−−

M3×20 (4)M3×18 (4)

27.5

−
φ30

N4

Attachment codef（4）M3×0.5,6DP

φ45

φ8［mm］

Motor position（4）M4×0.7,8DP

Motor base bolt
23.5

M3×10 (4)Clamp collar bolts

M3×12 (2)Motor installation schematic［Figure 1］［Figure 2］

Motor baseMotor base bolts

Motor base bolts
Motor shaft sleeve

Motor shaft sleeve
Clamp collar

Clamp collar
Clamp collar bolts

Clamp collar bolts
Motor baseMotor mounting bolts

Motor mounting bolts＊ If you choose option A or B speciﬁcations, please contact us in advance.

7

RollerDrive

MR25 Dimensions®

MR series

MR25 standard speciﬁcations dimensional drawings (no options)
＊359
56
55

φ4.5ScUTd12T＊323b70a＊327.5＊38425φ28

φ120φ18 -0.018

U8φ831.5Output table

M6×132.5（6）
M3×0.5, 6DPW

φ12＊37.55028（0.7）65

Unit：mm

V7.5

＊3R

（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP
（W surface）（4）
M6×1, 12DP

＊3

Motor base

1330R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

30

17.5

＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.
＊3 Please refer to pages 12 to 14 for dimensions.

MR25 standard speciﬁcations detailed view of the input axis, speciﬁcations without attachments

500
φ9.9 -0.015

8φ8 +0.015
07.5

Unit：mm

φ46°
27.5

27.5

27.5°

50

φ36 +0.025
0°
27.5

257
φ°

（4）
M4×0.7, 7DP
14.5

10

MR25 Dimensions
MR25 s option A speciﬁcation dimension drawings（6）
M3×0.5, 6DP

31.5

TdcU

812T

φ23

＊3

＊3ab27.5＊30
φ18 -0.018

84
2570

φ28U

32.5

SOutput table
（0.7）

＊37.5
φ4.5

286550M6×1＊3φ8595655

Unit：mm

V＊37.5W

R（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP（W surface）＊3（4）
M6×1, 12DP
Motor base

1330

R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

30

17.5

＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.
※3 Please refer to pages 12 to 14 for dimensions.

MR25 s option B speciﬁcation dimension drawings
6550

31.5UTd812T

φ2384
2570

＊3a＊3＊3b27.50
φ18 -0.018

V＊37.5WcU

φ28
φ60

φ48（0.5）

32.5

SOutput table

M6×1（6）
M3×0.5, 6DP

28

＊3
7.5
φ4.5

3＊35

φ8696658

Unit：mmR（3）
φ4.5 THRU, C-BORE φ8, 8DP（V surface）（3）
M6×1, 12DP
（W surface）（4）
M6×1, 12DP
Motor base

1330

R

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

30＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.
※3 Please refer to pages 12 to 14 for dimensions.

1117.5＊3

RollerDrive®

MR series

MR25 Attachment Code Selection Chart With Attachment
65＊2Unit：mmff55
28

3Ｕ surface
T surfacea: Insertable motor
shaft diameterd

□50

□50

27.5

□4284

b: Motor shaft diametersthat can be inserted

ce［Figure 1］

A1
C6a
φ5
φ6.35bc

φ22φ36−

N3Attachment code

Shape of the motor base

Model Code

MR25-12G□T

MR25-12G□U□1Figure 1※2

3.55□2 to □6

Figure 2

31

φ48

−
φ30N4Attachment code

fAccessories

φ46N5A1

N1

N2，N3，N4N5C6Motor base

○○

○

○

○

Clamp collar

○○

○

○

○

Motor shaft sleeve

○−−−

○

Motor base bolt

M4×10 (4)26（4）M3×0.5,6DP

φ45

φ8U surfacee

φ22
N2T surface

（4）
φ3.4
THRU
（4）M4×0.7,8DP
（4）
φ3.4
THRU

31

N1d

Motor positiond41

Motor base［mm］

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.
＊2 This ﬁgure shows the standard speciﬁcations (no options).

Attachment
code［Figure 2］

Motor base

M4×20 (4) M4×18 (4) M4×20 (4)27.5（4）M4×0.7,8DP

Clamp collar bolts

M3×12 (2)23.5

Motor installation schematic［Figure 1］［Figure 2］

Motor baseMotor base bolts

Motor base bolts
Motor shaft sleeve

Motor shaft sleeve
Clamp collar

Clamp collar
Clamp collar bolts

Clamp collar bolts
Motor baseMotor mounting bolts

Motor mounting bolts＊ If you choose option A or B speciﬁcations, please contact us in advance.

12MR32 Dimensions
MR32 standard speciﬁcations dimensional drawings (no options)
76＊360838（6）M4×0.7, 8DP

32.5

S

Output table

W16dT＊3b86a＊3

＊3

102.5

31.5

31φ38

φ170
φ23 -0.013

φ17cU37U8

φ9.5

T（0.5）

M8×1.25＊3

φ5.5716766

Unit：mm

934V

R

（3）
φ5.5 THRU, C-BORE φ9.5, 8DP（V surface）（3）
M8×1.25, 16DP（W surface）（4）
M6×1, 10DP＊3

＊3Motor base

12.540R40＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

18＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.
＊3 Please refer to pages 17 to 19 for dimensions.

MR32 standard speciﬁcations detailed view of the input axis, speciﬁcations without attachments

6215（4）
M5×0.8, 6DP
27.5

1545°

45°

620
φ56 -0.03

φ4945°

45°0
φ16 -0.02

70
φ2φ80

16

φ14 +0.018
06.5

Unit：mmRollerDrive®

MR series

MR32 s option A speciﬁcation dimension drawings（6）
M4×0.7, 8DP
Output table

38S
c37

U

＊3 +2mm
8
φ5.5

32.5

dT

U

816T

φ31102.5
31.5860
φ23 -0.013
φ38（0.5）76
60

M8×1.25＊3φ9.5716766

Unit：mm＊3＊3a＊3bV

349W

R＊3＊3（3）
φ5.5 THRU, C-BORE φ9.5, 8DP（V surface）（3）
M8×1.25, 16DP
（W surface）（4）
M6×1, 10DP
Motor base

12.540R＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.

18

40＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.
＊3 Please refer to pages 17 to 19 for dimensions.

MR32 s option B speciﬁcation dimension drawings
38ScdTU816T

φ31102.5
31.5
86＊3ab＊3＊3φ530φ23-0.013
φ38φ71.537U＊3 +2mm
8M8×1.25（6）
M4×0.7, 8DP

32.5

Output table

（0.5）

7660

φ5.5

2.5

＊37

φ9.5

82.5
78.5
68.5

Unit：mm

V934W

R

（3）
φ5.5 THRU, C-BORE φ9.5, 8DP（V surface）（3）
M8×1.25, 16DP
（W surface）（4）
M6×1, 10DP
Motor base

12.540R＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.
＊2 The relationship of the input/output shaft rotation directions is a-d, b-c.

40

＊3 Please refer to pages 17 to 19 for dimensions.

1618

＊3＊3

MR32 Dimensions
MR32 Attachment Code Selection Chart With Attachment
76＊2f

Unit：mm

f

66
32.5

Ｕ surface
T surfacea：Insertable motor
shaft diameterd

□62

34

□62

102.5

b: Motor shaft diametersthat can be inserted

ce［Figure 1］

Motor base

bac

φ36

B1dT surface

U surface

Attachment code

Shape of the motor base

Model CodeMR32-12G□T

MR32-12G□U□1 to □5

Figure 1

＊2

3.5

6.5

□6 to □7

Figure 2eAttachment codefAccessories

47.14−C2N6N7D6N2，N5

Other All

Motor base

○○

○

○

○

Clamp collar

○○○

○

○

Washer−○○−−Motor shaft sleeve

−−

○−

○41

φ38.1
φ3650

φ38.1

47.14

d

Motor position

φ6.35
B3

Motor base［mm］

＊1 This ﬁgure shows a motor with a T side mounting speciﬁcation.
＊2 This ﬁgure shows the standard speciﬁcations (no options).

Attachment
code［Figure 2］（4）M4×0.7,5.5DP

27.5

φ8C3D4

φ40

φ63

φ50

φ70

φ9D6−

E2

φ10φ36−50F5φ11φ50

φ70−

φ36−

50φ50

φ70−N2N5（4）M5×0.8,5.5DP
（4）
φ5.5
THRU＊
（4）M4×0.7,5.5DP（4）M4×0.7,5.5DP

28.5

Motor base bolt

27.5
31.5

＊M5×10 (4)M5×35 (4)Clamp collar bolts

M6×16 (2)＊ The motor base mounting bolt, M5×35, is a bolt for fastening the motor to the base.
（See motor mounting diagram 2）

27.5
31.5

φ14N6N7（4）
φ5.5
THRU＊

28.5

＊ Refer to motor mounting hole dimensions in the motor mounting diagram [Figure 2].

Motor installation schematic［Figure 1］［Figure 2］
Motor mounting holes：（4）M5×0.8, 6.5DP

Motor base bolts

Motor mounting holes：（4）φ5.5 THRU
Motor shaft sleeve

Motor shaft sleeve
Clamp collar

Clamp collar

Clamp collar bolts

Clamp collar bolts

Motor baseMotor baseWashers

Motor mounting bolts

Motor mounting bolts＊ If you choose option A or B speciﬁcations, please contact us in advance.

17