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Flexible Couplings - Bellows type, miniature, zero backlash, MK2 series. (Part Numbers)

R+W

Features
Low restoring forces on coupled shafts
Easy installation
Light weight and low moment of inertia

Design
Two clamping hubs concentrically mounted to flexible bellows.

Material
Bellows: high grade stainless steel
Hubs: aluminum

Advantage
Precise and well-balanced transmission with zero backlash

Part Number

Configured Part Number is shown.

Product Specifications
Part Numbers

: 30; 60; 90

Part Number
MK2/5/25/MPB/MPB
MK2/5/28/MPB/MPB
MK2/5/31/MPB/MPB
MK2/10/27/MPB/MPB
MK2/10/30/MPB/MPB
MK2/10/33/MPB/MPB
MK2/15/30/MPB/MPB
MK2/15/35/MPB/MPB
MK2/20/35/MPB/MPB
MK2/20/40/MPB/MPB
MK2/20/44/MPB/MPB
MK2/45/46/MPB/MPB
MK2/45/54/MPB/MPB
MK2/100/50/MPB/MPB
MK2/100/60/MPB/MPB

Minimum order quantity	Days to Ship	Allowable Torque Range (N•m)	For Shaft Size D1 (mm)	For Shaft Size D2 (mm)	Outer Dia. A (Ø)	Overall Length W (mm)	Feature	Allowable Torque (N•m)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment Range (mm)	Allowable Lateral Misalignment (mm)	Moment of Inertia (kg･m²)	Fit Length (in) (in)	Torsional Stiffness (N-m/rad) (N-m/rad)	Tightening Torque of the Fastening Screw (N-m) (N-m)	Size
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	25	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	0.5	1	0.02~0.2	0.15	0.00000026	9	280	0.43	5
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	28	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	0.5	1.5	0.02~0.2	0.2	0.00000028	9	210	0.43	5
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	31	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	0.5	2	0.21~0.40	0.25	0.0000003	9	170	0.43	5
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	27	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	1	1	0.02~0.2	0.15	0.0000006	9	510	0.43	10
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	30	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	1	1.5	0.02~0.2	0.2	0.00000034	9	380	0.43	10
1 Piece(s)	5 Days	0.05~1.00	0-Pilot Bore	0-Pilot Bore	15	33	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	1	2	0.21~0.40	0.25	0.00000036	9	320	0.43	10
1 Piece(s)	5 Days	1.01~3.00	0-Pilot Bore	0-Pilot Bore	19	30	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	1.5	1.5	0.02~0.2	0.15	0.00000085	11	750	0.85	15
1 Piece(s)	5 Days	1.01~3.00	0-Pilot Bore	0-Pilot Bore	19	35	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	1.5	1.5	0.02~0.2	0.2	0.00000095	11	700	0.85	15
1 Piece(s)	5 Days	1.01~3.00	0-Pilot Bore	0-Pilot Bore	25	35	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	2	1.5	0.02~0.2	0.15	0.000025	13	1200	2.3	20
1 Piece(s)	5 Days	1.01~3.00	0-Pilot Bore	0-Pilot Bore	25	40	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	2	1.5	0.02~0.2	0.2	0.000027	13	1300	2.3	20
1 Piece(s)	5 Days	1.01~3.00	0-Pilot Bore	0-Pilot Bore	25	44	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	2	1.5	0.02~0.2	0.2	0.000029	13	1200	2.3	20
1 Piece(s)	5 Days	3.01~5.00	0-Pilot Bore	0-Pilot Bore	32	46	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	4.5	2	0.21~0.40	0.3	0.00001	16	7000	4	45
1 Piece(s)	5 Days	3.01~5.00	0-Pilot Bore	0-Pilot Bore	32	54	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	4.5	2	0.21~0.40	0.25	0.0000108	16	5000	4	45
1 Piece(s)	8 Days	5.01~10.00	0-Pilot Bore	0-Pilot Bore	40	50	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	10	1.5	0.02~0.2	0.2	0.000016	16	9050	4.5	100
1 Piece(s)	5 Days	5.01~10.00	0-Pilot Bore	0-Pilot Bore	40	60	No Backlash / Low Moment of Inertia / Unfinished Shaft Bore	10	2	0.21~0.40	0.3	0.0000205	16	8800	4.5	100

Basic Information

Type	Bellows Type	Max. Rotational Speed Range(r/min)	4001~10000	Body Material	Aluminum
Max. Rotational Speed(r/min)	10,000	Bellows Part Material	Stainless Steel	Operating Temperature Range(℃)	-30::100

Configure

15 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Allowable Torque Range(N•m)
0.05~1.00

1.01~3.00

3.01~5.00

5.01~10.00
Clear
For Shaft Size D1(mm)
0-Pilot Bore

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24
Clear
Outer Dia. A(Ø)
15

19

25

32

40
Clear
Overall Length W(mm)
25

27

28

30

31

33

35

40

44

46

50

54

60
Clear
Feature
No Backlash

Low Moment of Inertia

Unfinished Shaft Bore
Clear
Allowable Torque(N•m)
0.5

1

1.5

2

4.5

10
Clear
Allowable Angular Misalignment(deg)
1

1.5

2
Clear
Allowable Lateral Misalignment Range(mm)
0.02~0.2

0.21~0.40
Clear
Allowable Lateral Misalignment(mm)
0.15

0.2

0.25

0.3
Clear
Fit Length (in)(in)
- 9
- 11
- 13
- 16
Clear
Torsional Stiffness (N-m/rad)(N-m/rad)
170

210

280

320

380

510

700

750

1200

1300

5000

7000

8800

9050
Clear
Tightening Torque of the Fastening Screw (N-m)(N-m)
0.43

0.85

2.3

4

4.5
Clear
Size
5

10

15

20

45

100
Clear
For Shaft Size D2(mm)
0-Pilot Bore

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24
Clear
CAD
- 3D
Clear

Days to Ship

All

5 Days or Less

8 Days or Less

21 Days or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

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Flexible Couplings - Bellows type, miniature, zero backlash, MK2 series. (Part Numbers)

Basic Information

Configure

Specification/Dimensions

Allowable Torque Range(N•m)

For Shaft Size D1(mm)

Outer Dia. A(Ø)

Overall Length W(mm)

Feature

Allowable Torque(N•m)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment Range(mm)

Allowable Lateral Misalignment(mm)

Fit Length (in)(in)

Torsional Stiffness (N-m/rad)(N-m/rad)

Tightening Torque of the Fastening Screw (N-m)(N-m)

Size

For Shaft Size D2(mm)

CAD