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Bellows Couplings

MBS - Metric Set Screw Bellows Coupling

Metric Set Screw Bellows Coupling

MBS Line Drawing

Features

High torque with low inertia
Balanced for high RPM
Long life with no maintenance
High torsional stiffness
Constant velocity
Zero backlash
Bore tolerance: +.03mm/-.00mm
Maximum speed: 10,000 RPM
Temperature Range: -40°C to 93 °C

How to Specify

Choose any Bore 1 and any Bore 2 available in a body size. Part numbers are in the following format with numbers representing millimeters:

order bc

Material

Aluminum hubs are standard
Stainless steel hubs are available upon request

Inch to Metric Bore Combinations

Inch and metric hubs with the same outside diameter can be combined into a single coupling
For help on inch to metric bore combinations please email

Bellows Couplings

Clamp Style Coupling

Set Screw Coupling

- BS Inch Series

- MBS Metric Series

Coupling Support Form

Click

to expand table | Click part number for 3D CAD file and pricing

Part
Number

Bore 1
B1 (mm)

Bore 2
B2 (mm)

Outer
Diameter
OD (mm)

Length
L (mm)

Hub Width
LH (mm)

Set
Screw

Static
Torque
(Nm)

Torsional
Stiffness
(Nm/Deg)

MISALIGNMENT

Angular (Deg)

Parallel (mm)

Axial Motion (mm)

MBS15

3mm to 6mm

15.0

27.2

8.65

M3

2.5

8

1.5°

0.10

0.20

3

3

15.0

27.2

8.65

M3

2.5

8

1.5°

0.10

0.20

4

3

4

4

5

3

5

4

5

5

6

3

6

4

6

5

6

6

MBS19

4mm to 8mm

19.1

30.2

10.4

M3

4.5

14

1.5°

0.10

0.25

4

4

19.1

30.2

10.4

M3

4.5

14

1.5°

0.10

0.25

5

4

5

5

6

4

6

5

6

6

8

4

8

5

8

6

8

8

MBS25

6mm to 12mm

25.4

33.3

11.85

M4

6.8

27

1.5°

0.10

0.30

6

6

25.4

33.3

11.85

M4

6.8

27

1.5°

0.10

0.30

8

6

8

8

10

6

10

8

10

10

12

6

12

8

12

10

12

12

MBS33

8mm to 16mm

33.3

41.0

15.0

M4

13.6

45

1.5°

0.15

0.40

8

8

33.3

41.0

15.0

M4

13.6

45

1.5°

0.15

0.40

10

8

10

10

12

8

12

10

12

12

14

8

14

10

14

12

14

14

15

8

15

10

15

12

15

14

15

15

16

8

16

10

16

12

16

14

16

15

16

16

MBS41

10mm to 20mm

41.3

50.8

18.05

M5

28.0

63

2°

0.25

0.50

10

10

41.3

50.8

18.05

M5

28.0

63

2°

0.25

0.50

12

10

12

12

14

10

14

12

14

14

15

10

15

12

15

14

15

15

16

10

16

12

16

14

16

15

16

16

20

10

20

12

20

14

20

15

20

16

20

20

MBS51

12mm to 25mm

50.8

58.7

20.55

M6

45.2

108

2°

0.25

0.50

12

12

50.8

58.7

20.55

M6

45.2

108

2°

0.25

0.50

14

12

14

14

15

12

15

14

15

15

16

12

16

14

16

15

16

16

20

12

20

14

20

15

20

16

20

20

25

12

25

14

25

15

25

16

25

20

25

25

Note 1	Static torque ratings are at maximum misalignment. To obtain dynamic rating, static ratings should be divided by 2 for non-reversing applications and by 4 for reversing applications.
Note 2	Hardware is alloy steel with black oxide finish. Parts MBS15 and MBS19 have one set screw on each end. MBS25, MBS33, MBS41 and MBS51 have two set screws 90° apart.
Note 3	Performance ratings are for guidance only. The user must determine suitability for a particular application.
Note 4	Our standard couplings are supplied with black anodized aluminum hubs. Stainless steel hubs are available upon request.
Note 5	Torque ratings for the couplings are based on the physical limitations/failure point of the metal bellows. In some cases, especially when the smallest standard bores are used or where shafts are undersized, slippage on the shaft is possible below the rated torque of the metal bellows. Keyways are available to provide additional torque capacity in the shaft/hub connection when required. Please consult technical support for more assistance.