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Flexible Couplings - Bellows type, MFB/MFBS series.

Volume Discount

NBK

Flexible bellows type couplings, MFB/MFBS series. The MFB series is aluminum and the MFBS series is stainless steel. Zero Backlash.

Part Number

Configured Part Number is shown.

: 30; 45; 60

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Part Number
MFB-12-3-3
MFB-12-3-4
MFB-12-3-5
MFB-12-3-6
MFB-12-3-6.35-BT
MFB-12-4-4
MFB-12-4-5
MFB-12-4-6
MFB-12-4-6.35-BT
MFB-12-5-5
MFB-12-5-6
MFB-12-5-6.35-BT
MFB-12-6-6
MFB-12-6-6.35-BT
MFB-12-6.35-BT-6.35-BT
MFB-12C-4-4
MFB-12C-4-5
MFB-12C-5-5
MFB-16-4-4
MFB-16-4-5
MFB-16-4-6
MFB-16-4-7-BT
MFB-16-4-8
MFB-16-5-5
MFB-16-5-6
MFB-16-5-7-BT
MFB-16-5-8
MFB-16-6-6
MFB-16-6-7-BT
MFB-16-6-8
MFB-16-7-BT-7-BT
MFB-16-7-BT-8
MFB-16-8-8
MFB-16C-5-5
MFB-16C-5-6
MFB-16C-5-6.35-BT
MFB-16C-6-6
MFB-16C-6-6.35-BT
MFB-16C-6.35-BT-6.35-BT
MFB-20-5-5
MFB-20-5-6
MFB-20-5-7-BT
MFB-20-5-8
MFB-20-5-9-BT
MFB-20-5-9-BT-KT
MFB-20-5-10
MFB-20-5-10-KT
MFB-20-6-6
MFB-20-6-7-BT
MFB-20-6-8
MFB-20-6-9-BT
MFB-20-6-9-BT-KT
MFB-20-6-10
MFB-20-6-10-KT
MFB-20-7-BT-7-BT
MFB-20-7-BT-8
MFB-20-7-BT-9-BT
MFB-20-7-BT-9-BT-KT
MFB-20-7-BT-10
MFB-20-7-BT-10-KT

Minimum order quantity	Volume Discount	Days to Ship	RoHS	Allowable Torque Range (N•m)	For Shaft Size D1 (mm)	For Shaft Size D2 (mm)	O.D. (Ø)	Full Length (mm)	Body Material	Normal Torque (N•m)	Max. Rotational Speed (r/min)	Allowable Angular Misalignment (deg)	Allowable Lateral Misalignment (mm)	Bellows Part Material	Allowable Axial Misalignment (mm)	Moment of Inertia (kg･m²)	Construction	Additional Work	Keyway
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	3	3	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	3	4	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	3	5	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	3	6	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	3	6.35	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	4	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	5	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	6	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	6.35	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	5	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6.35	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	6	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	6.35	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6.35	6.35	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.0×10^-8	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	4	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.7×10^-8	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	5	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.7×10^-8	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	5	12	23.5	[Aluminum] A2017	0.3	52000	1.5	0.1	C5191	+0.4/-1.2	9.7×10^-8	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	4	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	5	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	6	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	7	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	4	8	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	5	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	7	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	8	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	8 Days or more	10	0.05~1.00	6	6	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	7	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	8	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	7	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	8	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	8 Days or more	10	0.05~1.00	8	8	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.5×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	5	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6.35	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	6	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	6.35	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6.35	6.35	16	26.5	[Aluminum] A2017	0.5	39000	1.5	0.1	C5191	+0.4/-1.2	3.7×10^-7	Clamping Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	5	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	6	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	7	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	8	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	D2 Hole
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	5	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	D2 Hole
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	6	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	7	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	8	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	D2 Hole
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	6	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Standard Shaft Bore	D2 Hole
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	7	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	8	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	9	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	D2 Hole
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	No
1 Piece(s)	Available	11 Days or more	10	0.05~1.00	7	10	20	33	[Aluminum] A2017	0.8	31000	2	0.15	C5191	+0.6/-1.8	9.9×10^-7	Set Screw Type	Additional Work Shaft Hole	D2 Hole

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Basic Information

Type	Bellows Type	Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Application	Stepping Motor
Maximum Range of Rotation Number(r/min)	10001~78000	Feature	Backlash 0	Category	Coupling body
Allowable Lateral Misalignment Range(mm)	0.02~0.2

Configure

882 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

Allowable Torque Range(N•m)
0.05~1.00

1.01~3.00
Clear
For Shaft Size D1(mm)
3

4

5

6

6.35

7

8

9

10

11

12

13

14

15

16
Clear
For Shaft Size D2(mm)
3

4

5

6

6.35

7

8

9

10

11

12

13

14

15

16
Clear
O.D.(Ø)
12

16

20

25

32
Clear
Full Length(mm)
23.5

26.5

33

36.5

42
Clear
Body Material
- Stainless Steel
  - 303 Stainless Steel
- Aluminum
  - A2017
Clear
Normal Torque(N•m)
0.3

0.5

0.8

1

1.3

1.5

2

3
Clear
Max. Rotational Speed(r/min)
19000

25000

31000

39000

52000
Clear
Allowable Angular Misalignment(deg)
1.5

2
Clear
Allowable Lateral Misalignment(mm)
0.1

0.15

0.2
Clear
Bellows Part Material
- Stainless Steel
  - 316L Stainless Steel
- C5191
Clear
Construction
- Clamping Type
- Set Screw Type
Clear
Additional Work
- Additional Work Shaft Hole
- Standard Shaft Bore
Clear
Keyway
- D1 Hole
- D2 Hole
- Both Sides
- No
Clear
type
- MFB
- MFBS
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

8 Days or Less

11 Days or Less

16 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, MFB/MFBS series.

Basic Information

Configure

Specification/Dimensions

Allowable Torque Range(N•m)

For Shaft Size D1(mm)

For Shaft Size D2(mm)

O.D.(Ø)

Full Length(mm)

Body Material

Normal Torque(N•m)

Max. Rotational Speed(r/min)

Allowable Angular Misalignment(deg)

Allowable Lateral Misalignment(mm)

Bellows Part Material

Construction

Additional Work

Keyway

type

CAD