Helical slit couplings / body: aluminium / MST / NBK (Part Numbers - CAD Download)

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Backlash "0." Design of aluminum alloy slit pattern changed to improve performance.

[Features]
· Metal spring coupling with perfectly integrated structure, with slit in cylindrical material.
Leaf spring formed with a slit allows eccentricity, angle deviation, and end play.
· 2 kinds available: aluminum alloy / all stainless steel type.
· Wide range of outer diameters, ø8 to ø63

Part Number

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the corresponding part number is displayed here.

Data to be displayed: 30; 45; 60

Part Number
MST-25-6.35-BT-6.35-BT
MST-25-6.35-BT-7-BT
MST-25-6.35-BT-9-BT
MST-25-6.35-BT-9.525-BT
MST-25-6.35-BT-11-BT
MST-25-7-BT-7-BT
MST-25-7-BT-8-BT
MST-25-7-BT-9-BT
MST-25-7-BT-9.525-BT
MST-25-7-BT-10-BT
MST-25-7-BT-11-BT
MST-25-7-BT-12-BT
MST-25-8-8
MST-25-8-10
MST-25-8-11-BT
MST-25-8-12
MST-25-8-BT-9-BT
MST-25-8-BT-9.525-BT
MST-25-9-BT-9-BT
MST-25-9-BT-9.525-BT
MST-25-9-BT-10-BT
MST-25-9-BT-11-BT
MST-25-9-BT-12-BT
MST-25-9.525-10
MST-25-9.525-BT-11-BT
MST-25-9.525-BT-12-BT
MST-25-10-10
MST-25-10-12
MST-25-10-BT-11-BT
MST-25-11-BT-11-BT
MST-25-11-BT-12-BT
MST-25-12-12
MST-25C-5-6
MST-25C-5-8-BT
MST-25C-5-BT-5-BT
MST-25C-5-BT-6.35-BT
MST-25C-5-BT-7-BT
MST-25C-5-BT-9-BT
MST-25C-5-BT-9.525-BT
MST-25C-5-BT-10-BT
MST-25C-6-6
MST-25C-6-6.35
MST-25C-6-8
MST-25C-6-10
MST-25C-6-BT-7-BT
MST-25C-6-BT-9-BT
MST-25C-6-BT-9.525-BT
MST-25C-6.35-8
MST-25C-6.35-10
MST-25C-6.35-BT-6.35-BT
MST-25C-6.35-BT-7-BT
MST-25C-6.35-BT-9-BT
MST-25C-6.35-BT-9.525-BT
MST-25C-7-BT-7-BT
MST-25C-7-BT-8-BT
MST-25C-7-BT-9-BT
MST-25C-7-BT-9.525-BT
MST-25C-7-BT-10-BT
MST-25C-8-8
MST-25C-8-9.525

Standard Unit Price	Minimum order quantity	Standard Shipping Days ?	RoHS	Allowable Torque Range (N•m)	Shaft Bore Dia. (machined) D1 (mm)	Shaft Bore Dia. (machined) D2 (mm)	Outer Diameter (mm)	Overall Length (mm)	Maximum Range of Rotation Number (r/min)	Body Material	Normal Torque (Nm)	Max. Rotational Speed (r/min)	Allowable Lateral Misalignment (mm)	Allowable Axial Misalignment (mm)	Moment of Inertia (kg･m²)	Structure	Additional Work	Keyway
105.42 €	1	9 Days	10	1.01 to 3.00	6.35	6.35	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	6.35	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	6.35	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	6.35	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	6.35	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	7	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
50.25 €	1	9 Days	10	1.01 to 3.00	8	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
50.25 €	1	9 Days	10	1.01 to 3.00	8	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
105.42 €	1	9 Days	10	1.01 to 3.00	8	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
50.25 €	1	9 Days	10	1.01 to 3.00	8	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
105.42 €	1	9 Days	10	1.01 to 3.00	8	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	8	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
96.36 €	1	Same day Stock	10	1.01 to 3.00	9	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
50.25 €	1	9 Days	10	1.01 to 3.00	9.525	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9.525	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	9.525	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
50.25 €	1	6 Days	10	1.01 to 3.00	10	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
50.25 €	1	9 Days	10	1.01 to 3.00	10	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
105.42 €	1	9 Days	10	1.01 to 3.00	10	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	11	11	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
105.42 €	1	9 Days	10	1.01 to 3.00	11	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Additional Work Shaft Hole	NA
50.25 €	1	9 Days	10	1.01 to 3.00	12	12	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Set Screw Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	5	6	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
114.08 € 58.18 €	1	Same day Stock	10	1.01 to 3.00	5	5	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	6.35	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	5	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6	6	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6	6.35	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6.35	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	6.35	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6.35	6.35	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6.35	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6.35	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	6.35	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	7	7	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	7	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	7	9	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	7	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
125.65 €	1	9 Days	10	1.01 to 3.00	7	10	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Additional Work Shaft Hole	NA
70.48 €	1	9 Days	10	1.01 to 3.00	8	8	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA
70.48 €	1	9 Days	10	1.01 to 3.00	8	9.525	25	31	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	2	25000	0.15	±0.5	2.6×10^-6	Clamping Type	Standard Shaft Bore	NA

Basic information

Type	Slit type	Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Application	Standard / Stepping Motor
Feature	High torsional rigidity / High Torque / Backlash 0	Category	Coupling body	Allowable Lateral Misalignment Range(mm)	0.02 to 0.2
Allowable Angular Misalignment(deg)	2

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Basic Attributes

Allowable Torque Range(N•m)
0.05 to 1.00

1.01 to 3.00

3.01 to 5.00

5.01 to 10.00

10.01 to 20.00

20.01 to 50.00
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Shaft Bore Dia. (machined) D1(mm)
2

3

4

4.5

5

6

6.35

7

8

9

9.525

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35
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Shaft Bore Dia. (machined) D2(mm)
2

3

4

5

6

6.35

7

8

9

9.525

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35
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Outer Diameter(mm)
8

12

16

20

25

32

40

50

63
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Overall Length(mm)
14

18.5

23

26

31

41

56

71

90
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Maximum Range of Rotation Number(r/min)
4,001 to 10,000

10,001 to 78,000
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Body Material
- Stainless Steel
  - Stainless Steel (EN 1.4305 Equiv.)
- Aluminum
  - EN AW-2017 Equiv.
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Normal Torque(Nm)
0.1

0.2

0.3

0.4

0.5

1

2

3.5

4

8

15

16

32

35
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Max. Rotational Speed(r/min)
10000

12000

15000

19000

25000

31000

39000

52000

78000
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Allowable Lateral Misalignment(mm)
0.1

0.15

0.2
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Structure
- Clamping Type
- Set Screw Type
- Set screw + key type
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Additional Work
- Additional Work Shaft Hole
- Standard Shaft Bore
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Keyway
- Both Sides
- NA
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Type
- MST
- MSTS
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- 2D
- 3D
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