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

Promotional pricing ends 31/12/2024
Volume Discount

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

Once your search is narrowed to one product,
the corresponding part number is displayed here.

Data to be displayed: 30; 45; 60

Part Number
MST-20-6-8
MST-20-6-10
MST-20-6-BT-9-BT
MST-20-6-BT-9.525-BT
MST-20-6.35-8
MST-20-6.35-10-BT
MST-20-6.35-BT-6.35-BT
MST-20-6.35-BT-7-BT
MST-20-6.35-BT-9-BT
MST-20-6.35-BT-9.525-BT
MST-20-7-BT-7-BT
MST-20-7-BT-8-BT
MST-20-7-BT-9-BT
MST-20-7-BT-9.525-BT
MST-20-7-BT-10-BT
MST-20-8-8
MST-20-8-10
MST-20-8-BT-9-BT
MST-20-8-BT-9.525-BT
MST-20-9-BT-9-BT
MST-20-9-BT-9.525-BT
MST-20-9-BT-10-BT
MST-20-10-10
MST-20C-5-6
MST-20C-5-6.35
MST-20C-5-7
MST-20C-5-8
MST-20C-5-BT-5-BT
MST-20C-6-6
MST-20C-6-6.35
MST-20C-6-7
MST-20C-6-8
MST-20C-6.35-8
MST-20C-6.35-BT-6.35-BT
MST-20C-6.35-BT-7-BT
MST-20C-7-BT-7-BT
MST-20C-7-BT-8-BT
MST-20C-8-8
MSTS-8-2-2
MSTS-8-2-3
MSTS-8-2-BT-4-BT
MSTS-8-3-3
MSTS-8-3-BT-4-BT
MSTS-8-4-BT-4-BT
MSTS-12-3-3
MSTS-12-3-4
MSTS-12-3-5-BT
MSTS-12-3-BT-6-BT
MSTS-12-4-4
MSTS-12-4-5
MSTS-12-4-6-BT
MSTS-12-4.5-5
MSTS-12-4.5-BT-6-BT
MSTS-12-5-5
MSTS-12-5-6
MSTS-12-6-BT-6-BT
MSTS-12C-4-4
MSTS-12C-4-5
MSTS-12C-4.5-5
MSTS-12C-5-5

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
43.81 €	1	9 Days	10	0.05 to 1.00	6	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
43.81 €	1	6 Days	10	0.05 to 1.00	6	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6	9	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6	9.525	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
43.81 €	1	9 Days	10	0.05 to 1.00	6.35	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6.35	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6.35	6.35	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6.35	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6.35	9	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	6.35	9.525	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	7	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	7	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	7	9	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	7	9.525	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	7	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
43.81 €	1	6 Days	10	0.05 to 1.00	8	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
43.81 €	1	6 Days	10	0.05 to 1.00	8	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
99.08 €	1	9 Days	10	0.05 to 1.00	8	9	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	8	9.525	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	9	9	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	9	9.525	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
99.08 €	1	9 Days	10	0.05 to 1.00	9	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
43.81 €	1	9 Days	10	0.05 to 1.00	10	10	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.0×10^-7	Set Screw Type	Standard Shaft Bore	NA
63.68 €	1	9 Days	10	0.05 to 1.00	5	6	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.65 €	1	9 Days	10	0.05 to 1.00	5	6.35	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.68 €	1	9 Days	10	0.05 to 1.00	5	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.65 €	1	9 Days	10	0.05 to 1.00	5	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
118.91 €	1	9 Days	10	0.05 to 1.00	5	5	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Additional Work Shaft Hole	NA
63.65 €	1	9 Days	10	0.05 to 1.00	6	6	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.65 €	1	9 Days	10	0.05 to 1.00	6	6.35	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.68 €	1	9 Days	10	0.05 to 1.00	6	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.65 €	1	9 Days	10	0.05 to 1.00	6	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
63.65 €	1	9 Days	10	0.05 to 1.00	6.35	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
118.91 €	1	9 Days	10	0.05 to 1.00	6.35	6.35	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Additional Work Shaft Hole	NA
118.91 €	1	9 Days	10	0.05 to 1.00	6.35	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Additional Work Shaft Hole	NA
118.91 €	1	9 Days	10	0.05 to 1.00	7	7	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Additional Work Shaft Hole	NA
118.91 €	1	9 Days	10	0.05 to 1.00	7	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Additional Work Shaft Hole	NA
63.65 €	1	9 Days	10	0.05 to 1.00	8	8	20	26	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	1	31000	0.1	±0.4	9.1×10^-7	Clamping Type	Standard Shaft Bore	NA
64.75 €	1	9 Days	10	0.05 to 1.00	2	2	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Standard Shaft Bore	NA
64.75 €	1	9 Days	10	0.05 to 1.00	2	3	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Standard Shaft Bore	NA
139.25 €	1	9 Days	10	0.05 to 1.00	2	4	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Additional Work Shaft Hole	NA
64.75 €	1	9 Days	10	0.05 to 1.00	3	3	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Standard Shaft Bore	NA
139.25 €	1	9 Days	10	0.05 to 1.00	3	4	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Additional Work Shaft Hole	NA
139.25 €	1	9 Days	10	0.05 to 1.00	4	4	8	14	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.2	78000	0.1	±0.2	3.1×10^-8	Set Screw Type	Additional Work Shaft Hole	NA
66.84 €	1	9 Days	10	0.05 to 1.00	3	3	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
66.84 €	1	9 Days	10	0.05 to 1.00	3	4	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
141.27 €	1	9 Days	10	0.05 to 1.00	3	5	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
141.27 €	1	9 Days	10	0.05 to 1.00	3	6	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
66.84 €	1	9 Days	10	0.05 to 1.00	4	4	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
66.84 €	1	9 Days	10	0.05 to 1.00	4	5	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
141.27 €	1	9 Days	10	0.05 to 1.00	4	6	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
66.84 €	1	9 Days	10	0.05 to 1.00	4.5	5	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
141.27 €	1	9 Days	10	0.05 to 1.00	4.5	6	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
66.84 €	1	6 Days	10	0.05 to 1.00	5	5	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
66.84 €	1	9 Days	10	0.05 to 1.00	5	6	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Standard Shaft Bore	NA
141.27 €	1	9 Days	10	0.05 to 1.00	6	6	12	18.5	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	0.3	52000	0.1	±0.3	2.1×10^-7	Set Screw Type	Additional Work Shaft Hole	NA
84.78 €	1	9 Days	10	0.05 to 1.00	4	4	12	18.5	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	0.3	52000	0.1	±0.2	2.2×10^-7	Clamping Type	Standard Shaft Bore	NA
84.78 €	1	9 Days	10	0.05 to 1.00	4	5	12	18.5	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	0.3	52000	0.1	±0.2	2.2×10^-7	Clamping Type	Standard Shaft Bore	NA
84.78 €	1	9 Days	10	0.05 to 1.00	4.5	5	12	18.5	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	0.3	52000	0.1	±0.2	2.2×10^-7	Clamping Type	Standard Shaft Bore	NA
84.78 €	1	9 Days	10	0.05 to 1.00	5	5	12	18.5	10,001 to 78,000	[Aluminum] EN AW-2017 Equiv.	0.3	52000	0.1	±0.2	2.2×10^-7	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

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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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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