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

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

Data to be displayed: 30; 45; 60

Part Number
MSTS-50-18-BT-23-BT
MSTS-50-18-BT-24-BT
MSTS-50-18-BT-25-BT
MSTS-50-19-BT-19-BT
MSTS-50-19-BT-20-BT
MSTS-50-19-BT-21-BT
MSTS-50-19-BT-22-BT
MSTS-50-19-BT-23-BT
MSTS-50-19-BT-24-BT
MSTS-50-19-BT-25-BT
MSTS-50-20-BT-20-BT
MSTS-50-20-BT-21-BT
MSTS-50-20-BT-22-BT
MSTS-50-20-BT-23-BT
MSTS-50-20-BT-24-BT
MSTS-50-20-BT-25-BT
MSTS-50-21-BT-21-BT
MSTS-50-21-BT-22-BT
MSTS-50-21-BT-23-BT
MSTS-50-21-BT-24-BT
MSTS-50-21-BT-25-BT
MSTS-50-22-BT-22-BT
MSTS-50-22-BT-23-BT
MSTS-50-22-BT-24-BT
MSTS-50-22-BT-25-BT
MSTS-50-23-BT-23-BT
MSTS-50-23-BT-24-BT
MSTS-50-23-BT-25-BT
MSTS-50-24-BT-24-BT
MSTS-50-24-BT-25-BT
MSTS-50-25-BT-25-BT
MSTS-50C-12-14
MSTS-50C-12-BT-12-BT
MSTS-50C-12-BT-13-BT
MSTS-50C-12-BT-15-BT
MSTS-50C-12-BT-16-BT
MSTS-50C-12-BT-17-BT
MSTS-50C-12-BT-18-BT
MSTS-50C-12-BT-19-BT
MSTS-50C-12-BT-20-BT
MSTS-50C-12-BT-21-BT
MSTS-50C-12-BT-22-BT
MSTS-50C-13-BT-13-BT
MSTS-50C-13-BT-14-BT
MSTS-50C-13-BT-15-BT
MSTS-50C-13-BT-16-BT
MSTS-50C-13-BT-17-BT
MSTS-50C-13-BT-18-BT
MSTS-50C-13-BT-19-BT
MSTS-50C-13-BT-20-BT
MSTS-50C-13-BT-21-BT
MSTS-50C-13-BT-22-BT
MSTS-50C-14-14
MSTS-50C-14-BT-15-BT
MSTS-50C-14-BT-16-BT
MSTS-50C-14-BT-17-BT
MSTS-50C-14-BT-18-BT
MSTS-50C-14-BT-19-BT
MSTS-50C-14-BT-20-BT
MSTS-50C-14-BT-21-BT

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
289.52 €	1	9 Days	10	10.01 to 20.00	18	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	18	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	18	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	19	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	20	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	19	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	20	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	20	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	21	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	21	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	21	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	21	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	21	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	22	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	22	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	22	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	22	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	23	23	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	23	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	23	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	24	24	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	24	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
289.52 €	1	9 Days	10	10.01 to 20.00	25	25	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.7 x 10^-4	Set Screw Type	Additional Work Shaft Hole	NA
374.44 €	1	9 Days	10	10.01 to 20.00	12	14	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Standard Shaft Bore	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	12	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	13	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	15	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	16	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	17	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	18	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	19	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	20	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	12	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	13	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	14	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	15	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	16	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	17	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	18	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	19	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	20	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	13	22	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
374.44 €	1	9 Days	10	10.01 to 20.00	14	14	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Standard Shaft Bore	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	15	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	16	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	17	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	18	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	19	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	20	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	NA
428.05 €	1	9 Days	10	10.01 to 20.00	14	21	50	71	10,001 to 78,000	[Stainless Steel] Stainless Steel (EN 1.4305 Equiv.)	15	12000	0.2	±0.5	2.8×10^-4	Clamping Type	Additional Work Shaft Hole	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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1,047Suggestion of an applicable part number.

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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
Clear
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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