Spring couplings, Baumannflex / grub screw clamping / spiral spring assembly / body: steel / MM / MIKI PULLEY (Part Numbers - CAD Download)

Three-layer coil structure achieves compact size with high torque.

Part Number

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Part Number
MM-12K 12H-12H
MM-12K-S

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Allowable Torque Range (N•m)	Hole diameter D1 (mm)	Hole diameter D2 (mm)	Outer Diameter (mm)	Overall Length (mm)	Max. Rotational Speed Range (r/min)	Feature	Body Material	Allowable Torque (Nm)	Maximum Rotation Speed (r/min)	Allowable Lateral Misalignment Range (mm)	Allowable Lateral Misalignment (mm)	Allowable Axial Clearance (±) (mm)	Moment of Inertia (kg･m²)	Shaft Hole Specifications	Shaft hole finished	Keyway Standard
	152.03 €	1		18 Days	10	5.01 to 10.00	12	12	26	50	10,001 to 78,000	High torsional rigidity / High Torque	Steel	10	12000	0.21 to 0.40	0.4	0~+1.0	1.43×10^-5	Shaft hole processed products	Keyway + Tap hole	d1, d2: new JIS
	211.99 €	1		6 Days	10	5.01 to 10.00	-	-	26	50	10,001 to 78,000	High torsional rigidity / High Torque / Shaft hole Unfinished	Stainless Steel	10	12000	0.21 to 0.40	0.4	0~+1.0	1.43×10^-5	-	-	-

Type	Bellows Type	Allowable Misalignment	Angular Misalignment / Eccentricity / Axial Misalignment	Application	Standard / Servo Motor / Stepping Motor
Category	Coupling body	Allowable Angular Misalignment(deg)	3	Operating Temperature Range(°C)	-30::100

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Basic Attributes

Allowable Torque Range(N•m)
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

50.01 to 100.00

100～Less than 500
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Hole diameter D1(mm)
4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

22

24

25

28

30

32

35
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Hole diameter D2(mm)
4

5

6

7

8

9

10

11

12

14

15

16

17

18

19

20

22

24

25

28

30

32

35
Clear
Outer Diameter(mm)
16

17

21

26

30

35

38

45

48

55

65

75
Clear
Overall Length(mm)
20

25

35

50

65

80

100

125

150
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Feature
High torsional rigidity

High Torque

Shaft hole Unfinished
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Body Material
Stainless Steel

Steel
Clear
Allowable Torque(Nm)
2.5

5

10

20

40

90

150

220
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Maximum Rotation Speed(r/min)
4500

5000

6000

7000

8000

9000

10000

12000

15000

20000
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Allowable Lateral Misalignment Range(mm)
0.21 to 0.40

0.41 to 1.0

1.1 to 3.0
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Allowable Lateral Misalignment(mm)
0.3

0.4

0.5

0.6

0.7

0.9

1

1.1

1.2
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Shaft Hole Specifications
- Shaft hole processed products
Clear
Shaft hole finished
- Keyway + tap hole (d1 keyway not included)
- Keyway + Tap hole
- Round hole + tap hole included
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Keyway Standard
d1, d2: new JIS

d1, d2: old JIS (2-type)

d1: old JIS (2-type) / d2: new JIS
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Type
- MM
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Max. Rotational Speed Range(r/min)
4,001 to 10,000

10,001 to 78,000
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Filter by CAD data type
- 2D
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