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

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

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Part Number
MM-12K
MM-12K 6-6
MM-12K 6-7
MM-12K 6-8
MM-12K 6-9
MM-12K 6-10
MM-12K 6-11
MM-12K 6-12H
MM-12K 7-7
MM-12K 7-8
MM-12K 7-9
MM-12K 7-10
MM-12K 7-11
MM-12K 7-12H
MM-12K 8-8
MM-12K 8-9
MM-12K 8-10
MM-12K 8-11
MM-12K 8-12H
MM-12K 9-9
MM-12K 9-10
MM-12K 9-11
MM-12K 9-12H
MM-12K 10-10
MM-12K 10-11
MM-12K 10-12H
MM-12K 11-11
MM-12K 11-12H
MM-12K 12H-12H
MM-12K-S
MM-14K
MM-14K 7-7
MM-14K 7-8
MM-14K 7-9
MM-14K 7-10
MM-14K 7-11
MM-14K 7-12H
MM-14K 7-14H
MM-14K 8-8
MM-14K 8-9
MM-14K 8-10
MM-14K 8-11
MM-14K 8-12H
MM-14K 8-14H
MM-14K 9-9
MM-14K 9-10
MM-14K 9-11
MM-14K 9-12H
MM-14K 9-14H
MM-14K 10-11
MM-14K 10-12H
MM-14K 10-14H
MM-14K 11-11
MM-14K 11-12H
MM-14K 11-14H
MM-14K 12H-14H
MM-14K 14H-14H

Standard Unit Price	Minimum order quantity	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
114.60 €	1	9 Days	10	5.01 to 10.00	-	-	26	50	10,001 to 78,000	High torsional rigidity / High Torque / Shaft hole Unfinished	Steel	10	12000	0.21 to 0.40	0.4	0~+1.0	1.43×10^-5	-	-	-
152.03 €	1	18 Days	10	5.01 to 10.00	6	6	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	6	7	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	6	8	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	6	9	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	6 Days	10	5.01 to 10.00	6	10	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	6	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	6	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
152.03 €	1	18 Days	10	5.01 to 10.00	7	7	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	7	8	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	7	9	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	7	10	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	7	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	7	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
152.03 €	1	18 Days	10	5.01 to 10.00	8	8	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	8	9	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	8	10	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	8	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	8	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
152.03 €	1	18 Days	10	5.01 to 10.00	9	9	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	9	10	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	9	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	9	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
152.03 €	1	6 Days	10	5.01 to 10.00	10	10	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	10	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	10	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
152.03 €	1	18 Days	10	5.01 to 10.00	11	11	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	Round hole + tap hole included	d1, d2: old JIS (2-type)
152.03 €	1	18 Days	10	5.01 to 10.00	11	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 keyway not included)	d1: old JIS (2-type) / d2: new JIS
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	-	-	-
121.73 €	1	18 Days	10	5.01 to 10.00	-	-	30	50	4,001 to 10,000	High torsional rigidity / High Torque / Shaft hole Unfinished	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	-	-	-
159.18 €	1	24 Days	10	5.01 to 10.00	7	7	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	7	8	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	7	9	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	7	10	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	7	11	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	7	12	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	7	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	8	8	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	8	9	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	8	10	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	8	11	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	8	12	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	8	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	9	9	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	9	10	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	9	11	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	9	12	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	9	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	10	11	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	10	12	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	10	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	11	11	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Round hole + tap hole included	d1, d2: old JIS (2-type)
159.18 €	1	24 Days	10	5.01 to 10.00	11	12	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	11	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + tap hole (d1 keyway not included)	d1: old JIS (2-type) / d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	12	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + Tap hole	d1, d2: new JIS
159.18 €	1	24 Days	10	5.01 to 10.00	14	14	30	50	4,001 to 10,000	High torsional rigidity / High Torque	Steel	10	10000	0.41 to 1.0	0.5	0~+1.0	2.47×10^-5	Shaft hole processed products	Keyway + Tap hole	d1, d2: new JIS

Basic information

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

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
Clear
Max. Rotational Speed Range(r/min)
4,001 to 10,000

10,001 to 78,000
Clear
Feature
High torsional rigidity

High Torque

Shaft hole Unfinished
Clear
Body Material
Stainless Steel

Steel
Clear
Allowable Torque(Nm)
2.5

5

10

20

40

90

150

220
Clear
Maximum Rotation Speed(r/min)
4500

5000

6000

7000

8000

9000

10000

12000

15000

20000
Clear
Allowable Lateral Misalignment Range(mm)
0.21 to 0.40

0.41 to 1.0

1.1 to 3.0
Clear
Allowable Lateral Misalignment(mm)
0.3

0.4

0.5

0.6

0.7

0.9

1

1.1

1.2
Clear
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
Clear
Keyway Standard
d1, d2: new JIS

d1, d2: old JIS (2-type)

d1: old JIS (2-type) / d2: new JIS
Clear
Type
- MM
Clear
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
Clear
Filter by CAD data type
- 2D
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