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MechaLock MA standard type (MA-8-21)

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Volume Discount

[Features]
· 34 models that have shaft diameters standardized from ø5 to ø85.
· Centering function suppresses outer circumference and terminal surface run-out.
· Loose design of slope angle degrees produces a self-locking effect.
· Hub internal diameter can be used with pass-through machining.
· Wide range of hub options with thin walls and low surface pressure

(i)Caution

Some of the items are scheduled to be discontinued as of end of March in 2023. The manufacturer keep the items produced but they are not available with Misumi.
There are not the replacement items and the plan to resumption of sale. Please check the quotation and order screen for details.

Part Number

Configured Part Number is shown.

MA-8-21

Product Specifications
Part Numbers
Catalog

Drawing

Product Specification

Material / Surface treatment

-	Material	Surface treatment
Inner ring	S45C equivalent	-
Outer ring	S45C equivalent	-
Hex Socket Head Cap Screw	SCM435	Black oxide coating

Specifications Table

Unit: mm

Part number d D	Maximum allowable torque N⋅m	Allowable thrust load kN	Surface Pressure		Moment of inertia kg·m²	Clamping Torque N⋅m	Weight g	Dimensions
Part number d D	Maximum allowable torque N⋅m	Allowable thrust load kN	Shaft N/mm²	Hub N/mm²	Moment of inertia kg·m²	Clamping Torque N⋅m	Weight g	L	L2	L3	L4	A	P·C·D
MA-5-16	7	2.8	249	81	6.27 x 10^-7	1.9	18	16	13	11.2	8	18.5	11.7
MA-6-19	14	4.67	318	102	1.36 × 10^-6	3.9	26	18.3	14.3	12.3	9	21.5	14
MA-6.35-20	14	4.67	301	97	1.66 × 10^-6	3.9	29	18.3	14.3	12.3	9	22.5	14.35
MA-8-21	22	5.6	239	107	2.03 x 10^-6	3.9	35	18.6	14.6	12.6	9.3	23.5	15.4
MA-10-23	25	5.6	186	96	2.92 x 10^-6	3.9	40	18.8	14.8	12.8	9.5	25.5	17.5
MA-11-24	30	5.6	170	92	3.45×10^-6	3.9	45	19.8	15.8	13.8	9.5	26.5	18.4
MA-12-26	50	8.41	233	115	5.37 x 10^-6	3.9	53	22	18	15.5	10.5	28.5	20.2
MA-14-28	65	9.46	225	120	7.07 x 10^-6	3.9	61	22	18	15.5	10.5	30.5	22.2
MA-15-29	70	9.46	186	106	8.58 x 10^-6	3.9	66	23	19	16.5	11.5	31.5	23.2
MA-16-30	75	9.46	166	98	1.02 x 10^-5	3.9	75	23.6	19.6	17.1	12	33	24.2
MA-17-31	110	12.6	197	121	1.17 x 10^-5	3.9	75	24.1	20.1	17.6	12.5	33.5	25.2
MA-18-32	115	12.6	186	118	1.31 x 10^-5	3.9	80	24.1	20.1	17.6	12.5	34.5	26.2
MA-19-33	120	12.6	177	114	1.46 × 10^-5	3.9	81	24.1	20.1	17.6	12.5	35.5	27.2
MA-20-38	220	21.6	234	139	3.70 x 10^-5	8.8	144	29.1	24.1	21.1	15.3	42	30.8
MA-22-40	290	26	256	159	4.42 x 10^-5	8.8	165	29.1	24.1	21.1	15.3	44	32.8
MA-24-42	320	26	217	142	5.45×10^-5	8.8	180	30.1	25.1	22.1	16.3	46	34.8
MA-25-43	350	27.2	216	137	6.15 x 10^-5	8.8	188	31.1	26.1	23.1	17.3	47	35.8
MA-28-46	380	27	192	127	8.15 x 10^-5	8.8	195	31.6	26.6	23.1	17.3	50	38.8
MA-30-48	410	27	179	122	9.45×10^-5	8.8	208	31.6	26.6	23.1	17.3	52	40.8
MA-32-50	440	27	156	110	1.14 x 10^-4	8.8	219	32.6	27.6	24.1	18.3	54	42.8
MA-35-57	720	41.1	204	138	2.12 x 10^-4	15.7	325	36	30	26	19.5	62	48.4
MA-38-60	770	40.2	178	125	2.62 x 10^-4	15.7	362	36.5	30.5	26.5	20	65	51.4
MA-40-62	810	40.2	164	118	3.00 x 10^-4	15.7	380	37	31	27	20.5	67	53.4
MA-42-64	850	40.2	156	114	3.32 x 10^-4	15.7	405	37	31	27	20.5	69	55.4
MA-45-67	1200	52.9	186	140	3.95 x 10^-4	15.7	435	37.5	31.5	27.5	21	72	58.4
MA-48-70	1200	48.2	159	123	4.75×10^-4	15.7	460	38	32	27.5	21	75	61.4
MA-50-72	1500	56.3	173	136	5.35 x 10^-4	15.7	485	38.5	32.5	28	21.5	77	63.4
MA-55-77	1600	56.3	158	127	6.80 x 10^-4	15.7	520	38.5	32.5	28	21.5	83	68.4
MA-60-82	1900	60.3	150	125	8.61×10^-4	15.7	560	39.5	33.5	28.5	22	87	73.4
MA-65-87	2000	60.3	139	118	1.05 x 10^-3	15.7	610	39.5	33.5	28.5	22	92	78.4
MA-70-97	3400	94.8	187	152	1.86 × 10^-3	37.3	845	44.1	36.1	31.1	24	103	86.2
MA-75-102	3900	101.5	187	155	2.22 x 10^-3	37.3	932	44.1	36.1	31.1	24	108	91.2
MA-80-107	4100	101.5	166	142	2.67 x 10^-3	37.3	1100	45.1	37.1	32.1	25	113	96.2
MA-85-112	4400	101.5	157	135	3.10 x 10^-3	37.3	1270	45.1	37.1	32.1	25	118	101.2

Product Specification

Structure and Fastening Principle

Structure with hex socket head cap screw, inner ring, and outer ring

Fastening Principle Diagram

Usage Example

Mounting example

: 30; 45; 60

Part Number
MA-8-21

Part Number	Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Bore Dia. d (Ø)	Hub Dia. (Ø)	Allowable Torque Range (N•m)	Allowable Torque (N•m)	Allowable Thrust Load Range (kN)	Hub Minimum O.D. D2 (S35C Type) (Ø)	Overall Length (mm)	O.D. (Ø)
	MYR 167.95	1 Piece(s)	Available	1 Day(s) or more	10	8	21	20.1~50.0	22	5.60	31	18.6	23.5

Product TOP

Basic Information

Type	Flanged	Body Material	S45C	Centering	Presence
Surface Treatment	No	Tightening Structure	Single cone type	Tightening Method	Mechanical (Wedge Type)
Number of Tightening Bolts	Multiple

Please check the type/dimensions/specifications of the part MA-8-21 in the MechaLock MA standard type series.

Configure

1 Part Numbers

View Part Numbers

Configure Remaining Specifications

Completed

Specification/Dimensions

type
- MA
Clear
Shaft Bore Dia. d(Ø)
5

6

8

10

11

12

14

15

16

17

18

19

20

22

24

25

28

30

32

35

38

40

42

45

48

50

55

60

65

70

75

80
Clear
Hub Dia.(Ø)
16

19

21

23

24

26

28

29

30

31

32

33

38

40

42

43

46

48

50

57

60

62

64

67

70

72

77

82

87

97

102

107
Clear
Allowable Torque Range(N•m)
2.0~20.0

20.1~50.0

50.1~70.0

70.1~100.0

100.1~150.0

200.1~300.0

300.1~500.0

700.1~1000.0

1000.1~3000.0

3000.1~10000.0
Clear
Allowable Torque(N•m)
7

14

22

25

30

50

65

70

75

110

115

120

220

290

320

350

380

410

440

720

770

810

850

1200

1500

1600

1900

2000

3400

3900

4100
Clear
Overall Length(mm)
16

18.3

18.6

18.8

19.8

22

23

23.6

24.1

29.1

30.1

31.1

31.6

32.6

36

36.5

37

37.5

38

38.5

39.5

44.1

45.1
Clear
O.D.(Ø)
18.5

21.5

23.5

25.5

26.5

28.5

30.5

31.5

33

33.5

34.5

35.5

42

44

46

47

50

52

54

62

65

67

69

72

75

77

83

87

92

103

108

113
Clear
CAD
- 2D
- 3D
Clear

Days to Ship

All

1 Day(s) or Less

3 Day(s) or Less

4 Day(s) or Less

8 Day(s) or Less

14 Day(s) or Less
Clear

Specify Alterations

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Products like this...

Part Number
MA-11-24
MA-12-26
MA-14-28
MA-15-29
MA-16-30
MA-80-107

Standard Unit Price	Minimum order quantity	Volume Discount	Days to Ship	RoHS	Shaft Bore Dia. d (Ø)	Hub Dia. (Ø)	Allowable Torque Range (N•m)	Allowable Torque (N•m)	Allowable Thrust Load Range (kN)	Hub Minimum O.D. D2 (S35C Type) (Ø)	Overall Length (mm)	O.D. (Ø)
MYR 276.91	1 Piece(s)		8 Day(s)	10	11	24	20.1~50.0	30	5.60	34	19.8	26.5
MYR 181.77	1 Piece(s)	Available	1 Day(s) or more	10	12	26	20.1~50.0	50	8.41	40	22	28.5
MYR 196.05	1 Piece(s)	Available	1 Day(s) or more	10	14	28	50.1~70.0	65	9.46	44	22	30.5
MYR 212.90	1 Piece(s)	Available	1 Day(s) or more	10	15	29	50.1~70.0	70	9.46	43	23	31.5
MYR 195.76	1 Piece(s)	Available	1 Day(s) or more	10	16	30	70.1~100.0	75	9.46	43	23.6	33
MYR 665.42	1 Piece(s)		14 Day(s) or more	-	80	107	3000.1~10000.0	4100	101.5	182	45.1	113

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How can we improve?

MechaLock MA standard type (MA-8-21)

(i)Caution

Drawing

Product Specification

Specifications Table

Product Specification

Usage Example

Basic Information

Configure

Specification/Dimensions

type

Shaft Bore Dia. d(Ø)

Hub Dia.(Ø)

Allowable Torque Range(N•m)

Allowable Torque(N•m)

Overall Length(mm)

O.D.(Ø)

CAD

Days to Ship

Specify Alterations

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