Model

Shaft Hole

Inner 

Race Width A

Outer 

Race Width C

Outer Dia.

B (h7)

Inner Race 

Boss Dia.

F

Centering Groove 

Dia.

E

Chamfer K

Mounting Tap

Weight kg

Moment of Inertia

kg·m2

PCD D

Effective Screw 

Length

S

Size (H-m) 

Qty.-Dia.×Pitch

Dia. (H7)

Key Slot

Chamfer J

MZ15G

15

5 × 2.3

0.8

55

53

68

25

47

1.3

58

10

6-M5 × 0.8

1.3

0.08 × 10–2

MZ17G

17

5 × 2.3

0.8

63

61

75

28

52

1.3

64

10

6-M5 × 0.8

1.7

0.14 × 10–2

MZ20G

20

5 × 2.3

0.8

64

62

80

30

55

1.3

68

12

6-M6 × 1.0

1.9

0.18 × 10–2

MZ30G-22

22

8 × 3.3

1.0

70

68

100

45

75

1.3

88

16

6-M8 × 1.25

3.2

0.47 × 10–2

MZ30G-25

25

8 × 3.3

1.0

MZ30G

30

10 × 3.3

1.0

MZ35G

35

10 × 3.3

1.0

78

76

110

50

80

1.3

95

16

6-M8 × 1.25

4.4

0.77 × 10–2

MZ45G-40

40

12 × 3.3

1.3

87

85

125

60

95

1.3

110

16

8-M8 × 1.25

6.2

1.40 × 10–2

MZ45G

45

12 × 3.3

1.3

MZ60G-50

50

14 × 3.8

1.5

90

88

155

80

125

1.3

140

16

8-M8 × 1.25

9.5

3.38 × 10–2

MZ60G-55

55

16 × 4.3

1.5

MZ60G

60

18 × 4.4

1.5

MZ70G-65

65

18 × 4.4

1.8

105

103

175

95

145

1.3

162

16

8-M8 × 1.25

13.1

6.01 × 10–2

MZ70G

70

20 × 4.9

1.8