等级
Grade

球直径变动量
ball diameter variation

球形偏差
deviation from spherical from

球表面粗糙度
surface soughness

球直径变动量
lot diameter variation

基本直径公差
nominal ball deviation tolerance

Vdws

△Sph

Ra

Vdwl

Tdn

不超过not over

μm

10

0.25

0.25

0.025

0.5

*

16

0.4

0.4

0.032

0.8

*

20

0.5

0.5

0.05

1

*

28

0.7

0.7

0.05

1.5

*

40

1.0

1.0

0.08

2

*

60

1.5

1.5

0.10

3

*

100

2.5

2.5

0.125

5

±12.5

200

5

5

0.5

10

±25

500

13

13

*

25

±50

1000

25

25

*

50

±125

等级
Grade

批直径变动量
lot diameter variation

规值间距
guages interval

常用规值　
preferred guages

分规值间距
subguage interval

分规值
subguages

10

0.5

1

-9,...-1,0,+1,...+9

0.2

-0.4,0.2,0+0.2,+0.4

16

0.8

2

-10,...,-2,0,+2,...+10

0.4

-0.8,0.4,1,+0.4,+0.8

20

1

2

-10,...,-2,0,+2,...+10

0.4

-0.8,0.4,0,+0.4,+0.8

28

1.4

2

-12,...,-2,0,+2,...+12

0.4

-0.8,0.4,0,+0.4,+0.8

40

2

4

-16,...,-4,0,+4,...+16

0.8

-1.6,-0.8,0,+0.8,+1.6

60

3

5

-20,...,-5,0,+5,...,+20

1

-2,-1,0,+1,+2

精度等级
振动组别
钢球直径

G20

Z1

Z2

Z3

超过
over

过
to

平均值
average

单个值
Max

平均值
average

单个值
Max

平均值
average

单个值
Max

4.5

6.5

39.5

41.5

37.5

39.5

35.5

37.5

6.5

7.5

40

42

38

40

36

38

7.5

10

40.5

42.5

38.5

40.5

36.5

38.5

10

11

42

44

40.5

42.5

36.5

40.5

11

12

42.5

44.5

41

43

39

41

12

13

43

45

41.5

43.5

39.5

41.5

13

14

43.5

45.5

42

44

40

42

14

15

44

46

42.5

44.5

40.5

42.5

15

16

44.5

46.5

43.5

44.5

40.5

42.5

16

17

45

47

43

45

41

43

17

17.5

45.5

47.5

43

45

41

43

公称尺寸
nominal faiameter

最小硬化层
minimum case depth

≥at least

＜at least

0.3

1.5

0.1

1.5

2.0

0.4

2.0

3.0

0.5

3.0

4.5

0.6

4.5

5.5

0.8

5.5

6.5

0.9

6.5

9.5

1.1

9.5

11.0

1.4

11.0

12.5

1.7

12.5

14.0

1.8

14.0

19.0

1.9

19.0

38.0

2.0

mm in

重(kg)

个数（近似）
about

mm in

重(kg)

个数（近似）
about

mm in

重(kg)

个数（近似）
about

0.5000

0.00051

1960780

8.000

2.09

478

20.6370　13/16

35.8

27.9

0.6800

0.00128

781250

8.5000

2.5

400

21.0000

37.75

26.49

0.800

0.00209

478470

8.7312　11/32

2.71

369

21.4313　27/32

40.1

24.9

1.0000

0.00408

245100

9.0000

2.97

337

22.2250　7/8

44.8

22.3

1.2000

0.00705

141840

9.5250　3/8

3.52

284

23.0000

49.95

20.17

1.3000

0.00893

111980

10.0000

4.08

245

23.0188　29/32

49.8

20.1

1.4500

0.0124

80645

10.3188　13/32

4.48

223

23.8125　15/16

55.1

18.2

1.5800　1/16

0.016

62350

11.0000

5.42

185

24.0000

56.34

17.75

1.7500

0.0218

45871

11.1125　7/16

5.60

179

24.6063　31/32

60.8

16.5

2.0000

0.0325

30700

11.500

6.22

161

25.0000

63.68

15.70

2.3812　3/32

0.055

18182

11.5094　29/64

6.22

161

25.40000　1

66.89

15

2.5000

0.0637

15698

11.9062　15/32

6.88

145

26.9875 1`/32

73.3

13.64

3.0000

0.110

9091

12.0000

7.04

142

26.9875 1`/16

80.2

12.47

3.1750 1/8

0.131

7634

12.3031 31/64

7.60

132

27.7812 1³/32

87.4

11.4

3.5000

0.175

5717

12.7000 1/2

8.35

120

28.0000

89.47

11.18

3.9688 5/32

0.255

3922

13.4938 17/32

10.0

100

28.5750 1`/8

95.2

10.50

4.0000

0.261

3831

14.0000

11.18

89

30.1625 1³/16

112

8.93

4.7625 3/16

0.441

2268

14.2875 9/16

11.9

84.0

5.0000

0.510

1961

15.0812 19/32

14.0

71.4

5.1594 13/64

0.560

1786

15.8750 5/8

16.3

61.3

5.5562 7/32

0.699

1431

16.0000

16.69

59.9

5.9531 15/64

0.860

1163

16.6688 21/32

18.9

52.9

6.0000

0.881

1136

17.0000

20.02

50

6.3500 1/4

1.04

962

17.4625 11/16

21.7

46.1

6.5000

1.119

894

18.2562 23/32

24.8

40.3

6.7469 17/64

1.25

800

19.0000

27.96

35.77

7.1438 9/32

1.49

671

19.0500 3/4

28.2

35.5

7.9372 5/16

2.04

490

19.8438 25/32

31.9

31.4