等
级

Grade

球直径变动量
ball diameter variation

球形偏差
deviation spherical form

球表面粗糙
surface roughness

批直径变动量
lot diameter variation

基本直径公差
nominal ball deviationtolerance

Vdws

△Sph

Ra

Vdwl

Tdn

不超过not over

um

10

0.25

0.25

0.025

0.5

16

0.4

0.4

0.032

0.8

*

20

0.5

0.5

0.04

1

*

28

0.7

0.7

0.05

1.4

*

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

0.2

10

±25

500

13

13

*

25

± 50

1000

25

25

*

±125

“*”不用not applicable