VDws

∆Rw

Ra

Ball Grade

Allowable Ball
Diameter Variation

Allowable
Deviation From
Spherical Form

Maximum Surface
Roughness
Arithmetic Average

3

.000003

.000003

0.5

5

.000005

000005

0.8

10

.000010

.000010

1

16

.000016

.000016

1

24

.000024

.000024

2

48

.000048

.000048

3

100

.0001

.0001

5

200

.0002

.0002

8

500

.0005

.0005

*

1000

.001

.001

*

Inch

3

0.08

0.08

0.012

5

0.13

0.13

0.02

10

0.25

0.25

0.025

16

0.4

0.4

0.025

24

0.6

0.6

0.05

48

1.2

1.2

0.08

100

2.5

2.5

0.125

200

5

5

0.2

500

13

13

*

1000

25

25

*

Metric um

VDwt

∆S

Allowable lot
Diameter
Variation

Nominal Ball
Diameter
Tolerance

Allowable Ball Guage
Deviation

Container
Marking
Increment

.000005

*

+.000030       -.000030

.000010

.000010

*

+.000050       -.000040

.000010

.000020

*

+.000050       -.000040

.000010

.000032

*

+.000050       -.000040

.000010

.000048

*

+.000100       -.000100

.000010

.000096

*

*

.00005

.0002

±.0005

*

.0004

±.001

*

.001

±002

*

.002

±.005

*

Inch

0.13

*

+0.75       -0.75

0.25

0.25

*

+1.25       -1.00

0.25

0.5

*

+1.25       -1.00

0.25

0.8

*

+1.25       -1.00

0.25

1.2

*

+2.50       -2.50

0.25

2.4

*

*

1.25

5

±12.5

*

10

±25

*

25

±50

*

Metric um