Technical Data ANSI/AFBMA Std 10-1989 (Revision of 1983)
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Tolerances by Grade for Individual Balls
| VDws | Rw | Ra | ||
| Ball Grade | Allowable Ball Diameter Variation |
Allowable Deviation From Spherical Form |
Maximum Surface Roughness Arithmetic Average |
|
| Inch | ||||
| 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 | * | |
| Metric um | ||||
| 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 | * | |
Tolerances by Grade for Lots of Balls
| VDwt | S | |||
| Allowable lot Diameter Variation |
Nominal Ball Diameter Tolerance |
Allowable Ball Guage Deviation High Low |
Container Marking Increment |
|
| Inch | ||||
| .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 | * | ||
| Metric um | ||||
| 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 | * | ||
| * | * | * | * | |