AFBMA

Tolerances by Grade for Individual Balls Tolerances by Grade for Lots of Balls
  VDws ∆Rw Ra VDwt   ∆S  
Ball Grade Allowable Ball Dia. Variation Allowable Deviation from Spherical Form Maximum Surface Roughness Arithmetic Average Allowable Lot Dia. Variation Nominal Ball Diameter Tolerance Allowable Ball Gauge Deviation High Low

Container Marking Increment

INCH
3 .000003 .000003 0.5 .000005 * +.000030 -.000030 .000010
5 .000005 .000005 0.8 .000010 * +.000050 -.000030 .000010
10 .000010 .000010 1 .000020 * +.000050 -.000040 .000010
16 .000016 .000016 1 .000032 * +.000050 -.000040 .000010
24 .000024 .000024 2 .000048 * +.0001 -.0001 .000010
48 .000048 .000048 3 .000096 * * .00005
100 .0001 .0001 5 .0002 ±.0005 * *
200 .0002 .0002 8 .0004 ±.001 * *
500 .0005 .0005 * .001 ±.002 * *
1000 .001 .001 * .002 ±.005 * *
METRIC µm
3 0.08 0.08 0.012 0.13 * +0.75 -0.75 0.25
5 0.13 0.13 0.02 0.25 * +1.25 -1 0.25
10 0.25 0.25 0.025 0.5 * +1.25 -1 0.25
16 0.4 0.4 0.025 0.8 * +1.25 - 1 0.25
24 0.6 0.6 0.05 1.2 * +2.5 -2.5 0.25
48 1.2 1.2 0.08 2.4 * * 1.25
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 *        

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