Grades - AFBMA0 pages
ANSI/AFBMA Std 10-1989 (Revision of 1983)
Tolerances by Grade for Individual Balls Tolerances by Grade for Lots of Balls VDws RwRa 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 3.000003.0000030.5 .000005*+.000030 -
.000030 .000010
5.000005.0000050.8 .000010*+.000050 -
.000030 .000010
10.000010.0000101 .000020*+.000050 -
.000040 .000010
16.000016.0000161 .000032*+.000050 -
.000040 .000010
24.000024.0000242 .000048*+.0001 -.0001 .000010
48.000048.0000483 .000096**.00005
100.0001.00015 .0002.0005**
200.0002.00028 .0004ѱ.001**
500.0005.0005* .001.002**
1000.001.001* .002ѱ.005** METRIC m 30.080.080.012 0.13*+0.75 -0.75 0.25
50.130.130.02 0.25*+1.25 -1 0.25
100.250.250.025 0.5*+1.25 -1 0.25
160.40.40.025 0.8*+1.25 - 1 0.25
240.60.60.05 1.2*+2.5 -2.50.25
481.21.20.08 2.4**1.25
1002.52.50.125 5ձ12.5**
200550.2 1025**
5001313* 25ѱ50**
10002525* >