Products Precision Ball

A.F.B.M.A. STANDARDS (U.S.A.) PRECISION GRADES


AFBMA
GRADES

ROUNDNESS

 LOT DIAMETER
VARIATION		 BASIC DIAMETER
TOLERANCE		 MAX.
INCREMENTS		 SURFACE
ROUGHNESS
INCHES µm INCHES µm INCHES µm INCHES µm INCHES µm
3 .000003 0,08 .000005 0,13 ±.00003 0,76 .000010 0,25 .5 0,012
5 .000005 0,13 .000010 0,25 ±.00005 0,27 .000010 0,25 .8 0,020
10 .000010 0,25 .000020 0,51 ±.0001 2,54 .000010 0,25 1.0 0,025
16 .000016 0,38 .000032 0,76 ±.0001 2,54 .000010 0,25 1.0 0,025
24 .000024 0,63 .000048 1,27 ±.0001 2,54 .000010 0,25 2.0 0,050
48 .000048 1,27 .000096 2,54 ±.0002 5,08 .000050 0,12 3.0 0,076
100 .0001 2,50 .0002 5,08 ±.0005 12,70 .0001 2,54 5.0 0,120
200 .0002 5.08 .0004 10,20 ±.001 25,40 .0002 5,08 8.0 0,203
500 .0005 12,70 .001 25,40 ±.002 50,80 .0005 12,70 - -
1000 .001 25,40 .002 50,80 ±.005 127,00 .001 25,40 - -

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