ISO steel balls standard

Grade VOWS Ball Dia
variation
?sph Deviation
From Spherical
Form
Surface Roughness
No Larger Than
m
3 0.08 0.08 0.010
5 0.13 0.13 0.014
10 0.25 0.25 0.020
16 0.4 0.4 0.025
20 0.5 0.5 0.032
28 07 0.7 0.040
40 1 l 0.050
60 1.5 1.5 0.060
100 2.5 2.5 0.080
200 5 5 0 150
 
Grade VDWS Ball Dla
variation
Gauge
Interval
preferred Gauge Subgauge
Interval
Subgauge
m
3 0.13 0.5 -5,……,-0.5,0,+0.5,……+5 0.1 -0.2.-0.1,0,4-0.1, +0.2
5 0.25 l -5,……,-1,0,+1,……+5 0.2 -0.4,-0.2.0,+0.2,+0.4
10 0.5 l -9,…….-1,0,+1,……+9 0.2 -0.4,-0.2,0,+0.2,+0.4
16 0.8 2 -10,…….-2,0,4-2,……+10 0.4 -Q.8,-0.4,0,+0.4,+0.8
20 l 2 -10,……,-2,0,+2,……+10 0.4 -Q.8,-0.4,0,+0.4,+0.8
28 1.4 2 -12,…….-2,0,1-2,……+12 0.4 -Q.8,-0.4,0,+0.4,+0.8
40 2 4 -16,……,-4,0,+4,……+16 0.8 -1.6,-0.8,0,+0.8,+1.6
60 3 5 -20,……,-5,0,+5,……+20 l -2-1,0,+1,+2
100 5 10 -40,……,-10,0,+10,……+40 2 -4,-2,0,+2,+4
200 10 15 -60…….,-15,0,+15,……+60 3 -6-3,0,+3,+6
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