ISO国际标准及中国标准
GRADE |
Nominal Diameter |
Ball Dia. Variation |
Deviation From Spherical Form |
Surface Roughness |
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To mm |
NO Larger Than (U) |
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3 |
12.7 |
0.08 |
0.08 |
0.012 |
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5 |
18 |
0.13 |
0.13 |
0.02 |
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10 |
|
0.25 |
0.25 |
0.025 |
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16 |
30 |
0.4 |
0.4 |
0.032 |
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20 |
|
0.5 |
0.5 |
0.04 |
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28 |
50 |
0.7 |
0.7 |
0.05 |
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40 |
80 |
1 |
1 |
0.08 |
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GRADE |
LOt Dia. Variation |
Gauge Interval |
Preferred Gauge |
Subgauge Interval |
Subgauge |
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|
NO Larger Than (u) |
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3 |
0.13 |
0.5 |
-5, -4.5, … -1, -0.5,0,+0.5 +1 … +4.5,+5 |
0.1 |
-0.2,-0.1,0,+0.1,+0.2 |
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5 |
0.25 |
1 |
-5, -4, … -2, -1,0,+1 +2 … +4,+5 |
0.2 |
-0.4,-0.2,0,+0.2,+0.4 |
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10 |
0.5 |
1 |
-9, -8, … -2, -1,0,+1 +2 … +8,+9 |
0.2 |
-0.4,-0.2,0,+0.2,+0.4 |
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16 |
0.8 |
2 |
-10, -8, … -4, -2,0,+2 +4 … +8,+10 |
0.4 |
-0.8,-0.4,0,+0.4,+0.8 |
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20 |
1 |
2 |
-10, -8, … -4, -2,0,+2 +4 … +8,+10 |
0.4 |
-0.8,-0.4,0,+0.4,+0.8 |
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28 |
1.4 |
2 |
-12, -10, … -4, -2,0,+2 +4 … +10,+12 |
0.4 |
-0.8,-0.4,0,+0.4,+0.8 |
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40 |
2 |
4 |
-16, -12, … -8,-4,0,+4 +8 … +12,+16 |
0.8 |
-1.6,-0.8,0,+0.8,+1.6 |
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钢球的级别是由公差及钢球表面所决定的。 |