精密等级别Grade | 球直径变动量(Wdws ball dia variation) | 球形误差 sph deviation From Spherical form | 表面粗糙度RaSurface Roughness |
不超过No Larger Than | |||
μm | |||
3 | 0.08 | 0.08 | 0.012 |
5 | 0.13 | 0.13 | 0.02 |
10 | 0.25 | 0.25 | 0.025 |
16 | 0.4 | 0.4 | 0.032 |
20 | 0.5 | 0.5 | 0.04 |
28 | 0.7 | 0.7 | 0.05 |
40 | 1 | 1 | 0.08 |
60 | 1.5 | 1.5 | 0.10 |
100 | 2.5 | 2.5 | 0.125 |
200 | 5 | 5 | 0.2 |
500 | 12.5 | 12.5 | 0.25 |
1000 | 25 | 25 | 0.3 |
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