STANDARD
GRADES AND SURFACE FINISHING OF PLASTIC BALLS | ||
GRADE | TOLERANCE ON DIAMETER (µm) | TOLERANCE ON SPHERICITY (µm) |
0 | ±10 | 5 max |
Ⅰ | ±25 | 12 max |
Ⅱ | ±50 | 25 max |
Ⅲ | ±127 | 60 max |
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GRADES AND SURFACE FINISHING OF PLASTIC BALLS | ||
GRADE | TOLERANCE ON DIAMETER (µm) | TOLERANCE ON SPHERICITY (µm) |
0 | ±10 | 5 max |
Ⅰ | ±25 | 12 max |
Ⅱ | ±50 | 25 max |
Ⅲ | ±127 | 60 max |