Tolerance of spare parts: 0.002mm
Tolerance of feeding length: 0.003 to 0.005mm
Roughness: 0.04 to 0.1
Efficiency: running speed can reach 300 to 450 strokes per minute
Durable: grinding lifespan is from 1.2 million to 3 million strokes, total lifespan is from 120 to 250 million
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