Cylindrical Grinding Applications 2 Machine Model - GCH-130 Component Name - Cassette Heads Material - Shellac Hardness - ---- Grinding allowance - 2.5mm on Radius No.of Grinding setup / Passes - One Achievable Accuracies Size tolerance - --- Circularity - 0.003mm. Cylindricity - --- Surface finish - Ra 0.3/Um Production rate Pcs per hour (100% efficiency) - 1200