... , granite, terrazzo;3, for coarse grinding, medium grinding, finepolishing, crystallization, preparation, maintenance.Performance:1, The frequency converter could change the motor speed,for ... 45KG Current 16A Motor 10HP (7.5KW) Inverter 10HP/15HP Voltage 220/380/460V Hertz 50/60HZ Disc speed 300-1750rpm ...