1.linear speed of grinding wheel: 12m/S 2. Specification of grinding wheel : G260APRI170×40×32 36 granules G260APRI170×40×32 80 granules 3.electric motor: three phase 380V 50Hz 1400r/min 4. working size: 160mm×44mm×214mm 5. stroke of working grind: 20m