... is nicety, bulk small, light, effect is high, no dust. High precision, small size, light weight, high efficiency, no dust, clean, simple operation, beautiful ... whole stainless steel,the body of aluminium alloy,the real high-speed high-power motors,it reaches to 25000(r/m) Grinding ... key of this machine is it adopts the high speed motor and the high speed antifriction bearing. While working the the speed ...