This machine can perform better in all kind of preparation work even in grind changing, with steadily and negligible noise, even if the unit size is larger. It can be known as the versatile polisher by increasing the work 20 -- 30%, it meets customers required speed 500100rpm, 400800rpm, 300600 rpm and 200400 rpm also. Main performance:- Diameter: 230mm Abrasive Paper Diameter: 230mm Speed: 5001000rpm Electromotor: YSD802-48 380V 50Hz Dimension: 360X480X680mm Net Weight: 70Kg.