... for repairing, grinding, polishing, crystallizing millstones.diamond floor grinding machine HWG 70 has the quickest motor speed, from 300 rpm ... painting, coating, epoxy, urethane, glue, polyurethane, mastic with PCD tools.Parameter: Weight 280KG Extra (Iron) Weight 45KG Current 24A Motor ... 900*700mm The rotation way of HWG 70: The diamond tools to be chosen: The effect of grinding and polishing:.... ...