HB-superfinishing machine for rotor/screw pump rotor specially-replace grinding,polishing,rolling,buffing,b...

HB-superfinishing machine;no abrasive,only use machining oil,save money;process speed just like turning,save time;obtain roughness quality Ra0.1 easily;improve the  surface hardness more than 20%;extend the workpice using life for more than 5 times;it can be used on all kinds of machine tools.......