The machine is used for ore dressing, chemical, cement, building materials and other industrial sectors  and all kinds of medium hardness of the ore and rock.
This machine is mainly organisms, roll long gears and safety spring components.It has two motor drive, double pulley. Transmission do relative rotation direction and completely broken materia by motor triangle belt and by the two rolls . Roller clearance can adjust within the prescribed scope, so that control the grain-size size.