hyaulic rolling machine with pre-bending function, top roll can ... of roll, down roll bearing pedestal, down roll input gear, down roll, glide bearing. Down bearing adopt SF-2 ... main drive device It composed of motor, hard gear speed reducer, output gear, main motor can tuning in two direction and ... grease.3-2 hydraulic system Composed of Y series motor, gear pump , valves , oil tank, pipe and so on ...