1,Japan hydraulic system, 2,PLC control with touch screen, 3,pre- ... roll is 42CrMo , heat treatment is HB220-280.2) down roll and level motion device.The material of ... , down roll, glide bearing. Down bearing adopt SF-2 oil glide bearing.Level motion motor supply the power, ... and lubricate pipe attachment, adopted GB7323-1994 NO 2 lithium grease.3-2 hydraulic system Composed of Y series motor, gear ...