... accuracy is max +/-0.2mmPr-bending operationThe lower roll is up and clamps the plate end, the ... machine is lubricated with grease gum.The lower roll, both side rolls is control by photocell sensors ... PLC to control the position of the lower roll, both side rolls , overturn frame and the ... easily, smooth roll can be made. rolling machine, plate roll bender, plate bending roll, CNC 4 roller machine, CNC ...