The support roller is used to support the middle of the lower roller to improve the rigidity of the lower roller and thus the forming accuracy of the workpiece.
The support roller is used for support in the middle of the lower roller, which improves the rigidity of the lower roller and thus improves the forming accuracy of the work piece.
The back-up roll is used to support the middle part of the lower roll to improve the rigidity of the lower roll, so as to improve the forming accuracy of the workpiece.<br>