Four Roll Section Bending

Working Principle

  

General Description

In this type of 4 roll section bending machine the bottom roll works as apinch roll and the material is clamped firmly betwwen top and bottom roll .The side roll advances to give desired radious of bending

Since the bending force is applied nearer to clamping point the unbend portion of section left straight is at minimum.

Due this working principle of machine the straight portion of section is at minimum which increases effective material utilisation.