The machlnes are used for punching shear fhe coldcrimped engine bed with the thickness of 1.2- 2.5mm the width of 2000mm Material strength of 450N／mm²The specifications of punching shear are su~eyed by the bit of TB5—20 mesh grid plate：if the TB TL are changed the punching shear knife is also changed；TB，TL are increased，the punching shear strength is reduced：TB，TL are reduced，the punching shear strength isincreased In order not to damage components for the excess load The nominal tonnage is 63T lf TB TL are reduced thepunching shear strength su rpasses the nominal tonnage，you can reduce the material thickness and width.

The machines are used for punching all kinds of expand plate mesh in construction．common hardware，window anddoo r，machine protecting etc.

Feed mechanism passes the chain link by the main engine di rectcy，the movement accurate is reliable.

The times of feed mechanism punching shear is started from 0 it can shear in free scope.