... welded,vibration to eliminate stress,high in rigidity.Hydraulic drive,swing beam,return of knife beam is smooth and ... welded,vibration to eliminate stress,high in rigidity.Hydraulic drive,swing beam,return of knife beam is smooth and ... the shearing times are on the front of the machine. The stroke of knife or beam can be ... .Preselection of cutting number and cutting strokes. Hydraulic swing beam shear