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