The machine adopts athreeroller symmetrical structure,the upper roll can move both vertically and horizontally, and meanwhile has the double functions of preflex and ring-bending. The upper roll is in the shape of a drum, the lower roll has additional rollers by adjusting which a wide range of high-precision products, from thin plates to thick ones, can be produced. The NC control can be realized, with only one simple and reliable operation to largely improve efficiency. An additional tapering reel enables rolling of work pieces with a great taper. The upper roll's vertical and horizontal displacements will be displayed digitally, and the displacements are clear and distinctive Their feature: 1.High precision and pre-bending:the straight edge length can be set freely,the upper roller press to pre-bend. 2.NC control,high-productivity:parameters are controlled by NC,easy for operation,improve the productivity greatly. 3.Safety:the lower rollers are fixed,the upper-roller move vertically or horizontally,the job does not move with the trouble. Product details: Technical Parameterspecification and typeRoll-plate max thicknessRoll-plate max widthFull load roll-plate mindiameterUpper-axle diameterLower-axle diameterMain motor powerW11S-35*2500352500130046026037