4-Roller Plate Rolling Machine

What is a 4-roll round bending machine?

A 4-roll round bending machine is a type of equipment specially designed for rolling flat sheet metal into cylindrical, conical, or curved shapes. It features four rollers: one top roller, one bottom roller, and two side rollers. The sheet is firmly clamped between the top and bottom rollers, while the two independently adjustable side rollers apply pressure to create the desired curvature. Thanks to this double-pinch design, 4-roll machines excel at producing tight radii, achieving high precision, and minimizing flat ends on the workpiece, making them particularly efficient and versatile for medium to heavy plate bending tasks.

Features of 4-Roller Plate Rolling Machine

• Precision CNC Control: HYRUN’s advanced CNC system delivers ±0.05mm/m bending accuracy with pre-loaded steel grade profiles, making it ideal for modern 4 roller plate rolling machines.

• Heavy-Duty Construction: Built with industrial-grade components, this four roller bending machine easily handles plates up to 30mm thick and achieves a maximum bending radius of 1500mm.

• Dual-Pass Efficiency: Thanks to patented pre-bending technology exclusive to HYRUN’s 4-roll plate bending machine design, material waste is reduced by up to 30% in efficient two-pass operation.

• Automatic Crown Compensation: Self-adjusting top and bottom rollers eliminate deflection, ensuring consistent curvature across the full width of the plate — a hallmark of high-end 4 roller bending machines.

• Safety-Certified Design: CE-certified emergency brakes, overload protection, and light curtains guarantee OSHA-compliant and safe operation on every 4-roll plate roller.

Steps to Use and Points to Note of 4-Roller Plate Rolling Machine

• Pre-Operation Inspection: Before starting your 4 roller rolling machine, always check hydraulic system pressure (20-25 MPa) and roller parallelism (±0.1 mm).

• Material Positioning: Accurately center the steel plate (up to 30mm thick) between the lower rollers of the 4 roll plate bending machine, leaving at least 30mm edge clearance for safe feeding.

• CNC Parameter Setup: Enter the desired bending radius (R150–1600 mm) via HYRUN’s intuitive touchscreen using pre-loaded material profiles — standard on today’s professional 4 roller plate bending machines.

• Dual-Pass Operation: Perform pre-bending in the first pass and final forming in the second; this proven method on a quality 4 roll bending machine reduces spring-back by up to 40%.

• Emergency Protocols: If roller deflection exceeds 0.3 mm/m during operation, immediately activate the safety brake to protect both the four roll plate bending machine and the workpiece.

• Currently, high-performance 4 roller plate rolling machines for sale from HYRUN combine all these advantages in one robust, future-proof package.