Core Working Principle

• Top Roll: Vertically positioned at the symmetrical center of the two bottom rolls, performs vertical lifting movement (driven by hydraulic cylinder or mechanical screw).
• Two Bottom Rolls: Fixed horizontally, rotate synchronously as drive rolls, providing torque to feed the metal plate.
• Bending Process: The downward pressure of the top roll combined with the rotation of the bottom rolls forces the flat metal plate through continuous multi-pass plastic deformation, rolling it into cylinders, arcs, or cones.

Key Features

1. Classic Symmetrical Structure

• Compact & Rugged Design: Solid welded steel frame, high rigidity, minimal deflection.
• Simplified Layout: Three rolls form an isosceles triangle, ensuring stable plate feeding and uniform stress.
• • Mechanical (W11): Screw-nut & worm-gear drive for vertical movement.
  • Hydraulic (W11Y): Hydraulic cylinder drive for smoother, more powerful lifting.Two Drive Modes:

2. High-Strength Rolls

• Material: Forged from 42CrMo alloy steel.
• Heat Treatment: Surface induction hardened to HRC 50-55, finely ground & polished.
• Benefits: Exceptional wear resistance, prevents plate adhesion & scratching, ensures long service life.

3. Stable & Reliable Drive System

• Dual Bottom Roll Drive: Both lower rolls powered by motor-reducer-gear transmission.
• Strong Torque Output: Ensures no slippage, even for thick/heavy plates.
• Optional Support Rolls: Reinforced idler groups under bottom rolls reduce deflection, improving accuracy for wide/thick plates.

4.User-Friendly Operation

• Simple Controls: Manual/PLC control panel with clear buttons & digital readout.
• Easy Maintenance: Minimal moving parts, accessible components.
• Safety Features: Emergency stop, protective guards, overload protection.

Core Advantages

1. Cost-Effective & Economical

• Lower Initial Investment: Simpler design than 4-roll or asymmetric models.
• Lower Maintenance Costs: Fewer components, easy to service.
• High ROI: Ideal for small-to-medium workshops with budget constraints.

2. Wide Material & Application Versatility

• Materials: Carbon steel, stainless steel, aluminum, alloy plates.
• Thickness/Width: Typically 3-60mm thickness, 500-6000mm width (customizable).
• Shapes: Perfect for rolling cylinders, arcs, and small-angle cones.
• Industries: Shipbuilding, pressure vessels, wind towers, boilers, steel structures, pipelines.

3. High Precision & Quality

• Symmetrical Bending: Uniform curvature across the plate, minimal edge distortion.
• Stable Performance: Consistent results in mass production.
• High Roundness Accuracy: Error controlled within ±0.3~0.5mm.

4. Easy to Operate & Efficient

• Intuitive Process: Minimal operator training required.
• Fast Setup: Quick adjustment of roll position & pressure.
• High Productivity: Continuous rolling process for high-volume output.