3-roller plate bending machine WyRoll 3RA series

electrichydraulicfor heavy-duty applications

Overview
The WyRoll 3RA series is an asymmetric 3-roll plate rolling machine designed for high-precision forming of carbon steel, stainless steel and aluminum plates up to 80 mm thickness. Hydraulic upper roll adjustment and electric variable-frequency side roll drives enable fast setup, reduced flat ends and repeatable results down to ±0.1 mm for cylindrical, conical and complex curved parts. Built with heavy-duty components and manufactured to ISO 9001 standards for industrial production environments.

Key Benefits

• Improved initial pinch for thin to medium sheets, minimizing flat ends compared to symmetric designs.
• High positioning accuracy and repeatability for cylindrical, conical and complex curved parts.
• Robust construction with industrial-grade components for continuous operation.
• Energy-efficient variable-frequency side roll drive with overload and torque protection.

Machine Accessories (selection)
Required

• Hydraulic Upper Roll Adjustment — precise vertical positioning with 0.05 mm resolution, double-acting hydraulic cylinders, position feedback sensor and overload protection; design life approx. 100,000 cycles. Example supplier: Bosch Rexroth (hydraulic cylinders with integrated linear displacement transducers).
• CNC Control System — 3-axis (or up to 5-axis) CNC with 3D rolling simulation, automatic springback compensation, real-time roll position monitoring, recipe storage and offline programming compatibility. Example supplier: Weiya Customize (multi-language support, remote diagnostics).
• Variable Frequency Side Roll Drive — energy-saving electric drive (approx. 25% lower consumption vs fixed drives), stepless speed 0.5–15 rpm (model dependent), low-noise (≤70 dB), overload protection and integrated torque monitoring.

Optional

• Conical Rolling Jig — adjustable hardened-steel jig for conical parts (taper ratio 1:5 to 1:20), improving accuracy and reducing setup time.
• Automatic Material Support System — programmable hydraulic supports for long plates (≥2000 mm) to reduce sagging; synchronized with roll rotation and low-friction rollers to protect surfaces.

Additional Product Notes
The asymmetric 3-roll configuration reduces flat ends (to approx. 1.5× plate thickness) and facilitates conical forming with optional jigs. Models can roll high-strength steels (with hardened rolls) such as AH36 or Hardox 450 within model-specified thickness limits. Recommended hydraulic fluids: ISO VG 68 (typical -10°C to 60°C) or ISO VG 46 for low-temperature conditions with viscosity index improvers. Typical maintenance: monthly oil, filters and roll checks; quarterly hydraulic/seal inspections; annual full system calibration.

Technical Specification Matrix
Parameters | WyRoll 3RA 12×2000 | WyRoll 3RA 20×2500 | WyRoll 3RA 30×3000 | WyRoll 3RA 50×3500 | WyRoll 3RA 80×4000
Max. Plate Thickness (mm) | 12 | 20 | 30 | 50 | 80
Max. Plate Width (mm) | 2000 | 2500 | 3000 | 3500 | 4000
Min. Rolling Diameter (mm) | 150 | 250 | 350 | 500 | 800
Upper Roll Diameter (mm) | 180 | 220 | 280 | 350 | 450
Side Roll Diameter (mm) | 150 | 180 | 220 | 280 | 350
Upper Roll Stroke (mm) | 200 | 250 | 300 | 350 | 400
Roll Rotation Speed (rpm) | 0.5-15 | 0.5-12 | 0.5-10 | 0.5-8 | 0.5-5
Total Drive Power (kW) | 15 | 22 | 37 | 55 | 90
Hydraulic System Pressure (MPa) | 16 | 20 | 25 | 25 | 31.5
Control Axes | 3 Axis | 3 Axis | 4 Axis | 4 Axis | 5 Axis
Positioning Accuracy (mm) | ±0.05 | ±0.05 | ±0.05 | ±0.03 | ±0.03
Repeatability (mm) | ±0.1 | ±0.1 | ±0.08 | ±0.08 | ±0.05
Max. Plate Weight (kg) | 2000 | 4000 | 8000 | 15000 | 25000
Machine Dimensions (L×W×H) | 3200×1800×2200 mm | 3800×2000×2500 mm | 4500×2200×2800 mm | 5200×2500×3200 mm | 6000×2800×3800 mm
Weight (kg) | 8500 | 15000 | 28000 | 45000 | 80000

Technical specifications

• Series: WyRoll 3RA (asymmetric 3-roll configuration).
• Max. plate thickness range: 12 mm to 80 mm across models.
• Max. plate width range: 2000 mm to 4000 mm across models.
• Minimum rolling diameters: 150 mm to 800 mm depending on model and material.
• Roll rotation speed variable by model: approx. 0.5–15 rpm (model dependent).
• Drive power range: 15 kW to 90 kW depending on model.
• Hydraulic pressure capacity up to 31.5 MPa for the heaviest models.
• Control: 3-axis up to 5-axis CNC with simulation and springback compensation.
• Precision: positioning accuracy down to ±0.03 mm and repeatability to ±0.05 mm on heavy-duty models.
• Options: conical jigs, automatic material supports and hardened rolls for high-strength steels.