Plate Rolling Series
Hydraulic Three Roll Plate Bending Machine
Industrial-grade hydraulic three roll plate bending machine engineered for precision cylindrical forming, cone rolling and arc bending of steel plates. The KAVDO Three Roll Plate Bender delivers exceptional roundness accuracy and repeatable bending quality — the ideal forming solution for pressure vessel manufacturers, steel structure fabricators, wind tower producers and heavy equipment builders demanding high throughput and tight tolerances.
- Rolling Width 1000 – 6000 mm
- Plate Thickness 6 – 100 mm
- Hydraulic CNC Control System
- Pre-bending Capability Built-in
Heavy Duty
15+
Years Experience
80+
Countries Served
3000+
Machines Delivered
CE&ISO
Certified Quality
Product Overview
Precision Rolling. Perfect Roundness. Maximum Productivity.
The KAVDO Hydraulic Three Roll Plate Bending Machine features a symmetrical or asymmetrical three-roll configuration with hardened alloy rollers, steel-welded frame and powerful hydraulic drive — handling thin sheet to thick heavy plate with consistent accuracy.
With optional CNC positioning, it performs cylindrical, cone, oval and multi-radius bending in a single setup. Built-in pre-bending eliminates flat-end waste, boosting efficiency by up to 30%.
- Full hydraulic drive with proportional valve control for smooth, precise roll movement
- Cylinder, cone, oval and multi-radius bending in a single machine
- Optional CNC controller with digital readout for repeatable precision
Performance Highlights
Key Advantages
The KAVDO three roll plate bender combines heavy-duty hydraulic power, precision roller geometry and intelligent control — engineered for workshops demanding high-volume output and tight bending tolerances.
High Rolling Efficiency
Powerful hydraulic drive system delivers fast roller rotation and rapid side roll positioning. Complete a full cylindrical roll in fewer passes compared to conventional mechanical machines — increasing daily throughput by up to 40% and reducing per-unit forming cost.
Pre-Bending Built In
Asymmetrical roller geometry enables the plate leading and trailing edges to be pre-bent directly on the machine — eliminating the flat-end problem common in symmetrical designs. Reduces material waste and removes the need for a separate press brake operation.
Versatile Forming Capability
Roll cylinders, cones, ellipses, S-curves and multi-radius arcs without changing tooling. Independent hydraulic control of each side roll allows asymmetric positioning for cone rolling and irregular shapes — one machine handles the full spectrum of plate forming requirements.
CNC Digital Control
Optional CNC controller with digital position readout, programmable bending sequences and memory storage for up to 999 programs. Operators recall proven parameters instantly for repeat jobs — eliminating trial-and-error setup and ensuring consistent output batch after batch.
Heavy-Duty Construction
Stress-relieved welded steel frame with high-rigidity box structure resists deflection under maximum rolling force. Hardened alloy steel rollers (HRC 55–60) with induction-hardened surface provide exceptional wear resistance and 10+ years of service life under heavy production loads.
Operator-Friendly Design
Pendant control station with ergonomic layout allows the operator to stand at the optimal viewing position during rolling. Emergency stop, overload protection and hydraulic safety valves ensure full operator safety. Foot pedal control available for hands-free roll actuation.
Need Help Choosing the Right Roll Configuration?
Our engineers will recommend the optimal three roll plate bender based on your plate thickness, width and material grade.
Technical Data
Specifications
Available in multiple capacity configurations to match your plate thickness and width requirements. All models feature full hydraulic drive and optional CNC control.
| Parameter | W11-4×2000 | W11-6×2000 | W11-6×2500 | W11-8×2000 | W11-8×2500 | W11-10×2000 |
|---|---|---|---|---|---|---|
| Rolling Thickness (mm) | 4 | 6 | 6 | 8 | 8 | 10 |
| Max Rolling Sheet Length (mm) | 2000 | 2000 | 2500 | 2000 | 2500 | 2000 |
| Top Roller Diameter (mm) | 150 | 150 | 170 | 185 | 210 | 185 |
| Lower Rollers Diameter (mm) | 120 | 120 | 150 | 150 | 170 | 150 |
| Central Distance Between Lower Rollers (mm) | 200 | 200 | 240 | 240 | 260 | 240 |
| Min Rolling Diameter (mm) | 200 | 200 | 250 | 250 | 280 | 280 |
| Rolling Speed (m/min) | 4 | 4 | 4 | 4 | 4 | 4 |
| Motor Power (kW) | 2.2+1.1 | 2.2+1.1 | 4+1.5 | 4+1.5 | 5.5+2.2 | 5.5+2.2 |
| Dimension L (mm) | 3400 | 3400 | 4000 | 3500 | 4000 | 3500 |
| Dimension W (mm) | 650 | 650 | 700 | 650 | 700 | 750 |
| Dimension H (mm) | 1000 | 1000 | 1100 | 1000 | 1100 | 1200 |
| Weight (kg) | 1520 | 1520 | 2060 | 1430 | 1780 | 1850 |
* Bending capacity is based on Q235 (S235JR / A36) mild steel at room temperature. Actual capacity for higher-strength materials (Q345, stainless steel, etc.) is reduced proportionally. Custom configurations with wider rolling widths up to 6000 mm and thicknesses up to 100 mm available upon request.
Core Components
Machine Structure
Precision-engineered with heavy-duty industrial components — delivering reliable performance and exceptional forming accuracy for demanding plate rolling applications.
-
1
Top Roll (Drive Roll)
42CrMo alloy steel roller with induction-hardened surface (HRC 55–60). Driven by gearbox and hydraulic motor for consistent torque. Optional crown compensation corrects deflection for uniform bending.
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2
Bottom Side Rolls
Two independently adjustable side rolls beneath the top roll. Hydraulic cylinders control vertical and angular movement for cylinder, cone and multi-radius forming. Linear guides ensure precise positioning.
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3
Hydraulic System
High-pressure hydraulic power unit with proportional directional valves for stepless speed control and precise force distribution. Rexroth / Parker components ensure reliable, low-maintenance operation.
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4
Control System
PLC-based control with digital position readout for each roll. Optional CNC controller stores up to 999 bending programs with multi-step sequences for automatic forming of complex shapes.
Customize Your Machine
Optional Equipment
Tailor your three roll plate bender with a range of optional components to maximize forming capability, structural rigidity and operational efficiency for your specific application.
Configuration
Three-Roll Design
Classic three-roll asymmetric layout with one driven top roll and two adjustable bottom rolls. Provides excellent pre-bending capability and simplified operation for a wide range of plate thicknesses.
- Asymmetric roll arrangement
- Full pre-bending on both edges
- Suitable for 2 – 100 mm plate
- Compact footprint design
Power System
Mechanical Drive
Heavy-duty gear-driven transmission system powered by high-torque motor and hardened gearbox. Delivers consistent rolling force with stepless speed control for smooth, reliable plate forming.
- Hardened alloy steel gearbox
- Stepless variable speed control
- High torque at low speed
- Low maintenance design
Frame
Stable Structure
Welded steel frame with stress-relieved construction and precision-machined bearing housings. Ensures minimal deflection under heavy load for consistent bending accuracy across the full working length.
- Stress-relieved welded frame
- Precision-machined housings
- Anti-vibration design
- Long-term dimensional stability
Core Component
Upper Roll
Forged 42CrMo alloy steel top roll with induction-hardened surface (HRC 55–60). Driven directly by the main transmission for uniform torque distribution and consistent forming pressure across the plate width.
- 42CrMo forged alloy steel
- Surface hardness HRC 55–60
- Optional crown compensation
- Drop-end bearing for easy unloading
Core Component
Lower Roll
Two independently hydraulic-adjustable bottom rolls with linear guide positioning. Enables precise control of bending radius and supports cone rolling through individual angular tilting adjustment.
- Independent hydraulic adjustment
- Linear guide positioning
- Individual tilt for cone rolling
- Hardened alloy steel surface
Layout
Symmetrical Structure
Symmetrical three-roll configuration with the top roll centered between two equally spaced bottom rolls. Provides balanced force distribution for uniform bending and simplified diameter calibration.
- Centered top roll geometry
- Balanced force distribution
- Even curvature on both sides
- Simplified calibration process
How It Works
4-Step Plate Rolling Workflow
From flat plate to finished cylinder — a streamlined process that delivers precision results with minimal setup time and operator effort.
1
Load & Align Plate
Feed the steel plate between the top roll and side rolls using the rear support arms. Align the plate edge perpendicular to the rollers using the side guide. The hydraulic clamping system secures the plate between the top and bottom rolls.
2
Pre-Bend Edges
Raise the side rolls to pre-bend the leading edge of the plate. After the first pre-bend, reverse the plate feed direction and pre-bend the trailing edge. This eliminates the flat-end problem and ensures a fully round cylinder without secondary operations.
3
Continuous Rolling
With both edges pre-bent, raise the side rolls to the calculated bending position and engage continuous forward rolling. The plate passes through the rollers multiple times as the side rolls progressively increase curvature until the target diameter is achieved.
4
Unload & Inspect
Open the drop-end bearing housing and slide the finished cylinder off the top roll from the side. Measure the diameter with a tape or laser gauge. CNC-equipped machines automatically record the bending parameters for repeat production.
Rolling Capabilities
Materials & Forming Samples
From thin sheet metal to heavy structural plate, from perfect cylinders to complex cones — see the versatility and forming quality achievable with the KAVDO three roll plate bender.
Carbon Steel Plate
Q235, Q345, A36, S355 and high-strength structural steel up to 100 mm thickness with full pre-bending capability.
Stainless Steel
304, 316L and duplex stainless steel with protective film rolling to prevent surface scratching for food-grade and chemical vessels.
Aluminum Alloy
5052, 5083, 6061 aluminum alloy plate for tank trucks, marine applications and lightweight structural components.
Elliptical & Oval Forming
Multi-radius bending for elliptical cross-sections, oval shapes and architectural curves using CNC multi-step programming.
Applications
Industries We Serve
From pressure vessel fabrication to wind energy tower production, from shipbuilding to architectural steelwork — the KAVDO three roll plate bender delivers the forming precision and production throughput demanded by the world’s most critical industries.
Buyer’s Guide
Three Roll vs. Four Roll Plate Bender
Understand the key differences to select the optimal plate rolling machine for your production requirements, budget and application complexity.
Recommended
KAVDO Three Roll Plate Bender
Best value for most plate forming applications
- Lower initial investment — 30–40% less than equivalent four roll machines
- Simpler structure with fewer components — lower maintenance costs
- Built-in pre-bending capability eliminates flat ends
- Excellent for cylinders, cones and standard production forming
- Smaller footprint — saves valuable workshop floor space
- Faster learning curve for operators — production-ready in hours
Four Roll Plate Bender
Premium choice for complex, high-precision work
- One-pass pre-bending — plate does not need to be reversed
- Top roll clamping grips plate firmly during initial forming
- Independent side and pinch rolls for maximum shape flexibility
- Higher precision roundness for critical pressure vessel codes
- Higher equipment cost and larger machine footprint
- More complex maintenance with additional hydraulic circuits
Why KAVDO
Your Trusted Manufacturing Partner
Beyond machines — we deliver complete plate forming solutions including pre-sales engineering consultation, installation commissioning, operator training and lifelong after-sales support.
Factory Direct Price
Buy directly from our own factory — no middlemen. Competitive pricing with transparent quotation and no hidden costs. Bulk order discounts available.
Engineering Support
Dedicated project engineer reviews your drawings, recommends the optimal machine configuration and provides forming process guidance from quotation through production ramp-up.
Global Shipping
Professional heavy equipment export packing with anti-rust treatment, fumigation certificate and transport insurance. Full container or break-bulk shipping worldwide.
Lifetime Support
Remote video troubleshooting, spare parts supply within 48 hours, on-site installation commissioning and optional annual maintenance service contract for the life of the machine.
Get Started
Start Your Project with KAVDO Today
Get professional advice and competitive pricing within 24 hours. Tell us about your requirements and our team will prepare a tailored solution for you.
- Response within 24 hours
- Free technical consultation & quotation
- Serving 80+ countries worldwide
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