Unrivaled Service and Support
What are we able to provide to our customers?
> State of the Art machine installation, start up and commissioning to assure the optimal initial machine operation
> Fast and effective response thanks to our team of dedicated technicians in our Help Desk support
> Quick dispatch of parts thanks to our large stock of parts
> Quick dispatch of a technician thanks to our team of field service engineers dedicated to Service (no sharing with Production!)
> Full range of Service to maintain your machine at the best working condition and reduce downtime
• Assessment visit and Planned Preventative Maintenance
• Effective Telephone Support 24 Hours a Day
• Remote assistance and remote machine connections
• Training to machine operators and site maintenance team
• Machine overhaul and upgrade
• Suggestion of spares package to be stocked to reduce risk of downtime
** New iRoll Controls
- Improved ease of use for the new smartphone-like HMI (Human-Machine Interface)
- ERGONOMIC CONSOLE AND HIGH-RES INTERFACE
- Optimized for 24/7 operations, functional and durable for any kind of workshop
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STATE-OF-THE-ART 3D GRAPHICS
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Real-time fabrication fine-tuning thanks to high-res 3D simulation
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3D machine interface for an accurate live visualization of all the movements of the machine
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DEDICATED CUSTOMER SUPPORT
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Remote Service Management, Ongoing Training and Maintenance Routine Analysis
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Rolling Line Troubleshooting: Talk & Watch with Smart Glasses
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ASSISTED MANUAL MODE FOR EXPERT OPERATORS
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Multi-pass aid generating an automated sequence for the selected number of passes
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Re-rolling aid suggesting the most appropriate apple-shape geometry (ASME Tolerances Compliance System)
Davi MCA | 4 Roll Machinery - Light Thickness
Whenever repeatability, productivity and ease of use are of essence, the 4-roll is the technology of choice. In a 4-roll machine, latest development of the rolling technology, the bottom roll clamps the plate guaranteeing a perfect control over its position throughout the whole forming process. The side rolls, actuated by the unique DAVI planetary guides technology, provide the necessary bending force achieving the tightest diameters per capacity on the market (1.1 of the top-roll) obtaining the highest accuracy thanks to the perfect parallelism offered by the patented Servo-Tronic© system. Compared to other technologies, 4-roll machines stand out for allowing fully CNC-automated production processes, significantly decreasing the reliance on operators’ skills and, hence, making it the most suitable tech for mass-production.
Davi MCB | 4 Roll Machinery - Medium -Heavy Plate
Introducing Davi’s 4-roll plate rolling machine, a state-of-the-art technology that excels in repeatability, productivity, and ease of use. This advanced machine features a bottom roll that clamps the plate, guaranteeing precise control throughout the forming process. The side rolls, powered by Davi’s planetary guides technology, provide exceptional bending force, achieving the tightest diameters in the market. The patented Servo-Tronic© system ensures parallelism of the rolls at all times, even in the event of electronics failure. With its compact and closed frame, customizable options, enhanced operability, and reduced maintenance requirements, Davi’s 4-roll machine is a top choice for mass production and various industrial sectors.
Davi - MCO | 3 Roll Machinery | Double Pinch
The most common design in the industry, with the top roll fixed, and the two side rolls that move up and down to pre-bend the edges, and to roll the plates.
The most inexpensive roll for plates from 15-20 mm thickness, up to 80-100 mm , and more, it is recommended for limited production volumes.
Davi - MAV | 3 Roll Machinery | Variable Axis
The Davi 3-roll variable-axis plate rolling machine is a flexible and accurate tool for plate bending. It features motorized rolls, precise positioning, and a sturdy frame for enhanced performance. The tilting rolls enable precise cone bending, while mechanical and hydraulic symmetry ensure improved tolerances and load distribution. With the patented Servo-Tronic© system, rolls parallelism is maintained, and the multi-gearbox configuration enhances operability and maintenance. Davi machines are reliable and efficient for plate bending applications.
Frequently Asked Questions
While 3-roll variable axis machines offer flexibility for thick plates and complex cones, the 4-Roll machine is the modern standard for 90% of fabrication shops, especially when paired with CNC.
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The Pinch: The bottom roll clamps the plate securely against the top roll, preventing slipping (a common issue with 3-roll).
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Speed: A 4-roll machine is typically 50% faster as it allows for rolling in a single pass.
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Safety: The plate is loaded horizontally (not tilted), which is safer for operators.
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CNC Readiness: The 4-roll geometry is the only true platform for full automation, making it the correct choice for companies looking to reduce operator dependency.
Pre-bending is the process of bending the leading and trailing edges of the plate to minimize the “flat end” waste often left by inferior machines. High-end CNC Plate Rolls utilise high-force hydraulic cylinders to pinch the material at the very edge before the rolling rotation begins. Superior pre-bending capabilities significantly reduce post-fabrication welding and grinding time, ensuring a perfect cylinder from the start.
Yes, modern CNC Metal Rolling systems have revolutionized cone rolling. Historically a difficult manual task, advanced CNC controls now utilize specific algorithms to manage the different speeds required for the inner and outer diameters of a cone. Features like conical bending packages and tiltable rolls allow operators to produce complex conical reducers and buckets with high repeatability and minimal trial-and-error.
This is the core engineering advantage of owning a Davi. Most competitor machines use Linear Guides (straight up and down movement), which require constant greasing and are prone to premature wear from mill scale and dust.
Davi utilises Planetary Swing Guides (PSG). This design wraps around a central pivot, eliminating friction entirely.
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No Lubrication Needed: It is a permanent, lube-free solution.
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Mill Scale Proof: The design naturally deflects dirt and scale.
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Maximum Torque: It allows for shorter, stiffer frames that deliver higher torque to the rolls.
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Lifetime Accuracy: While linear guides get “sloppy” over time, Davi’s PSG maintains factory precision for the life of the machine.
This is the most critical decision in metal forming. A 3-roll variable axis machine is excellent for versatility and heavy thickness, allowing for adjustable geometry. However, a 4-roll CNC plate roll is the industry standard for high-production, high-precision shops. The 4-roll design allows for secure plate pinching (preventing slippage), safer horizontal loading, and is the only geometry capable of fully automated, unattended CNC rolling operations.
Davi’s leadership is built on over 50 years of Italian engineering excellence (since 1966) and sheer scale. They are the largest manufacturer of plate and angle rolls in the world by sales volume, heavily investing in R&D. Unlike competitors who batch-produce, Davi maintains a massive “Ready-to-Ship” inventory. For Irish fabricators, this means buying from a brand with the highest financial stability, the most advanced quality control (ISO 9001 certified), and a machine that holds the highest resale value in the industry.
While Davi provides the global technology, Engineering Machinery provides the local reliability. We handle the entire logistics, offloading, commissioning, and training process.
Crucially, Davi machines are built using top-tier, non-proprietary components (SKF bearings, Rexroth hydraulics, Siemens electronics). This means spare parts are readily available via Engineering Machinery’s local stock , ensuring you never face long downtime waiting for a custom part.
The iRoll eXtreme moves away from old-fashioned, button-heavy industrial panels to an intuitive, “Apple-like” interface.
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CAD to Part: You can import DXF files directly, and the CNC automatically generates the rolling program.
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3D Simulation: Before you waste a sheet of steel, the controller simulates the bend on-screen to prevent collisions or errors.
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Bluetooth/WiFi Connectivity: It connects seamlessly to your office network for production tracking (Industry 4.0).
Finding skilled rolling operators in Ireland is difficult. Davi addresses this with Lazer and Vision systems that act as a “Virtual Senior Operator.”
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Real-Time Correction: Sensors constantly monitor the radius of the plate during the rolling process.
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Spring-Back Management: The system detects the material’s yield strength and automatically calculates spring-back compensation.
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Autonomous Operation: In multi-pass mode, the machine can autonomously re-roll the cylinder to achieve the exact tolerance required, drastically reducing the need for manual measurements and trial-and-error.
Calculating capacity requires more than just plate thickness. You must consider the Yield Strength of the material (e.g., Mild Steel vs. Hardox or Stainless Steel) and the minimum diameter you wish to roll. A machine rated for 20mm thickness at a large diameter may only handle 12mm at tight diameters. We recommend consulting with our engineering team to review your yield points and plate widths to ensure your hydraulic plate roll is future-proofed for heavy-duty applications.
WHAT IS A PLATE ROLL? | Engineering Machinery | #knowledgelab
A Plate Rolling Machines is a bending machine that transforms a flat sheet of steel into a circular cross-section, typically named a shell or can. The shell can be used to build tanks; boilers and a huge number of different others circular containers. The plate roll can be made with two, three, or four rolls, and the bending process is performed by inserting the sheet inside the rolls. After having pinched the sheet with the rolls, and rotating the rolls, to feed the sheet, the circular can is made. The position assumed by the side rolls estabilish the diameter of the shell.
Plate Rolling Machines – 3 Rolls Plate Machine | 4 Rolls Plate Machine | NC & CNC Controlled Plate Machines.
Innovative and exclusive in design, to roll plate up to 10-15 mm (1/2 inch) thick.
Accurate, fast, easy and intuitive, it is the most high-tech plate roll for “light gauge” in the market.
The most common design in the industry, with the top roll fixed, and the two side rolls that move up and down to pre-bend the edges, and to roll the plates
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