R4C BENDING MACHINE

The uncompromising four-roller plate bending machine

Rouleuse de tôle à 4 rouleaux R4C

Anatomy machine

Requirement and rigour of the made in France

Whatever the bending machine type: two-, three-, or four-roller, we choose technical solutions and components that guarantee the reliability and efficiency of our machines.

The main characteristics are presented below.

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1/ POWER

One motor (gearmotor) per roller as standard. Our machines have been equipped with Danfoss motors for over 35 years. The rotation of the rollers is factory-synchronised by a hydraulic system that prevents any variation over time.

Benefits: maximum torque, optimised efficiency, synchronised speed, reliability.

Note: Our competitors only have one or two powered rollers as standard.

2/ LINEAR GUIDE SYSTEM

An incredibly useful technology, with no friction and excellent performance in all operating modes: cylindrical and conical rolling. It’s also a strategic choice for optimised prebending (on three- and four-roller machines)

Benefits: maximum efficiency of the hydraulic power, no wear.

Note: The planetary guide system used by our competitors is a low-cost solution

-> up to 30% loss of power and additional wear.

3/ PROPORTIONAL DISTRIBUTION

All our rollers are equipped with roller position and rotation control with proportional adjustment.

From the standard manually-controlled machine to the machine with a console and Danfoss proportional distribution, the rolling quality is controlled by progressive and very precise movements. 

The distributors mounted on our machines are exclusive Picot products developed with Danfoss.

Benefits: progressive movements, quality of sensitive  areas, ergonomic for the operator.

4/ ALIGNMENT SYNCHRONISATION

Since our first patent in the 1970s, we have always chosen:
> either hydraulic control (hydraulic valves on standard machines)

> or digital control of each cylinder to ensure perfect alignment throughout the life of the machine. Cone rolling is controlled by these same systems.

Position measurement and control are provided by absolute linear rules: no  need for calibration on start-up, and the part is saved even after an emergency stop or a power cut.

The coupled control lever simplifies movements and controls the synchronisation of the prebending rollers using just one hand. 

Benefits: efficient manufacturing process, precision movements, ergonomic for the operator.

5/ BEARING SYSTEM

All of our machines are equipped with bronze bearings that accept high loads during rolling operations.

This technology is unrivalled in terms of both its capabilities and its longevity! Greasing is centralised and requires no maintenance.

Note: ur competitors use roller bearings (more economical, but unable to withstand heavy loading).

6/ ROLLERS

The rollers are made of high-quality steel with selected, traceable properties.

> Custom curves.
> Polished finish Guaranteed not to leave marks on even the most sensitive materials.
> Induction hardening: hardness

50-60 HRC.

Benefits: custom production.

7/ ARCHITECTURE & DIAMETER

For better bending behaviour and to prevent the deformation of parts, our four rollers have the same diameter.

You can use the machine in three-roller mode to take advantage of the double-prebending configuration of the three symmetric rollers.

Thin sheets – symmetric rollers for tight tolerance – calibration of parts – rolling of welded parts.

Note: Our competitors’ lateral rollers have much smaller diameters – reduced capacity

8/ SYMMETRIC ROLLING

The chassis design is optimised for easy cone rolling. 

All our machines can be used in symmetric mode (three rollers without prebending roller) for even better performance and convenience.


Configuring your environment

Rolling assistance >