Fabrication Plate Rolling Machines, Metal Rolling Machines

4 Roll Plate Bending Machine – HR4W

4 Roll Plate Bending Machine – HR4W

4 roll plate bending roll machine – HR4W- DCRP double pinch with electronic side roll balancing offering the latest sheet & plate rolling technology high-speed roll positioning, choice of 3 CNC controllers.

Italian excellence’ – perfection without compromise



Why choose the 4 Roll Plate Bending Machine – HR4WR?

  • A Roccia HR4W-DCRP all hydraulic operation sheet & plate rolling machine offers the very latest plate rolling technology [patents are pending]
  • This HR4W-DCRP plate rolls technology gives production possibilities that are almost unlimited
  • ‘Italian’ excellence’ – perfection without compromise, its a fact!
  • Rolled dia = 5 times top roll dia, but at 60% of pre-bend capacity
  • Rolled dia = 1.3 top roll dia
  • High speed roll positional performance
  • The latest CNC technology – choice of 3 levels of CNC controller

The wide BASED ANGLED FRAME bulkhead construction is designed to bring increased stability to the whole structure, designed by ROCCIA engineers to absorb side thrust forces during plate rolling cycles.

A Roccia four roll bending machine utilises 2 driven rolls to ensure the rolling torque power transfer. This way a strong material grip is assured between top roll and lower roll with the material pinching system.

Single unit high torque hydraulic MOTORS/PLANETARY GEARBOXES are directly mounted onto each driving roll to ensure a smooth feed through of the plate, there is no loss of power normally associated with secondary transmissions, plus the added benefit of one less gearbox to maintain.

ROLL CAMBER CALCULATION. Roll camber is required to counter act roll deflection that occurs as bending forces are applied, so as to ensure a perfect closing of the longitudinal seam, it is a vitally important factor. If the camber is calculated incorrectly, the result will be, (1) a barrel shaped cylinder ie not closing perfectly along the longitudinal seam, gap in the middle, (2) an hour glass shaped cylinder, the longitudinal seam touching in the middle, but not at the ends.

ROLL DESIGN CALCULATION. It is the heart of the machines performance; it’s what makes a ROCCIA plate roll different from the competition.

ERGONOMIC CONTROL PANEL. As place your hands on the control console, you will immediately be aware that all the controls are exactly where you would expect them to be.

ROCCIA roll dimensioning camber calculation are done on sophisticated 3D cad software that produces all the critical data required for every step of the rolling process. Roll calculations are seldom to standard formulae, no, they are calculated around customer requirements, this being, material type, mechanical strength, material thickness, the rolls cylinder length dimension.

Only this way can we grant the performance and the precision of the plate rolling machine we manufacture for you.

Roccia engineers have designed a new and exclusive heavy duty CONE ROLLING DEVICE, that is mounted or bolted or positioned into the machine hard against the bottom roll shoulder to eliminate possible movement.

The MECHANICAL ADJUSTMENT OF THE PINCHING lower roll in counjunction with the powerful thrust of the 2 side bending rolls during the pre bend cycle ensures a minimal flat along the longitudinal edge.

ROCCIA plate bending rolls use SWING ARM TECHNOLOGY for the movement of the side bending rolls. Each swing arm is manufactured from a solid steel profile this ensures rigidity.
This design solution offers a smooth friction free movement for each side roll, a friction less system has the advantages of; more pre bending power, a maintenance free longer life unit.

CLEANLINESS AND ORDER in the hydraulic and electrical parts of our machine express the attention to detail we put into our product.

Striving to achieve perfection requires constant attention to many details


  • Ongoing excellence in design technology
  • Vigilance & strict inspection monitoring during fabrication & machining procedures
  • The use of proven and reliable components from reliable international suppliers
  • A team of focused design engineers listening and interacting with customers requirements
  • A focused team of build & service technicians
  • Reliable and on going technical support, with a UK based service team at JPS Machinery Ltd
  • Model frame ‘R’ – No expensive pit required , benefit from the new frame construction design ‘R’ [Patent Pending]. This design maintains the optimum material loading height at circa 800 / 1000mm  – big savings due to no pit costs

All Sheet Metal Rolling Machines are fully supported by our service team,
probably the largest independent dealer service team in the UK.
Experienced, reliable, professional.

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