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standard equipment, options & technical specifications

PCO Series Hydraulic 3-Roll Plate Bending Machines

PCO Manufacturing Range:

3' to 26' Long - 1/4" to 12" thick

PCO SERIES Built for medium, heavy to extremely thick plate applications.

What can you expect from the new PCO-Series rolls?

Expect a new state-of-the-art machine to give you more precision and more power than

anything in the industry.

Expect the best linear guiding system with anti-friction sliding technology and

proportional-controlled digital parallelism system.

All are designed to capitalize on the new machines enhanced performance and capacity.

Providing you a solid, stable result with every rolling pass

Strong Design & Special Features - Unrivaled Cone Rolling Capability

More Productivity…More Precision

Strong Design & Special Features - Unrivaled Cone Rolling Capability More Productivity,More Precision
PCO Series  3-Roll Variable Axis Plate Bending Rolls
Infinitely variable speeds Infinitely variable bending pressure

Infinitely variable speeds

Infinitely variable bending pressure

Infinitely variable speeds Infinitely variable bending pressure -2

Rolls length:

from 20 inches up to 26 Ft

Plate thickness:

from 1/8 inch up to 10 inch

PCO Overview

Absolute pre-bending precision is one of the main features of our PCO roll.

All three rolls move independently, the lower rolls move on a horizontal axis, the upper roll moves on a vertical axis. This makes it possible to adjust the distance between the bending points to roll Heavy or Small thickness plates.

The PCO series plate roll gives you the ability to perfectly prebend any plate, working “like a press” and always maintaining the plate horizontal that allows you to run rolling operations in complete safety.The PCO series is also equipped with the lastest generation of brakes that avoids any plate slipping.

Better Design For Better Performance.

Better Design For Better Performance.

Synchronized power

High torque and Hydrotronic control

The best pre-bending

with the maximum rolling precision.


PCO Features


PCO Rolling Sequence


  • A perfect synthesis of bending precision and rolling power is provided
    with our PCO Series Plate Rolls

  • Plate thickness range on our PCO Variable Geometry Machines allow rolling of
    thicker plate versus a four roll unit of a similar prebending rating. 

  • The PCO Variable Translating Geometry incorporates the best features of single pinch,
    double pinch and true pyramid type rolls into one single efficient machine


  • Both ends of the plate are pre-bent without need for removal from the machine

  • More secure pre-bending operation over a four roll geometry

  • Lower rolls are equipped with heavy duty brakes to eliminate risk of back travel

  • Sheet tail maintains a flat or low incline in pre-bending operations, unlike 4 roll designs

  • Overpressure risk is minimized since the top roll thrust is downward like a press

The PCO allow to change the geometry between the bending rolls and this give at the operator the maximum flexibility to adjust the machine for a wide variety of rolling works (pre-bending, cone pressing, rolling, shell calibration etc....)

Variable Geometry Increased Flexibility

Variable Geometry

Increased Flexibility

Lower Rolls Variable Centerline

Lower Rolls

Variable Centerline

The possibility to adjust the distance between the two lower rolls increase the flexibility and the thicknesses range the can be rolled on the machine:

This allows to roll heavy wall thickness plates (max. centerline distance) while with the lower rolls very close each other (min. centerline distance) you will obtain an optimal plate feeding for thin plates.

PCO Technology

PCO Technology

Everything is under control
Are you loosing production hours and days checking around the machine for which connection wire, PLC card, push-button or fuse are faulty?
Forget these kind of problems with PARMIGIANI's
i-Diagnostic system for immediate fault detection.
The i-Diagnostic is a revolutionary diagnostic system that supervises all the main functions of the machine, with an easy to use and intuitive control panel interface.
From the touch-screen you can control almost all electrical connections around the machine; all PLC modules; all micro-switches (You can check also if they are engaged /energized or not) and more.... 
a revolution in customer support

Instantaneous fault detection instead of troubleshooting 
Detailed information on type and location of the fault

Instantaneous fault detection instead of troubleshooting
Instantaneous fault detection

VBH Technology


PPS Hydrotronic
Parrellelism Graph


The PPS is the most advanced parallelism system available on the market today.
The rolls parallelism in a plate bending machine is a key factor for production accuracy.
The capability to maintain precision over years of performance is also another critical point.
For this reason we employ the best of today's available technology with digital control systems and hydraulic flow control via proportional valves.
We have designed a system resistant to wear that will give you years and years of trouble free performance, keeping the machine positioning precision just like your first day of operation!
The top and bottoms rolls parallelism is fully controlled by a digital “high speed” FIELD BUS system.
The package includes a set of hydraulic proportional valves with high performance digital control cards, matching  the high speed of the FIELD BUS system.
This digital technology (the loop control is 20 times faster than PLC-based electronic controls) joined with the hydraulic proportional valves, provides a parallelism precision of about 0.1 mm.

Lifetime precision

Digital control technology with hydraulic proportional valves
Parallelism precision 0.1 mm



Plug and play technology

Do It by yourself
"Assemble and plug in – that’s all!"
Quick and simple plug connections replace elaborate wiring.
• Avoids wiring errors
• Shortens start-up time
• Quick swapping of cables

The wiring of the machine is achieved by Plug and Play  connectors and digital distributors.
The cabling system with connectors is more reliable over time, resistant to environmental contamination and vibration and allows for quick and easy maintenance.
With our FACILE® Plug and Play system you can change a wiring connection (to the hydraulic valves or the encoders or potentiometers, to a micro-switch etc…)  with pin plug connector, without unscrewing any electrical wire.
Same procedure for all PLC modules! Without the need of a skilled electrician!
With the purpose of increasing your independence from third parties all software are loaded in static memory cards, (like the ones used in digital video cameras) and not in volatile Eprom!  This means that you will almost never lose the software, even when you need to change the PLC unit.
Our plug-play system is a military approved technology!

FACILE Plug & Play Terminal
Facile Plug & Play
FACILE Connector

Digital control technology with hydraulic proportional valves
Parallelism precision 0.1 mm

Infinitely variable adjusting speeds
Infinitely variable bending pressure

The hydraulic system is the operative core of your VBH: it runs everything from the bending rolls drive to the bending rolls movement, tilting and all other machine attachments.
This is why we invested a lot in research and development to give you a smooth, precise and highly responsive system.
Through digital controls the system is managed by dedicated hydraulic proportional valves (pressure and flow) that allows you to select the most convenient speed during each production step (vs. other brands machines that give you only one or two selectable speeds) and the maximum central lower roll pinching force in order to adapt it  to the characteristics of the plate being worked.
The possibility to select low pressures for thin plates widely extends the range of the machine.
With infinitely variable pressure and speed adjustment the operator will have full control of the process in any bending situation.


Hi-Tech Logo
Hydraulic Manifold -2
Hydraulic Manifold
PCO Controls

PCO Controls

Everything is under control
Dedicated controls from PARMIGIANI for plate rolling cover an entire range of applications.
All software is developed in-house by Parmigiani technicians with great experience in plate rolling. From the simple, compact DIGIMATIC control to the STRADIVARI (unlimited number of axis) there's a PARMIGIANI control for nearly every application.


Parmigiani NC and CNC controls are
100% in house developed


Controls are an essential requirement for executing precision rolling applications. Select the "SAVE&BEND" with its 10.4” display or the "FAST" with a 15” display or the "STRADIVARI" with a 19" display. Our controls function just like a tablet with touch-screens: navigating through the options is simplified via menus, shortcuts and with context-sensitive help.

  • 7” full color display, touch – screen

  • N° 6 digital read-outs, for Central Lower  and  Side rolls. With 2 digital read-outs for each bending roll. The operator can read exactly the inclination of the roll during conical bending.

  • N° 1 digital read-outs, for Central Lower roll pinching pressure

  • 7 Controlled Axis

  • It’s possible to create different programs, saving the pinching pressure of the lower roll and the positions of Lower and Side rolls for the automatic positioning (step by step)

  • Storage Memory Capacity: up to 500 programs of 26 steps each.

Digimatic CNC Control
  • PARMIGIANI “SAVE & BEND”: NC Control type
    This is an entry level NC with 9 controlled axis,  for fully automatic working mode.

  • 10.4” color display, touch–screen

  • 9 Controlled Axis (can be upgraded up to 16 axis)

  • Two methods of programming: Editing and Play-back modes

  • Storage Memory Capacity: up to 1000 programs of 50 steps each.




  • PARMIGIANI “FAST”: CNC Control type 
    with Automatic program mode for single radius shapes: the control automatically creates the complete bending program, simply entering the shell data (radius, thickness, width, type of material), with all the sequence for obtaining the required shape. If necessary the program theoretically calculated by the control can be optimized by the operator.

  • 15” full color display, touch – screen

  • 9 Controlled Axis
    (unlimited upgradeable number of axis)

  • Three methods of programming:
    Aided, Editing and Play-back modes

  • Storage Memory Capacity: up to 5000 programs.

FAST CNC Control
PCO Options

PCO Options

Large Plate Roll
  • Rolls induction hardening and heat treatment.

  • Cone bending device.

  • Fully hydraulic upper plate support device.

  • Fully hydraulic side plate support devices.

  • Infinitely variable rolling speed.

  • Infinitely variable bending pressure.

  • Heat exchanger for cooling the hydraulic oil.

  • Increased (Turbo) rolling speed.

  • Extended rolls for assembling profile bending dies.

  • Set of profile bending dies.

  • NC control: SAVE&BEND.

  • CNC control: FAST a STRADIVARI 3-R.

  • Wireless control.

  • Special operating voltage or special electrics.

  • Remote assistance via modem.

Options and Accessories

Cone Rolling
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Equipment Cost:

In Partnership with
Crest Capital Equipment Leases