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CNC 4 Roll Plate Bender

4 Roll Plate Bending Machine

Exciting Plate Roll Bending Process of BIT’s 4-Roll Plate Bending Machine
4-roll plate bending machine
4-roll plate bending machine

4 Rolls Plate Rolling Machine PR4

The CNC PR4 is the most precise and easiest-to-use full pre-bending 4-roll plate bending machine. Moreover, thanks to their production methods, the PR4 bending rolls can be effectively controlled through numerical control systems.

The CNC PR4 series 4 roll plate bending machine has been refined over the years through extensive research and development and is considered one of the finest plate rolling machines available on the market worldwide, which are particularly suited for large sheet metal thicknesses. The advantage of this design is that the bending process is done in one operation. They are considered the most cost-effective investment for high productivity requirements for rolling plates from 5 to 150mm in thickness up to a useful length of 18000mm.

  • Bending Thickness: 5-150mm
  • Pre-bending Thickness: 4.4-120mm
  • Roller’s Working Length: 1000-6000mm

Read More: Best Buyer’s Guide for 4 Roll Bending Machine

Features

In all models of BIT’s PR4 4 roll plate rolling machines, the top and lower rolls are the main driving rollers, which provide torque for sheet rolling through their rotation; the position of the top roll is fixed, and the lower and side rolls can be moved up and down, the rotation of all rolls is hydraulically driven. The lifting and lowering of the lower and side rolls, as well as the overturning and resetting of the unloading bracket of the top roll, are all driven by the oil cylinder. Each rolls bearing body and oil cylinder are installed inside the equipment.

The rolling processing method of PR4 plate rolling machines allows the cylindrical ferrule to be made in one pass. Compared with the symmetrical 3-roll bending rolls, it can directly pre-bend the end of the plate without the aid of other equipment and molds, and the remaining straight edge is small. Compared with the asymmetric 3-roll bending machines, they can make cylindrical ferrules at one time. Bending the workpiece into a workpiece not only improves the efficiency and ensures the quality of the workpiece, but also has a simple process and convenient operation.

4-roll plate bending machine
4-roll plate bending machine
4-roll plate bending machine
4-roll plate bending machine
4-roll steel plate rolling machine
PR4 4-roll steel plate rolling machine

Read More: CNC Plate Bending Machine, Steel Plate Roll Manufacturer

The working principle of 4-roll bending machine

Plate rolling process

  1. Put the metal plate parallel and perpendicular to the other roll;
  2. Clamp the metal plate with a pre-set clamping force(top and lower rolls);
  3. The metal plate moves backward through the top and lower rolls, and runs to the tangent point as far as possible, leaving a little straight line at the end;
  4. Side roll rise to bend the edge of the metal plate (pre-bending);
  5. By feeding the metal plate by the rotation of the gripping roll(top and lower rolls), the round shape is rolled;
  6. Lower the front roll and raise the other side roll;
  7. Rotate the rolls to roll out a circle of the required diameter;
  8. Correcting a circle is an automatic process that holds the plate in a continuous forward motion to achieve the desired result.

Read More: Bending Machine Wikipedia

PR4 Series 4 Roll Plate Bending Machine Parameters

ModelMax Bending Thickness
(mm)
Pre-bending Thickness
(mm)
Roller Working Length
(mm)
Plate Yeild Limit
(Mpa)
Top Roller Diameter
(mm)
Bottom Roller Diameter
(mm)
Side Roller Diameter
(mm)
Main Power
(Kw)
Length*Width
*Height(L*W*H)
Weight
(T)
PR4-42043.5205024516014012034600*1100*11004300
PR4-42543.5255024519017015045150*1300*14005000
PR4-43043.531002452101901705.55650*1420*14006300
PR4-620
¼” Plate Roller
65205024519017015044650*1300*14004800
PR4-625
¼” Plate Roller
6525502452101901705.55150*1420*14005800
PR4-630
¼” Plate Roller
6531002452302101907.55860*1430*14007000
PR4-820
¼” Plate Roller
86.520502452101901705.54650*1420*14005600
PR4-825
¼” Plate Roller
86.525502452302101907.55250*1500*14006300
PR4-830
¼” Plate Roller
86.53100245270250210115750*2130*20009500
PR4-102010820502452302101907.54700*1420*14005800
PR4-10251082550245270250210115270*1420*14006500
PR4-10301083100245300270220115700*1500*15008800
PR4-1220
3/8″ Plate Roller
12102050245270250210114770*1520*21306500
PR4-1225
3/8″ Plate Roller
12102550245300270220115200*1500*15008200
PR4-1230
3/8″ Plate Roller
12103100245330300240115770*1900*188013500
PR4-162016132050245300270220114700*1500*15007500
PR4-162516132550245330300240115550*1840*182012000
PR4-163016133100245360330250156300*2000*205017000
PR4-202020162050245330300240114700*1900*200012000
PR4-202520162550245360330250155800*2000*205015000
PR4-20302016310024539036030018.56500*2250*255023000
PR4-252025202050245360330250155300*2000*205014000
PR4-25252520255024539036030018.56250*2160*235022500
PR4-253025203100245430390330227000*2300*250030000
PR4-30203025205024539036030018.55000*2160*235021000
PR4-302530252550245430390330226500*2300*250027000
PR4-303030253100245460420360307300*2600*270033000
PR4-352035282050245430390330226000*2300*250025000
PR4-352535282550245460420360306800*2600*270031000
PR4-353035283100245510460390377600*2800*290038500
PR4-402040322050245460420360306300*2600*270029000
PR4-402540322550245510460390377100*2800*290035000
PR4-403040323100245550510420458000*3100*320045000
PR4-452045362050245510460390376600*2800*290033500
PR4-452545362550245550510420457500*3100*320042000
PR4-502050402050245550510420457000*3100*320038000
PR4-503050403100245610560480558800*3600*380065000
PR4-6030604831002456706205207510000*4300*460090000

Read More: Best Guide to Plate Rolling Process: Formula, 2 Tips, 11 Keys