High-Quality Steel Plate Bending Machine Manufacturers Factory Price Sales

Plate Rolling Machine

CNC Automatic 3-Roll Double Pinch, Variable Geometry, and 4-Roll Plate Roller;
Bending Thickness: 6 up to 350mm; Working Length: 1000 up to 12000mm.
High-strength and large-torque design; Extra-wide self-aligning bearings; Cooling and heating for the hydraulic system; Transverse and longitudinal corrective top and side supports.

PR Series CNC/NC Plate Bending Machine

Expert in Hydraulic Plate Rolling Machines. We Have Over 30+ Years of Manufacturing Experience in Plate Bending/ Rolling Machines: Hot Selling 3, and 4-roll CNC Plate Roll Machines.
Established in 1968, BIT is a Chinese leader in plate-rolling technologies. Our commitment to innovation has positioned us as a driving market force in metal bending technology areas, including profile bending, plate rolling, tube/pipe bending, and aluminum bending equipment.

PRV Variable Geometry Heavy Plate Rolling Machine

PRV Variable Geometry Heavy Duty Plate Rolling Machine

Plate Rolling Capacity:
Bending Thickness: 6-350mm;
Working Length: 1000-12000mm.

PRV Variable Geometry 3-Roll Heavy Duty Plate Rolling Machines with the variable geometry design, the horizontal position of the two lower rollers can be adjusted independently, the horizontal movement adopts hydraulic transmission, and the center distance can be adjusted, while the top roll moves on a vertical axis. PR4 has the function of pre-bending the end of the plate, which can feed the metal plate at one time, and can complete the pre-bending of the plate end and the rolling of the workpiece without turning around.

PRV Variable Geometry 3-Roll is easy to operate, easy to maintain, and has high rolling precision. It is an advanced and practical heavy plate rolling equipment.
PRV full hydraulic plate rolling machine, the oil cylinder adopts a structure of one up and one down.

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Debugging Pltae Rolling Process of Ø9000mm Wind Tubular Tower

Top 9 Pros of BIT PRV Heavy Plate Roller

The work roll bearings all adopt extra-wide series spherical roller bearings.
The upper roller press down adopts conjoined double hydraulic cylinder drive technology, one up and one down arrangement.
Automatic leveling of upper roll movement, synchronization accuracy ±0.2mm, and there is a balance mechanism at the end of the upper roller to facilitate the unloading of the workpiece;
The position between the two ends of the two lower rollers can be adjusted independently (cone roll-bending function), the horizontal movement adopts hydraulic transmission, and the center distance can be adjusted (variable geometry), with pre-bending and symmetrical rolling processes.
3 rollers are independently driven: all rollers are driven by independent hydraulic motors and planetary reducers.
The hydraulic system is independent from the machine body, which is convenient for maintenance, and equipped with cooling and oil temperature heating devices.
Mobile console and remote control control, easy to operate; Safety interlock device, safer operation;
Auxiliary conveying and feeding roller table, radial and axial steel plate alignment function, improve working beat.
Simple operation, convenient maintenance, high rolling precision, advanced and practical.

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PR4 CNC 4 Roll Steel Plate Rolling Machine

PR4 CNC 4 Roll Heavy Steel Plate Rolling Machine

Plate Rolling Capacity:
Bending Thickness: 5-280mm;
Working Length: 1000-9500mm.

BIT offers a very powerful, hydraulic 4-roll PR4 series plate rolling machine with CNC controls. PR4 is a unique machine for rolling plates with high precision and high-efficiency advanced plate roller equipment.
BIT PR4 series steel heavy 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 is particularly suited for large sheet metal thicknesses.
PR4 CNC hydraulic double-drive four-roller plate rolling machine has an advanced and reliable structure and sufficient rigidity. The key parts such as the work roll are selected reasonably, manufactured with precision workmanship, excellent in performance and precision retention, suitable for long-term continuous processing, stable and reliable in operation control, and easy to operate.

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Pr4 Automatic 4-Roll Plate Rolling Machine Production Line

Major 7 Advantages

Advanced and reliable structural design: The whole machine has sufficient rigidity and a long precision retention period; the frame, bed, base, etc. adopt three-dimensional finite element analysis, and are annealed after welding Treatment to eliminate residual stress.
The double drive of upper and lower rollers: The upper and lower rollers of the PR4 plate bending machine are the main driving rollers, and the transmission mode is driven by hydraulic motor acceleration and reducer.
High-precision auxiliary transmission for rolls: The lifting, loading, and unloading of workpieces are controlled by hydraulic cylinders. The speed is slow when there is a load, and it can be raised and lowered quickly when it is empty or lightly loaded; Guided by high-precision linear slide rails and proportional servo valve control.
Optimized upper roll design: The load factor of the maximum pressure of the upper roll is 0.7 in the design to pre-set and compensate for the deformation and deflection of the upper roll.
Automatic T&F Plate Bending Machine Control Expert System (ABMCES): The user only needs to input the parameters of the rolled workpiece into the human-computer interaction interface of the equipment.
Stable hydraulic system: The pressure of the pipeline system and oil cylinder is designed according to 31.5Mpa, while the actual operating pressure is about 25, and the displacement synchronization accuracy of the upper roller can reach ±0.2mm.
Reliable and effective lubrication system: volumetric lubrication system, parallel control of each lubrication point, independent oil lubrication, accurate oil supply. The centralized lubricating and oiling system can lubricate regularly, at fixed points, and in a quantitative manner during mechanical operation.

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PRT NC Heavy Duty Steel Plate Rolling Machine

PRA Steel Plate Rolling Machine

PRS Steel Plate Rolling Machine

Other Sheet Metal and Steel Heavy Duty Plate Rolling Machines

BIT also manufactures four other types of high-quality plate rolling machines that can be used to roll bending sheet metal and steel heavy plates, Plate Rolling Capacity: Bending Thickness: 20-200mm; Bending Width: 1000-10000mm.

PRT NC Heavy Steel Plate Rolling Machine

In the last century, the technology of KURIMOTO, LTD., Japan was introduced to produce. Compared with the PRV series variable geometry plate rolling machine, its plate rolling capacity is slightly weaker, but the cost is lower than that of PRV.
Plate Rolling Capacity: Bending Thickness: 50-200mm; Pre-bending Thickness: 40-160mm; Bending Width: 1000-10000mm. High rolling power combined with maximum pre-bending precision: PRT steel heavy plate rolling machine is a series of top roll horizontally and vertically movement variable geometry 3-roll plate bending machines at the highest level of its category by performance and versatility.
PRT 3-roll bending machines designed, manufactured, and marketed by BIT deliver performance equivalent to that obtained with the more expensive 4-roll plate bending rolls and are therefore ideal for medium-heavy duty machining. More

PRA Initial Pinch 3 Roll Steel Plate Rolling Machine

Plate Rolling Capacity: Bending Thickness: 2-6mm; Pre-bending Thickness:2-6mm; Bending Width: 1000-2000mm; PRA initial pinch 3-roll steel plate rolling machines ensure you get excellent results with a single operator thanks to its ease of use feature, with a familiar asymmetrical construction, providing a simple and inexpensive approach for thin sheet metal bends. The PRA 3-roll bending machine is the best solution for bending plates with thicknesses between 2 mm and 6 mm and widths from 1000 mm to 2000 mm. More

PRD 3 Roll Double Pinch Steel Plate Rolling Machine

Plate Rolling Capacity: Bending Thickness: 4-30mm; Pre-bending Thickness: 3.5-25mm; Roller’s Working Length: 2000-3000mm. The upper roller of the PRD double pinch 3-roll steel plate rolling machines is fixed and rotated, and the two lower rollers are respectively lifted and lowered around the fixed center arc. The two lower rollers can be easily adjusted through the CNC control system to form a symmetrical three-roller plate rolling machine type, which means that it has the function of a symmetrical 3-roll plate rolling machine at the same time. More

PRS 3-roll Pyramid Steel Plate Rolling Machine

Plate Rolling Capacity: Bending Thickness: 4-40mm; Bending Width: 1500-3000mm; Top Roller Dia.: 150-500mm. PRS pyramid steel plate rolling machines are designed to cater to the basic requirements of bending & forming metal plates, PRS plate rollers belong to 3-roll symmetrical mechanical structures. The top roll moves up and down at the central part of the two lower rolls. Screw nut and worm gear both driver roller of transmission. Two lower rolls act as main driving rollers. Through the meshing, they are able to rotate between the output gear of the gearbox and the lower roll, so as to supply the torque to the bent plate. PRS plate rolling machine does well in compact structure, easy operation, and convenient maintenance. More

3 roll plate rolling machine — PRV 300×3500 Heavy Duty Plate Rolling Machine

What is a Steel Plate Rolling Machine? The Plate Rolling Machine (also named Plate Roller, Plate Bending Machine, and Bending Rolls) is a device for the radial forming of flat sheets. The Hydraulic/Mechanical Plate Rolling Machine works similarly to a Profile Bending Machine. However, its design is much simpler.
The Plate Rolling Capacity of CNC, PLC Steel Plate Rolling Machine:: Bending thickness from 2.00mm to 350.00mm, plate rolling width from 1,000.00mm up to 12,000.00mm.

Six Types of Steel Plate Rolling Machines

Plate Bending Machines are available in a wide range. The smallest devices are table machines with manual operation by a hand crank. The largest Plate Rollers are found in shipyards and can bend sheets several centimeters thick, for example for ship armor.

There are 6 types of plate rolling machines currently on the market. Their roll-bending work principle is the same, but the structure is different. Of course, the manufacturing cost, efficiency, and precision will definitely be different:

Type 1: Initial pinch bending rolls
Type 2: Double pinch bending rolls
Type 3: Pyramid bending rolls
Type 4: Top roll variable geometry bending rolls
Type 5: Variable geometry bending rolls
Type 6: 4-roll plate bending machine

Benefits and Applications

The initial pinch bending rolls belong to the asymmetric plate rolling machine, which can be pre-bent at one end, which means that the other side needs to be removed for work pre-bending, and the work efficiency is not as good as that of the double pinch bending rolls.
Double pinch bending rolls can be a 3-roll or 4-roll plate roll available in light to very heavy capacities. Double pinch bending rolls can prebend both plate-ends without removing the workpiece there increasing work efficiency. Four-roll plate rolls generally are the only equipment with CNCs.
The pyramid bending rolls are rarely used in cutting-edge facilities. No pre-bending capability, which means long unbend flats and not as user-friendly as other types of plate rolling machines. The very low investment cost is their only advantage.
Variable geometry and PRT top roll horizontal and vertical movement 3-roll plate rolls are built to handle medium to extremely heavy plate rolling applications. Easy-to-remove end yokes can make material removal a quick process.
A machine of this type works well over a wide range of material thicknesses.
The lower roll horizontal movement (PRV 3-roll variable geometry bending rolls) or top roll horizontal and vertical movement(PRT 3-roll plate rolls) increases the offset distance from the top roll and in so doing delivers a distinct mechanical advantage in bending.

Working Principle of Pyramid 3-Roll Plate Rolling Machine: 1 – **top roll**. 2 – **2 lower rolls**. 3 – **metal plate**

Working Principle of Pyramid 3-Roll Steel Plate Rolling Machine

Pyramid 3-roll plate bending machine with three work rolls in a triangular arrangement.

There is a top roll (left image: 1) in the middle symmetrical position of the 2 lower rolls (left image: 2). The upper roller is passive and can be adjusted up and down in the vertical direction. Apply pressure to get different degrees of bending. The lower rollers are distributed horizontally, installed in fixed bearings, and rotated in the same direction and at the same speed by the motor through the gear reducer.

When working, the metal plate is placed between the top and lower rolls, the upper roll is pressed down, and the lower rolls are rotated. Under the action of pressure and friction, the metal plate is bent uniformly at three consecutive points, thereby completing the roll forming.

The bending radius of the metal sheet is determined by the pressing amount of the top roll. The greater the pressing amount, the smaller the bending radius; otherwise, the larger the bending radius is.

Working Principle of Initial Pinch 3-Roll Plate Rolling Machine: 1 – **top roll**. 2 – **lower roll**. 3 – **side roll** 4 – **metal plate**

Working Principle of Pyramid 3-Roll Steel Plate Rolling Machine

Pyramid 3-roll plate bending machine with three work rolls in a triangular arrangement.

Working Principle of Double Pinch 3-Roll Plate Rolling Machine: 1 – **top roll**. 2 – **lower roll**. 3 – **side roll** 4 – **metal plate**

Working Principle of 3-Roll and 4-Roll double pinch Steel Plate Rolling Machine

The 3-roll and 4-roll double pinch Steel plate bending machines(Their power system is driven by hydraulic motors) are basically similar to the 3-roll initial pinch plate rolling machine, except that a side roll 3 is added on the other side, and the rolls on both sides move in a straight line or arc to the upper roll to adjust the radius of curvature of the plate rolling., and the sheet bending is handled by the rolls 3 on both sides respectively, so the remaining straight edges at both ends are very small and do not Pre-bending and U-turn roll-bending are required, and the entire roll-bending process can be completed directly.

The difference between the three-roll and four-roll double pinch plate rolling machines is that the three-roller machine does not have a lower roller 2, while the four-roller bending machine can be equipped with a CNC control system.

heavy plate rolling machine — PR4 280×3500 Heavy Duty Plate Rolling Machine

How to choose the right Steel plate rolling machine?

With the aim to best satisfy every application requirement, BIT’s line of various types of plate bending machines offers a simple and efficient means to roll your metal plate materials.

The best way to determine the best sheet or plate bending machine for the job is to find out what various machines can do. Remember, machine capacity is important, it must match your material, and most plate roll manufacturers can provide detailed capacity-versus-yield tables to assist you. There is also the pre-bending ability of the rolling machine is also very important, the pre-bending ratings are lower than the rolling capacities for any given machine.
You must be mindful when reviewing machine capacities that the maximum rolling capacity is usually expressed with the basic requirement of multiple rolling passes and very long unbent flats. You also must note the material thickness and width and equipment characteristics such as cylinder diameter, machine type, yield, and diameter of rolls.
By obtaining that information, you can properly size and select a plate roller to fit your particular bending application.
Of course, you can read our recommendations for plate roll bending application below, it will also provide a better reference:

The PRA initial pinch Sheet Metal Rolling Machine, PRD Sheet Metal Rolling Machine with a double pinch, PRS 3-roll pyramid bending roll, or PR4 four-roll pyramid bending roll will be bending for bending thin plates in a reliable and economical manner. For rolling thicker plates, BIT produces and offers three different models: PRT 3-roll bending roll with top roll variable geometry, PRV three-roll variable geometry bending roll, and PR4 four-roll pyramid bending roll.
Read More: How To Choose The Right Plate Rolling Machine?

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