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Category: Other
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Four Roll Bending Machine: Pre-Bend and Roll Plate up to 25 mm Thick and 3500 mm Wide in One Setup

Round tanks, pressure vessels and pipes start as flat plate, and the quality of the shell depends on how cleanly that plate is rolled. The SBFM Four Rolling Bending Machine is a 4 cylinder roll bending machine for 25 x 3500 mm, supplied with a lift and a side support arm, as stated in the product image. Four rolls let the operator pinch, pre-bend and roll the plate without taking it out of the machine.

Quick Product Facts

• Product: Four Rolling Bending Machine (4 cylinder roll bending machine)
• Manufacturer: SBFM Machinery, Konya, Türkiye
• Category: Other
• Capacity: 25 x 3500 mm, as stated in the product image (normally plate thickness x working width; confirm with the manufacturer)
• Model marking: 4R SBS 25 - 3500, visible on the machine side
• Included: Lift and side support arm
• Process: Pre-bending and rolling of plate into cylinders and arcs

What Is a Four Roll Bending Machine?

A four roll plate bending machine uses two central rolls to pinch the plate and two side rolls to bend it. Industry sources explain that this allows the plate to be pre-bent at the end, then bent through the whole body in a single direction and in one pass. The plate stays squared and does not slip during the cycle.

The result is a faster and easier workflow than with a typical three roll machine. Sources also note that a four roll machine means no need to remove, turn and re-insert the plate, and that the flat zone at the plate edges is minimised.

Lift and Side Support Arm

The caption of the product image highlights that the machine includes a lift and a side support arm. In the photo, a tall column with a yellow-and-black hazard striped arm stands behind the rolls. These supports hold heavy and long plates in position as they enter and leave the rolls, so the operator does not have to fight the weight of the workpiece.

In front of the machine, two large black rolls sit inside a light grey body with blue stripes. The model marking 4R SBS 25 - 3500 is visible on the side of the machine, and a person stands at the control console at the right end, showing how a single operator can run the machine.

Key Features and Benefits

• Four-roll design; pinches, pre-bends and rolls in one pass
• 25 x 3500 mm capacity; as stated in the product image
• Lift and side support arm; for heavy and long plates
• Reduced flat ends; pre-bending of both ends of the plate
• Single operator; easy control from the machine console
• Hazard-marked arm; for safer handling
• Robust body; built for continuous plate rolling work

Applications

• Tank and tanker shells
• Pressure vessels and boiler shells
• Silos, hoppers and storage tanks
• Pipes, tubes and ducting from plate
• Wind tower and structural sections
• Machine covers, drums and industrial cylinders

Tips for Perfect Cylinders

Make sure the plate edges are clean and, for thicker plate, bevelled before rolling. Square the plate against the rolls, pre-bend both ends and then roll the whole body, checking the diameter with a template. Rolls should be clean and aligned, and the machine settings should match plate thickness and material. Always keep within the stated capacity and support long plates with the side arm.

Part of a Complete Sheet Metal Forming Range

SBFM Machinery has built sheet metal forming machines in Konya since 1998. Alongside this machine, our range includes hydraulic dishing presses, flanging machines, polishing machines for dished heads, profile and pipe bending machines and special corrugated and grooved rolls. That means a single partner can equip your workshop from tank heads to shells, rings and pipes.

Why Choose SBFM Machinery?

Machines are designed, cut, welded, machined, assembled and tested in our own facilities, and our quality policy rests on customer satisfaction. We believe we grow together with our customers, so we listen first and recommend the model that fits your work, not simply the largest one. Technical guidance and spare parts help keep your machine productive for years.

How to Choose the Right Machine

• Plate thickness, material and working width
• Smallest cylinder diameter you roll
• Lift, side support arm and loading needs
• Control level, console and safety features
• Daily output and plate weight
• Floor space, crane capacity and power supply

Maintenance for Long Service Life

Keep the rolls clean, check the hydraulic oil level, hoses and seals, and lubricate bearings and guides regularly. Inspect the lift, support arm and console cable. A simple preventive routine protects accuracy and extends machine life.

Frequently Asked Questions

What does 25 x 3500 mm mean? It is the capacity stated in the product image and normally means 25 mm plate thickness and 3500 mm working width. Please confirm for your material.

Why choose four rolls instead of three? Four rolls allow pinching, pre-bending and rolling without removing and turning the plate, which saves time.

How do I choose the model? Send us your plate thickness, width and cylinder diameter, and our engineers will recommend the right model.

Request a Quote on MachineWorld.biz

Ready to roll plate with confidence? Contact us at +90 542 479 69 00 or export@MachineWorld.biz, or explore SBFM machines on MachineWorld.biz and request your quote today.

Precise rolling. Reliable production. Request a quote today.