CNC Four-Roll Plate Rolling Machines for Duct, Fan Casings and Cylinders
Hydraulic model up to 6 mm carbon steel and 1500 mm wide; full-servo model for thin sheet up to 1250 mm wide
Overview
What it does
A four-roll machine clamps the sheet between the top and bottom rolls and bends it with the two side rolls. Because the sheet is gripped, both ends can be pre-bent in the same pass and the plate does not slip, which leaves a shorter flat at the seam than a three-roll machine.
The hydraulic model drives all rolls hydraulically, with the clamping pressure set at the hydraulic station for each thickness and width. It rolls carbon steel up to 6 mm and stainless up to 3 mm, 1500 mm wide, for fan cylinders, blower housings and heavy round duct.
The full-servo model drives the top, bottom and both side rolls with servo motors under CNC control. It is meant for thin sheet in round duct, environmental ductwork and grain machinery, where repeatable diameters and a clean pre-bend matter more than raw force.
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Questions before you quote?
Send photos or drawings of your parts and we come back with the right configuration.
Ask on WhatsAppOptions to discuss
- Hydraulic or full-servo drive
- Plate width and thickness capacity to your work
- Stainless or galvanized surface protection on the rolls (to be agreed)
- Supporting arm for large diameters
What we need from you to quote
- Material, grade and the thickest and widest plate
- Smallest diameter at that thickness
- Typical batch size
- Site power supply
Related machines in our duct range
- Hydraulic Rolling Machine SBJY-1500B: rolls round duct from diameter 150 to 800 mm
- Roll Bending Machine SBW11G: manual rolls for light gauge round duct
Supply terms
Who supplies it. Taokron. We handle the inquiry, specification review, quotation, pre-shipment inspection, shipping and after-sales support from Melbourne.
Lead time. Lead time is not published for these machines. It depends on the configuration and is confirmed at quotation.
Warranty. Warranty terms are confirmed at quotation.
Commissioning. Remote support included; on-site installation engineer available on request, quoted per order.
CE. CE marking is confirmed at quotation for each machine.
Price. Each machine is configured to your parts, material and output, so there is no list price. Send your details and we quote that machine.
Price request
Ask for a quotation on this machine
Send the parts you make, the material and thickness, the size range and your output. Ryan Tao replies within 12 hours with a configuration, lead time and price. You can also send photos and drawings on WhatsApp +61 435 074 994.
Quotation for: CNC Four-Roll Plate Rolling Machines for Duct, Fan Casings and Cylinders
Several machines or a complete line? Use the full inquiry form
Frequently asked questions
About this machine
Why four rolls instead of three?
The sheet is clamped between the top and bottom rolls, so it does not slip and both edges can be pre-bent without turning the plate round. That gives a rounder cylinder with a short flat at the seam.
Which model do I need?
For carbon steel from about 2 to 6 mm and fan casings, the hydraulic model. For thin round duct and light cylinders where speed and repeatability matter, the full-servo model.
What stainless thickness can the full-servo model roll?
The catalogue lists cold-rolled sheet from 0.5 to 1.5 mm and stainless sheet, but its stainless figure is not consistent across its documents. Send your grade and thickness and we confirm it at quotation.
What lead time and warranty apply?
Lead time and warranty for this machine are confirmed in the quotation for your configuration.
Is the machine CE marked?
CE marking is confirmed at quotation. Tell us the destination country and we check what documents come with the machine.
Welding and cutting automation
