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A hydraulic sheet folding machine with a 4100 mm bending length, built for medium thickness plate in aluminum, steel and stainless steel.
Bending is one of the most frequently used forming processes in sheet metal work, and a reliable folder sits at the centre of the production line whether the job is edging and sealing a building curtain wall, producing ventilation duct flanges, or forming the sheet metal of chassis and cabinets. This machine is designed for the bending of medium thickness plate in aluminum, steel and stainless steel, and is aimed at shops that need high accuracy and high efficiency in volume production.
The effective bending length of 4100 mm covers the great majority of sheet sizes used in metal processing, so standard aluminum veneer, galvanized steel or stainless steel sheet is bent and formed in one go. The machine handles copper, aluminum, alloys, carbon steel and stainless steel, and different upper and lower tooling can be combined for the required profile.
All Steel Welded Structure
The equipment uses a fully welded steel frame that has been through vibration aging treatment to eliminate internal stress, giving the frame sufficient strength and rigidity. Combined with the mechanical limit block and the torque shaft forced synchronization mechanism, the slider runs stably and reliably, which keeps the bending angle consistent and holds repeated positioning accuracy.
4100 mm Bending Length
The effective bending length of 4100 mm meets the processing needs of the great majority of metal sheets. Standard aluminum veneer, galvanized steel sheet and stainless steel sheet can all be bent and formed in one go, and the machine supports copper, aluminum, alloy, carbon steel and stainless steel.
Hydraulic Drive System
The hydraulic system uses imported hydraulic components together with a low noise internal gear pump, providing stable and long lasting bending power. The hydraulic drive makes the bending process smooth and free of impact, which protects the surface coating of the sheet and reduces bending marks.
Wedge Type Deflection Compensation
Long sheets tend to deflect in the middle during bending, which shows up as an angle deviation along the length of the part. The wedge type deflection compensation mechanism counteracts this deformation, so the bending angle stays consistent across the whole 4100 mm working length and accuracy is maintained on long panels.
Intelligent Control
The machine can be equipped with a CNC numerical control system supporting angle programming and automatic compensation. A grating ruler provides real time detection feedback and replication correction for full closed loop control, and the positioning accuracy of the slider reaches 0.02 mm. The bending angle, back gauge position and bending sequence are set on the touch screen, with multi step programming supported.
| Machine type | Hydraulic folding machine, synchronized |
|---|---|
| Automatic level | Fully automatic |
| Folding width | 4100 mm |
| Width of working table | 4100 mm |
| Folding angle | 0-125 degrees |
| Slider stroke | 120 mm |
| Throat depth | 230 mm |
| Nominal pressure | 100-800 kN, selected with the order |
| Material / metal processed | Stainless steel, alloy, carbon steel, aluminum |
| Raw material | Galvanized steel 0.3-2 mm; stainless steel 0.3-1.5 mm |
| Motor power | 8.5 kW |
| Hydraulic power | 7.5 kW |
| Core components | Bearing, motor, pump, gear, PLC, pressure vessel, engine, gearbox |
| Key selling points | High accuracy |
| Dimension (L x W x H) | About 5500 x 1550 x 1400 mm |
| Weight | 6000 kg (13227.74 lb) |
| Warranty | 2 years |
| Lead time | About 2 to 3 months |
| Outgoing inspection | Video outgoing-inspection and machinery test report provided |
| Place of origin | Hebei, China |
The frame is a fully welded steel structure carrying the lower bending beam and the folding beam along the full 4100 mm working length. The hydraulic power unit sits at one end of the machine, and the control cabinet is mounted at the opposite end of the bed.
Seen from the end of the bed, the sheet is clamped between the lower beam and the upper clamping beam before the folding beam swings it through the bending angle. The grey-green control cabinet on the side of the bed carries the main switch and the operator controls.
The long folding beam runs the full length of the machine. The torque shaft forced synchronization keeps the two ends of the beam in step, which is what holds a consistent angle along a full length panel.
The hydraulic power unit combines the oil tank, the internal gear pump, the valve block with its cooling fan and the drive motor, so the bending force is generated smoothly and without impact on the sheet surface.
Along the bed, the machined guide rail and its slide block position the moving elements, with the scale strip and the roller unit used for the back gauge setting on the lower beam.
Which materials and thicknesses can it fold?
Galvanized steel from 0.3 to 2 mm and stainless steel from 0.3 to 1.5 mm, and the machine also handles aluminum, alloy and carbon steel sheet.
What is the bending capacity?
The effective bending length is 4100 mm, the folding angle range is 0-125 degrees, the slider stroke is 120 mm and the throat depth is 230 mm.
How accurate is the machine?
The slider positioning accuracy reaches 0.02 mm with the CNC option, and the wedge type deflection compensation keeps the bending angle consistent over the full working length of long panels.
What does the warranty cover?
The machine carries a 2 year warranty. If a broken part cannot be repaired, a new part is supplied free of charge within the warranty period and the buyer pays the express cost; after the warranty period problems are solved through negotiation, and technical support is supplied for the whole life of the equipment.
How long does production take?
It usually takes two to three months.
Is after-sales support available in our country?
Yes. Advice is provided directly and skilled technicians are available across the world, so the equipment can be kept running.
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