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PREF Group provides CNC and hydraulic press brake machine for high-precision sheet metal bending, our machines range from 30T to 12000T capacity and are widely used in steel fabrication and industrial manufacturing.
A tandem press brake uses two synchronized press brakes to bend long parts that exceed the practical capacity of a single machine. It can also allow the machines to work separately when long-part production is not required.
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The CNC controller is the central control unit of the tandem press brake system. It manages bending programs, axis movement, backgauge positioning, crowning compensation, safety signals, and synchronized operation between machines.
High-quality controller options such as Delem, ESA, and Cybelec can support efficient bending-cycle calculation, 2D or 3D graphic programming, angle correction, material data management, and multi-axis control. For tandem bending, the controller must also coordinate both press brakes so long workpieces can be bent with stable timing and repeatable accuracy.
The hydraulic system uses electro-hydraulic servo synchronization to provide stable bending force and accurate ram movement. It supports strong anti-eccentric-load capability, high synchronization accuracy, and reliable pressure control during heavy or long-sheet bending.
System pressure can be adjusted according to practical bending requirements. For tandem applications, hydraulic stability is especially important because both machines must maintain consistent force output and ram position during the same bending cycle.
Servo motors provide high dynamic response, accurate movement control, and improved energy efficiency compared with traditional drive solutions. They help reduce operating cost while improving positioning performance and production efficiency.
Depending on configuration, servo motors can be used for key axis movement, backgauge positioning, and synchronized control. Stable servo performance helps the tandem system respond quickly to program commands while maintaining bending accuracy.
The oil pump is built for stable hydraulic oil delivery and long service life. High-strength construction, internal noise reduction design, and good resistance to oil contamination help maintain reliable operation under continuous bending conditions.
For long workpieces and higher tonnage applications, stable pump performance supports consistent hydraulic pressure and reduces the risk of abnormal movement during repeated production cycles.
The backgauge system uses ball screws, linear guide rails, and servo-controlled transmission to improve positioning accuracy and repeatability. Compared with basic screw-rod structures, this configuration provides smoother movement and better long-term precision.
For tandem bending, the backgauge must support accurate sheet positioning across a longer working length. Optional multi-axis backgauge configurations can be selected according to part complexity, flange depth, and production efficiency requirements.
Reliable electrical components help maintain stable signal transmission, strong anti-interference performance, and safe machine operation. The electrical cabinet should be arranged for clear wiring, easy inspection, and convenient maintenance.
For tandem systems, electrical stability is more demanding because two machines need coordinated control, synchronized feedback, safety interlock, and accurate communication during each bending cycle.
Crowning compensation corrects ram and table deformation during bending. The system calculates compensation according to bending force, workpiece length, tooling condition, and machine deformation characteristics.
For long parts, crowning is essential for keeping the bending angle consistent from the center to both ends of the workpiece. A well-matched crowning system helps improve straightness, reduce angle deviation, and improve final part quality.
Press brake tooling determines the bending angle, inside radius, flange shape, and final forming quality. Correct punch and die selection should be based on material type, thickness, bending length, V-opening, and required part geometry.
For tandem press brakes, tooling consistency is critical. When two machines bend one long workpiece together, tooling height, segmentation, alignment, and clamping accuracy must be carefully matched to avoid step marks or angle differences.
The fast clamp allows the upper punch to be replaced quickly and accurately. It reduces tool change time, improves operator efficiency, and helps keep the tooling position stable during repeated production.
For long tooling segments used in tandem bending, quick and accurate clamping is important for alignment. It helps reduce setup time and supports more consistent bending results across the complete working length.
Tandem Configuration Note
A tandem press brake system uses two press brakes working together under synchronized CNC control. The parameters below are listed for one single machine. When two machines are linked for tandem bending, the effective bending force and bending length are combined according to the selected pair. For example, two 400T/4000 machines form an 800T/8000 tandem bending solution. Final tandem capacity depends on machine pairing, controller synchronization, tooling length, foundation layout, and the actual workpiece requirement.
Nominal Force: 630 KN
Bending Length: 2500 mm
Vertical Distance: 2000 mm
Throat Depth: 350 mm
Stroke: 150 mm
Max. Opening: 350 mm
Main Power: 5 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3100 mm
Overall Width: 1500 mm
Overall Height: 2300 mm
Approx. Weight: 5.8 Ton
Nominal Force: 1000 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 8.7 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1600 mm
Overall Height: 2500 mm
Approx. Weight: 8.5 Ton
Nominal Force: 1000 KN
Bending Length: 4000 mm
Vertical Distance: 3500 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 8.7 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 4500 mm
Overall Width: 1600 mm
Overall Height: 2500 mm
Approx. Weight: 10 Ton
Nominal Force: 1250 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 10.8 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1600 mm
Overall Height: 2500 mm
Approx. Weight: 9.5 Ton
Nominal Force: 1250 KN
Bending Length: 4000 mm
Vertical Distance: 3500 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 10.8 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 4500 mm
Overall Width: 1600 mm
Overall Height: 2500 mm
Approx. Weight: 12.5 Ton
Nominal Force: 1600 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 13.2 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1650 mm
Overall Height: 2600 mm
Approx. Weight: 11 Ton
Nominal Force: 1600 KN
Bending Length: 4000 mm
Vertical Distance: 3500 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 13.2 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 4500 mm
Overall Width: 1650 mm
Overall Height: 2600 mm
Approx. Weight: 12.5 Ton
Nominal Force: 2000 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 13.2 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1700 mm
Overall Height: 2700 mm
Approx. Weight: 13.5 Ton
Nominal Force: 2000 KN
Bending Length: 4000 mm
Vertical Distance: 3500 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 13.2 kW
Axes: 4+1+2 (Y1, Y2, X, R) + V + manual Z1/Z2
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 4500 mm
Overall Width: 1700 mm
Overall Height: 2700 mm
Approx. Weight: 14 Ton
Nominal Force: 2500 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 200 mm
Max. Opening: 420 mm
Main Power: 16.7 kW
Axes: 4+1 (Y1, Y2, X, R) + V
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1700 mm
Overall Height: 2760 mm
Approx. Weight: 15.5 Ton
Nominal Force: 3000 KN
Bending Length: 3200 mm
Vertical Distance: 2700 mm
Throat Depth: 400 mm
Stroke: 300 mm
Max. Opening: 500 mm
Main Power: 21.4 kW
Axes: 4+1 (Y1, Y2, X, R) + V
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 3700 mm
Overall Width: 1800 mm
Overall Height: 2900 mm
Approx. Weight: 16.8 Ton
Nominal Force: 4000 KN
Bending Length: 4000 mm
Vertical Distance: 3100 mm
Throat Depth: 400 mm
Stroke: 300 mm
Max. Opening: 600 mm
Main Power: 26.9 kW
Axes: 4+1 (Y1, Y2, X, R) + V
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 4500 mm
Overall Width: 2450 mm
Overall Height: 3500 mm
Approx. Weight: 31 Ton
Nominal Force: 5000 KN
Bending Length: 5000 mm
Vertical Distance: 4500 mm
Throat Depth: 500 mm
Stroke: 300 mm
Max. Opening: 600 mm
Main Power: 37 kW
Axes: 3+1 (Y1, Y2, X) + V
Compensation: Motorized
X-travel: 600 mm
X-speed: 200mm/s
Overall Length: 6500 mm
Overall Width: 2800 mm
Overall Height: 4500 mm
Approx. Weight: 50 Ton
Nominal Force: 6000 KN
Bending Length: 6000 mm
Vertical Distance: 4900 mm
Throat Depth: 500 mm
Stroke: 300 mm
Max. Opening: 600 mm
Main Power: 45 kW
Axes: 3+1 (Y1, Y2, X) + V
Compensation: Motorized
X-travel: 800 mm
X-speed: 200mm/s
Overall Length: 6500 mm
Overall Width: 2900 mm
Overall Height: 5100 mm
Approx. Weight: 60 Ton
Nominal Force: 8000 KN
Bending Length: 6000 mm
Vertical Distance: 4200 mm
Throat Depth: 600 mm
Stroke: 400 mm
Max. Opening: 800 mm
Main Power: 55 kW
Axes: 3+1 (Y1, Y2, X) + V
Compensation: Motorized
X-travel: 800 mm
X-speed: 200mm/s
Overall Length: 6500 mm
Overall Width: 2950 mm
Overall Height: 5300 mm
Approx. Weight: 90 Ton
Nominal Force: 8000 KN
Bending Length: 8000 mm
Vertical Distance: 6200 mm
Throat Depth: 600 mm
Stroke: 400 mm
Max. Opening: 800 mm
Main Power: 55 kW
Axes: 3+1 (Y1, Y2, X) + V
Compensation: Motorized
X-travel: 1000 mm
X-speed: 200mm/s
Overall Length: 8500 mm
Overall Width: 2950 mm
Overall Height: 5900 mm
Approx. Weight: 120 Ton
Parameters change without notice. Final tandem model, control system, tooling length, machine pairing, safety configuration, foundation plan, and quotation data should be confirmed according to the actual order.
Send material type, thickness range, part drawings, required tolerance, daily output target, workshop layout, voltage requirement, and any existing process photos or videos. PREF Group can use this information to recommend a practical configuration.
Yes. The final machine can be discussed according to working size, capacity, controller preference, safety system, tooling, automation, voltage, and shipping requirements.
The parameter tables are used for model selection and comparison. Final order specifications should be confirmed with PREF Group before quotation, production, or publishing a final datasheet.
Start from the part drawing and the production bottleneck. If the main issue is bending, cutting, welding, grooving, punching, or spare parts compatibility, PREF Group can compare the related product category and recommend the better fit.
Three Starting Options
Five Basics Before Model Selection
Know the Full Process
Early Warning Signs to Expand
Choose the Right Upgrade Path
Balance the Entire Production Flow
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