torsion bar synchronous CNC press brake machine for sheet metal bending

Torsion Axis Servo CNC Press Brake

The PSN Series Torsion Axis Servo CNC Press Brake is designed for stable,
high-precision sheet metal bending. Featuring a torsion shaft synchronization
structure and servo-controlled backgauge system, it delivers reliable accuracy,
rigid frame stability, and efficient operation for industrial metal forming applications.

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Torsion Axis Servo CNC Press Brake

The PSN Series torsion axis servo CNC press brake is engineered for precision
sheet metal bending with excellent structural rigidity and operational stability.
The whole machine adopts a welded steel plate frame, treated by vibration aging
to eliminate internal stress and ensure long-term accuracy.

This series uses a torsion shaft synchronization mechanism combined with
servo-controlled systems to maintain consistent ram movement on both sides.
Mechanical stops and a stable torsion axis ensure reliable bending accuracy
even during long work cycles.

The CNC-controlled backgauge and ram stroke allow precise positioning and fast
setup. The machine is suitable for general fabrication, enclosures, cabinets,
steel structures, and other sheet metal forming applications.

Item Specification
Model Type 100T / 4000
Nominal Force 1000 kN
Bending Length 4000 mm
Poles Distance 3060 mm
Throat Depth 400 mm
Ram Stroke 160 mm
Max Open Height 410 mm
Main Motor Power 7.5 kW
Overall Dimensions (L × W × H) 4200 × 1500 × 2420 mm

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Machine Configuration Overview

  • Standard brand motor for CNC press brake

    The standard configuration uses a well-known brand “Wannan” motor, which is durable and powerful.
    Optional motor brands include Siemens Beide motors and ABB motors.

    Standard Brand Motor

  • torsion bar synchronous cnc press brake

    The precise and stable rear backgauge system adopts a novel dual linear guide rail structure,
    ensuring excellent positioning accuracy.
    The multi-level gear design increases the positioning range and provides excellent value for money.

    4+1 Axis Backgauge System

  • torsion bar synchronous cnc press brake

    7-inch TFT true color touch screen with high definition and high contrast.
    Menu-style programming interface with large key design.

    Supports programmable cutting functions, making batch complex cutting simple and efficient.
    Supports quick single-step cutting with automatic calculation of cutting length.

    The rear material adopts servo control with fast and accurate automatic positioning.
    Automatically calculates blade clearance and shear angle.
    Supports multiple languages and automatic cutting.

    E200PS CNC System (Optional)

  • Servo motor driven oil cylinder for CNC press brake

    The hydraulic oil of the oil cylinder is controlled by a servo motor to control the synchronous belt,
    thereby accurately controlling the oil cylinder.
    This makes the bending accuracy more precise and the bending pressure more controllable.

    Servo Motor Driven Oil Cylinder

  • torsion bar synchronous cnc press brake

    Internationally renowned brands of electrical components are used, including Omron and Schneider Electric.
    All components comply with DIN and ISO standards, ensuring stable quality, safety, and reliability.

    Electrical Control System

  • Fast clamping upper tool and dual V lower die for CNC press brake

    The upper tool adopts a mechanical fast clamping device, which is easy to operate and convenient for replacement.
    The lower die adopts a dual V die and T-type quick clamping method, enabling rapid tool replacement.

    Fast Clamping Upper Tool and Dual V Lower Die

  • Mechanical torsion shaft structure for press brake torque synchronization

    The mechanical torsion shaft structure can achieve torque balance.
    The slider runs smoothly and reliably up and down, achieving high efficiency and high-precision torque synchronization.

    Mechanical Torsion Shaft Structure

Performance Features

Designed for precision sheet metal bending, combining electro-hydraulic synchronization, structural rigidity, and reliable CNC control.

High-Rigidity Welded Frame

The machine adopts a fully welded steel plate structure combined with vibration aging treatment, effectively eliminating internal stress and ensuring high rigidity, strength, and long-term structural stability.

Torsion Bar Synchronous System

Dual hydraulic cylinders work together with a torsion bar synchronization mechanism, providing stable left-right balance, smooth ram movement, and consistent bending accuracy across the full working length.

CNC-Controlled Backgauge & Ram Stroke

Backgauge positioning distance and ram stroke are precisely controlled by the CNC system, enabling fast setup, repeatable positioning, and efficient operation for both single-piece and batch production.

Optional Deflection Compensation

An optional deflection compensation device is available to reduce bending angle deviation, especially for long workpieces or higher precision requirements, improving overall bending consistency.

Press Brake Applications

Our press brake machines are widely used in precision sheet metal fabrication across multiple industries.

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Metal Fabrication Workshop

High-precision bending solutions for job shops handling various metal materials, thicknesses, and custom fabrication requirements.

Automotive Manufacturing

Precision bending for automotive body panels, chassis components, brackets, and structural parts, ensuring consistency and high production efficiency.

Aerospace Industry

High-precision bending of aerospace components for aircraft structures, requiring exceptional accuracy, repeatability, and strict quality control.

Elevator & Lift Manufacturing

Reliable bending solutions for elevator cabins, doors, frames, and guide components, meeting strict safety and dimensional standards.

Shipbuilding Industry

Heavy-duty bending for ship hull panels, decks, bulkheads, and structural steel parts, designed for large-scale and high-load applications.

Construction Industry

Precision forming of steel structures, beams, panels, and architectural metal components for commercial and industrial construction projects.

FAQ

All specifications are provided by our engineering team based on actual machine configurations and production experience.

We offer a complete range of CNC press brakes for sheet metal bending, including electro-hydraulic synchronous press brakes, torsion bar press brakes, tandem (dual-machine) press brakes, and customized special-purpose press brakes.
Our main series include PSB, PSM, PSN, PSD, PSA, and PSS, covering light-duty to heavy-duty industrial applications.

Press brake tonnage depends on material type, material thickness, bending length, and die opening.
As a general reference:

Tonnage ≈ (650 × S² × L) / V

Where:

  • S = material thickness (mm)

  • L = bending length (m)

  • V = die opening (mm)

Our engineers can calculate the exact tonnage and recommend the most suitable model based on your actual production needs.

Electro-hydraulic synchronous press brakes use servo valves and closed-loop control systems to achieve higher accuracy, better repeatability, and stable synchronization, making them suitable for precision and heavy-duty bending.

Torsion bar press brakes use mechanical synchronization and are more cost-effective, ideal for standard bending operations with moderate accuracy requirements.

Our CNC press brakes can achieve:

  • Slider positioning accuracy: ±0.01 mm

  • Bending angle accuracy: ±0.1° (depending on configuration and tooling)

Accuracy may vary based on material properties, tooling, and operator settings.

Our press brakes are suitable for bending a wide range of materials, including:

  • Mild steel

  • Stainless steel

  • Aluminum

  • Copper

  • Brass

  • Galvanized steel

Maximum thickness depends on machine tonnage and bending length.

We support internationally recognized CNC control systems, including:

  • DELEM (Netherlands)

  • ESA (Italy)

  • CYBELEC (Switzerland)

For entry-level models, simplified controllers are also available.

Yes. We offer long-term technical support, including:

  • Remote troubleshooting

  • Spare parts supply

  • Operation guidance

  • Maintenance advice

Our goal is to ensure stable and reliable machine operation throughout its service life.

Yes. We provide extensive customization options, including:

  • Stroke length

  • Daylight (opening height)

  • Throat depth

  • Backgauge axes configuration

  • Tool clamping systems

  • Safety protection options

Customization ensures the machine fits your specific production requirements.

es. Our PSD series tandem press brakes connect two machines through a synchronized control system, allowing bending of extra-long and heavy workpieces with stable accuracy a

Our press brakes are widely used in:

  • Sheet metal fabrication

  • Steel structures

  • Automotive parts

  • Elevator manufacturing

  • Electrical enclosures

  • Construction and infrastructure projects

Standard models are usually ready within 2–4 weeks.
Customized machines may require additional lead time depending on configuration.

es. We provide on-site installation, commissioning, and operator training, as well as remote technical support when require

We provide a 2-year warranty covering manufacturing defects.
During the warranty period, we offer technical support and replacement of defective parts according to warranty terms.

We provide a comprehensive warranty covering manufacturing defects, hydraulic systems, electrical components, and CNC controllers.
During the warranty period, defective parts will be repaired or replaced according to warranty terms. Long-term spare parts supply and technical support are guaranteed.

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Configure a Press Brake Based on Your Production Requirements

Technical configuration support for project-based bending applications

• Material type, thickness, and bending length evaluation
• Tonnage calculation and structural configuration review
• Optional tooling, backgauge, and safety system selection

Discuss Your Application With Our Technical Team

Technical drawings and production parameters are recommended for accurate configuration.

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