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Aluminium Bending Machine

Effortlessly get the power and flexibility for your aluminum bending.

Once Designed In CAD, The Workpiece Can Be Reproduced At Any Time.
Efficient, Reliable, and Even More Versatility. Reproducible Manufacturing Process. Suitable for Difficult Variable-Curvature Arc Aluminum Bending Processing.

  • Up to 9 Independent Controllable Servo Axes.
  • Accuracy is As High As ≤0.01mm.
  • CNC Automatic Control, DXF, STEP Import;
  • User-friendly and as Easy to Operate as an Apple Phone.
  • 3-D, S-shaped, C-shaped,U-shaped, Full Circle, Ellipse, Multiple Radii, Etc.

Our Aluminum Bending experts are happy to help you.
Call us at 0086-177-513-00713 (WhatsApp);

Model of PBA-CNC Aluminum Profile Bending Machine

Parameters of PBA Aluminum Bending Machine

ModelPBA-300FPBA-450PBA-500PBA 500+PBA-500FPBA-600PBA 600+PBA-800PBA-1000PBA-1200
Roller Speed
Max.DIA Mold
Roller DIA
Axis Distance
Y-axis Thrust
Accuracy Y-axis
Max.Torque X-Axis
Max.Section size

Source: tensile strengths for aluminum and stainless steel; Alum Extrusion Standard Tolerance; Tolerances Chart for Aluminium Bending

CNC aluminum profile bending process
CNC flexible aluminum profile bending process

Advantage of BIT CNC Aluminum Profile Bender

Repeatability and Accuracy: Fully servo-driven, higher repeat positioning accuracy, allows for precise control over the aluminum bending, resulting in higher accuracy and repeatability.
Variable Geometry Bending Rolls: Maximizing machine capabilities requires the flexibility of variable centers to accommodate various workpieces.
Springback Compensation Calculation: PBA’s CNC control system by simply testing the actual radius during bending, the springback compensation amount can be determined and inputted into the system, ensuring achieving the desired geometric shape and dimensions during the aluminum bending process.
Ease of Use:
Operators should be able to master complex bending tasks within a single day; Consistent accuracy; Consistent shape production; Simple development of irregular shapes; and Reliability for both low and high volumes.

Notes: Each batch of aluminum extrusions will have slightly different chemical compositions, resulting in varying degrees of springback during bending. Excessive variation in the bending curvature radius can lead to certain deviations.

Software function

  • The workpiece can be rolled bent formed at one time; it can also be bent and formed repeatedly in various forms according to the needs;
  • Bendable shapes: C-shape, U-shape, 3R-shape, S-shape, ellipse, and various arcs with variable curvature symmetrical on both sides; parabola, Archimedes spiral, and various asymmetrical arcs with variable curvature.
  • 2D drawing DXF file, 3D drawing STEP file USB import, and directly generate aluminum profile roll bending process program and automatically assign address; roll bending process data can be manually modified, and roll bending process data can be exported through USB;
  • The interface operates and displays a 3D simulated three-dimensional arc, and the color changes synchronously to display the roll bending process; the simulated arc profile can be opened, zoomed, and rotated.
  • It can realize the three-axis linear interpolation function of the X-axis, Y-axis, and Z-axis, display the position change data of each action axis and workpiece movement data on the screen, and monitor the interpolation effect at any time to ensure the real interpolation function.
  • The equipment reserves an Internet communication interface, which can be used for remote online monitoring, remote debugging, online upgrade, etc.
  • The data of each axis has a power failure memory function and a permanent data storage function to prevent data loss due to power failure, shutdown, or equipment failure.
  • Automatically detect errors and equipment failures, and display errors, failure content, and codes on the screen, which is convenient for operators to troubleshoot easily.
  • Servo parameters can be preset through the system, and key parameters and the status of the servo can be monitored through the system.
  • The software can automatically extract material rebound data and interpolation arc length data of different radii, without manual input one by one, which effectively saves programming time and reduces the difficulty of equipment operation.
  •  Self-diagnosis function: if the equipment fails, it can judge whether the components are good or bad
  • Manual adjustment function: the arc with inaccurate size can be corrected by manual function.
  •  4G memory, 128G solid state hard disk, can store enough processing formulas for multiple profiles.
Aluminum Profile Bending Machine
PBA-1500 Aluminum Bending Machine: The world’s largest servo-electric driven roller bending machine, the world’s largest section bender capable of torsional twisting of sections up to 500mm in diameter (20″), and the world’s largest 3D programmable profile bending machine.

Patent of PBA-CNC Series Aluminum Bending Machine

Shaft seat slideway (Chinese patent)

  • Steel plate quenching and tempering treatment, quenching treatment, dovetail groove structure connection, each surface is processed by grinding machine, after combination, the upper and lower planes are processed by grinding machine, and the surface is electroplated with hard chrome.
  • High strength, good structural stability, and can withstand particularly large tensile forces.
  • The minimum distance between the fixed roller on the left and right sides can be adjusted.

X-axis rotation transmission mechanism (Chinese patent)

  • Each roller spindle drives a planetary reducer through a CNC servo motor, and the planetary reducer drives the mold spindle to rotate
  • The speed ratio can be automatically configured to ensure that the linear speed of the roller mold is consistent
  • It has a large driving torque and is suitable for bending large cross-section profiles.

Y-axis propulsion mechanism (Chinese patent)

  • Structure: The CNC servo motor drives the special reducer, and the special reducer drives the linearly movable reducer to realize the precise positioning of the intermediate spindle.
  • Advantages: High-precision positioning can be guaranteed when the spindle advances and retreats, and it is suitable for highly difficult variable curvature arc processing.

Z-axis lifting mechanism (guide roller) (Chinese patent)

  • Structure: The lifting reducer and guide device are controlled by the servo motor to realize the precise movement of the Z axis up and down;
  • Advantages: This structure is easy to adjust and has high positioning accuracy

Application of CNC aluminum profile bending machine

PBA-CNC series aluminum profile bending machine is suitable for the bending of various non-standard metal profiles in the industries of building doors and windows, curtain walls, cable trays, decoration, automobile industry, aerospace, high-speed rail, elevators, sanitary ware, ships, tunnels and bridges, exhibitions, advertising, and other industries.

PBA Aluminum Bending Machine vs. Conventional Machines

Servo System of Aluminum Bending Machine

Y-axis Positioning Methods

  • Fully servo-driven, with a repeat positioning accuracy of less than 0.01mm, unaffected by temperature;
  • Conventional machines: Driven by hydraulic cylinders, positioning speed and accuracy are easily affected by temperature.
Servo System of Aluminum Bending Machine

Spindle (Y-axis) Rotation Drive

  • Servo motor + planetary gearbox, constant torque, no inertia, high positioning accuracy, high torque transmission efficiency;
  • Conventional machines: Variable frequency drive motor driving gear reducer, transitioning through a universal joint drive shaft, torque increases with speed, large motor inertia, leading to poor system stability and low positioning accuracy.
Horizontal Types of Aluminum Bending Machine

Horizontal Positioning is Preferred

  • PBA aluminum bending machines are vertical spindle and horizontal installations that high-precision bending for aluminum profiles of varying lengths, and are best suited for handling long, narrow workpieces, and also good for creating tight bends without deformities.
  • Vertical aluminum bending machines not suitable for processing biger aluminum profiles, can be more difficult to operate and they’re not as precise as horizontal machines.

Notes: When bending large workpieces or large-diameter aluminum profiles, horizontal positioning is preferred. Proper support in the chosen position prevents the weight of the workpiece from affecting the final results. Bending in a horizontal position is also utilized to address clearance issues at customer facilities.

X-axis Variable Center Distance of Aluminum Bending Machine

X-axis Variable Center Distance

  • PBA is the variable geometry aluminum profile bending machine, variable centers adjust the machine to perform like a large or small machine, and are suitable for bending aluminum profiles and for heavy metal fabrication work.
  • Conventional machines: The X-axis center distance of commonly used aluminum profile bending machines for door and window profiles in the market is not adjustable.
Aluminum Profile Bending Machine
PBA-300F Aluminum Profile Bending Machine
Power:2.5KWRoller speed:1-30 rpm
Max.DIA Mold:160mmRoller DIA:30mm
Axis distance:100mmY-axis thrust: 5 tons
Accuracy Y-axis:≤0.01mmMax.torque X axis:1200 N.m
Max.Section size (W×H): 50mm×70mm


CNC Profile Bending Machine
PBA-400E CNC Profile Bending Machine
Power:6KWRoller speed:0~8m/min
Max.DIA Mold:200mmRoller DIA42mm
Axis distance:100-300mm Adjustable
Y-axis thrust:15 tons
Accuracy Y-axis:≤0.01mmMax.torque X axis:2000 N.m
Max.Section size (W×H): 100mm×120mm


Aluminum Bending Machine FAQ

  • What is aluminum bending machine and how does it work?

    About PBA-CNC Aluminum Benders: Aluminum profile bending machines (also called aluminum benders) are used to form aluminum profiles.
    An aluminum bender is the forming of aluminum profiles in one axis by a multi-roll bending machine. If the semi-finished product is not moved during the bending process, the distance between the rollers, their diameter, and the depth of immersion determine the bending radius. To produce particularly large bends, the material is pulled through the roller bending machine and moved alternately. The distance between the rollers is gradually adjusted. In most cases, roll bending is the most flexible and cost-efficient bending method. A profile is guided between three adjustable bending rolls and gradually bent in the desired radius.
    Roll bending is the ideal bending method for profiles with complex designs and different radii. BIT’s PBA CNC profile bending machine has become specialized in 3D aluminum profile bending machines.

  • What information should I prepare before inquiry an aluminum bending machine?

    Before inquiring about an aluminum bending machine, it’s essential to gather pertinent information to ensure we recommend an informed decision aligning with your specific bending requirements.
    Aluminum Alloys: Note the specific aluminum alloys you’ll be bending (e.g., 6061-T6). The hardness state of aluminum is important.
    Drawings: Drawings of aluminum extrusions and bending process drawings.


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