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CNC Fully Hydraulic 3 Roll Variable Geometry Plate Rolling Machine

Wind Tower Bending Machine

Thickness specification: 20mm-240mm, width specification: 3000mm-4000mm. High-precision end of the pre-bending sets the length of the straight edge freely; direct pressure on the pre-roll bending, high-precision can be completed at the end of the bend.

What Is Wind Tower Bending Machine?

Wind tower bending machines are specialized equipment used in the fabrication of wind turbine towers, particularly for bending and shaping the large steel tubes or pipes that compose these towers. These machines are essential in the production of curved or tapered tower sections required for wind turbines.

The BIT PR Wind Tower Bending Machine with a High Productivity Package is a specialized system designed specifically for manufacturing on-shore wind turbine towers, foundations, and offshore structures. BIT PRV plate rolling machines and PR4 4 roll plate rolling machines offer advanced features and capabilities tailored to the demands of the wind energy industry.

Debugging Rolling Process of Ø9000mm【3 Roll Plate Rolling Machine】Wind Tower Bending Machine

PRV Wind Tower Bending Machine

Bending Thickness: 6-350mm;
Working Width: 1000-12000mm.

PRV Wind Tower Bending Machines with the variable geometry design, the horizontal position of the two lower rollers can be adjusted independently, the horizontal movement adopts hydraulic transmission, and the center distance can be adjusted, while the top roll moves on a vertical axis. PR4 has the function of pre-bending the end of the plate, which can feed the metal plate at one time, and can complete the pre-bending of the plate end and the rolling of the workpiece without turning around.

PRV Variable Geometry 3-Roll Bending Machine is easy to operate, easy to maintain, and has high rolling precision. It is an advanced and practical heavy plate rolling equipment.
PRV full hydraulic plate rolling machine, the oil cylinder adopts a structure of one up and one down.

PR4 CNC 4 Roll Steel Plate Rolling Machine

PR4 CNC 4 Roll Wind Tower Bending Machine

Bending Thickness: 5-280mm;
Working Width: 1000-9500mm.

BIT offers a very powerful, hydraulic 4-roll PR4 series Wind Tower Bending Machine with CNC controls. PR4 is a unique machine for rolling plates with high precision and high-efficiency advanced plate roller equipment.
BIT PR4 series steel heavy plate bending machine has been refined over the years through extensive research and development and is considered one of the finest plate rolling machines available on the market worldwide, which is particularly suited for large sheet metal thicknesses.
PR4 CNC hydraulic double-drive four-roller wind tower bending machine has an advanced and reliable structure and sufficient rigidity. The key parts such as the work roll are selected reasonably, manufactured with precision workmanship, excellent in performance and precision retention, suitable for long-term continuous processing, stable and reliable in operation control, and easy to operate.

Wind Tower Bending Machine

Top Seven Advantages of BIT Wind Tower Bending Machine

  • Thickness specification: 20mm-240mm, width specification: 3000mm-4000mm
  • Advanced fully hydraulic variable geometry 3-roller plate rolling machine
  • High-strength and high-torque design to meet the needs of continuous high-intensity work
  • Hydraulic top support, overload overflow
  • Side support with a radial and axial correction device
  • Power roller table with a centering device
  • A full set of accessories ensures efficient and fast plate rolling

The Wind Tower Bending Machines are crucial in the renewable energy sector for producing curved tower sections that provide stability and structural strength to wind turbines. They enable the creation of uniform and precisely shaped tower components, contributing to the efficient generation of wind energy.

Top 6 key aspects of wind tower bending machines

  • Capability to Handle Large Steel Tubes: Wind tower bending machines are designed to handle heavy-duty steel tubes with considerable thickness and length, typically used in constructing wind turbine towers.
  • High Precision Bending: They offer precise bending capabilities to create the specific curves and shapes required in wind tower sections. This precision is crucial for ensuring structural integrity and optimal performance of the towers.
  • Flexibility in Bending Angles: These machines often provide flexibility in bending angles and radii to accommodate the varying designs and specifications of wind turbine towers.
  • Automated or Controlled Bending Processes: Some machines may incorporate automation or computer-controlled systems to achieve accurate and repeatable bending, enhancing efficiency in mass production.
  • Strength and Durability: Given the demanding nature of wind tower fabrication, these machines are built to withstand heavy workloads and maintain accuracy over extended periods.
  • Safety Features: They may include safety measures to protect operators and ensure safe working conditions, such as emergency stop buttons, guards, or safety protocols.

Mastering Wind Tower Manufacturing: A Step-by-Step Guide

Mastering the manufacturing process of wind towers requires meticulous attention to detail at every step. From precision plate feeding and alignment to prebending and calibration, each phase contributes to the production of high-quality wind tower components. By leveraging advanced technologies of PRV plate rolling machines, manufacturers can streamline operations and achieve superior results in wind tower fabrication.

PRV Plate Rolling Machine for Wind Tower Manufacturing

Precision Plate Feeding and Alignment

The initial step in manufacturing wind towers involves precise plate feeding and alignment. This process begins by positioning the plate onto a supportive, motorized rollway, which then feeds the plate into the three bending rolls. Alignment is crucial and is achieved with the assistance of two hydraulic side arms, ensuring that the plate is centered and fed into the rolls at a slight angle.

First Prebending and Roll-Bending

Once aligned, the leading edge of the plate undergoes pre-bending as it moves through the rotation of the rolls. The top roll descends, exerting pressure and bending the plate, while the side rolls are inclined at the cone angle to facilitate smooth sliding. This process showcases the advantage of 3-roll bending machines over their 4-roll counterparts, particularly for wind tower sections.

Second Prebending and Roll-Bending

Following prebending of the leading edge, attention shifts to the trailing edge of the plate. Similar to the leading edge, the trailing edge undergoes prebending as the plate completes its rotation. The top roll applies pressure to the final section of the plate, while the lateral rolls maintain their positions, now inverted from their previous configuration.


After prebending, the plate enters the crucial calibration phase, stabilizing internal plate tensions and ensuring precise alignment. This phase plays a key role in maintaining tight tolerances and eliminates the need for post-weld calibration. However, variations in tolerance may occur, necessitating additional steps such as recalibration or extensive welding to address inconsistencies.

Read More: PRV Plate Rolling Machine for Wind Tower Manufacturing

The “High Productivity Package” of BIT Wind Tower Bending Machine likely signifies a set of enhancements, software, or additional tools integrated into the machine to boost its efficiency, output, and overall performance, making it well-suited for high-volume production in the wind energy sector.