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Bend Deduction and Flat Length Calculator, and Press Braking Capacity

Here BIT provides you with the Press Braking Capacity Table. You should also check out our Bending Process page.

Bending Process Calculator

Here we provide some calculators for the metal bending process, hoping they will be helpful to you!

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Bend Deduction and Flat Length Calculator


The Bend Deduction and Flat Length Calculator is a tool designed to assist in the calculation of bend deductions and flat lengths for sheet metal bending operations. It is commonly used in the fabrication industry to determine the material requirements and dimensions needed for accurately bending sheet metal to desired angles.

How it Works

To use the calculator, simply input the following parameters:

  1. Material Type: Select the type of material being used for the sheet metal (e.g., steel, aluminum, stainless steel).
  2. Thickness: Enter the thickness of the sheet metal in millimeters (mm).
  3. Bend Angle: Specify the desired bend angle in degrees.
  4. Bend Radius: Enter the bend radius, which is the radius of the bending die or tool used in the bending process, in millimeters (mm).

After providing these inputs, click the “Calculate” button. The calculator will then compute the bend deduction and flat length based on the input parameters. The bend deduction represents the amount of material that is removed from the total length of the sheet metal during the bending process. The flat length is the total length of the sheet metal required before bending to achieve the desired bent shape.


The Bend Deduction and Flat Length Calculator is essential for sheet metal fabrication shops, engineering firms, and manufacturing industries involved in metalworking processes. It helps in accurately predicting material requirements, minimizing material waste, and optimizing the bending process for efficiency and precision.

Use this calculator to streamline your sheet metal bending operations and achieve accurate results in your fabrication projects.

Press Braking Capacity Table

All These Capacities Are For Mild Steel – S275 Material

Press braking capacity is a pivotal consideration in metal fabrication, dictating the capability of a press brake machine to bend metal sheets of various sizes and thicknesses. Mastery of this capacity is vital for ensuring production efficiency, quality assurance, and meeting project specifications. This article delves into the significance of press braking capacity, the factors influencing it, and strategies for effectively managing it.

Key Factors Influencing Press Braking Capacity

The press braking capacity of a machine hinges on several key factors, including the machine’s tonnage, bed length, and throat depth. These specifications determine the maximum force the machine can exert, as well as the size and shape of the metal sheets it can effectively bend. Additionally, the material properties of the metal being bent, such as its thickness, ductility, and yield strength, significantly influence press braking capacity.

Machine Specifications

Press brake machines come in various sizes and configurations, ranging from small manual presses to large hydraulic or CNC-controlled systems. The tonnage of a press brake machine refers to the amount of force it can apply during bending, with higher tonnage machines capable of bending thicker and stronger materials. Bed length and throat depth dictate the size and complexity of the metal sheets that can be accommodated by the machine, influencing its overall bending capacity.

Material Properties

The type and properties of the metal being bent play a crucial role in determining press braking capacity. Thicker and stronger materials require higher tonnage machines to achieve proper bending, while softer and more ductile materials may require less force. Understanding the material’s yield strength, elongation, and other mechanical properties is essential for selecting the appropriate press brake machine and optimizing bending operations.

Optimizing Press Braking Capacity

Effective management of press braking capacity involves careful planning and analysis of machine capabilities and material requirements. By matching the tonnage, bed length, and throat depth of the press brake machine to the specific needs of the project, manufacturers can ensure efficient bending operations and high-quality outcomes. Additionally, employing advanced software and tooling technologies can enhance precision and flexibility, further maximizing press braking capacity.


In conclusion, press braking capacity is a critical aspect of metal fabrication, influencing the size, thickness, and complexity of bent components. By understanding the key factors that influence press braking capacity and leveraging advanced technologies, manufacturers can optimize their bending operations, enhance productivity, and achieve superior results. Investing in high-quality press brake machines and expertise is essential for meeting the demands of diverse projects and industries with confidence.