Free Engineering Tool: Press Brake Bending Force Calculator
Stop guessing your tonnage. Stop relying on outdated, complex charts. Our free, instant calculator—developed by WEIYA's own factory engineers—gives you an accurate tonnage estimate for your air bending application. As a leading press brakes manufacturer, we provide the tools you need to get the job done right.
WEIYA BENDING FORCE CALCULATOR
From Calculation to Creation: Instantly determine the required tonnage for your bending job
Total Required Tonnage (F)
38.2 Tons (Metric)Inner Radius (ri)
4.0 mmMin. Flange Length (B)
15.0 mmWEIYA Machine Recommendation
Your 2500mm workpiece requires 38.2 Tons (Metric) of pressure. We recommend a press brake with at least 40 Tons (Metric) capacity.
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F=38.2 B=15.0 ri=4.0 S=3.0 R=1.0 V=24.0 α=90 Need a complete sheet metal processing solution?
Understanding Your Tonnage Calculation
As a specialist manufacturer, we believe in empowering our partners. Here’s a brief explanation of the key factors in your calculation.
What is Air Bending?
This calculator uses the standard air bending formula, which is the most common and flexible bending method. It assumes the punch does not "bottom out" or "coin" the material.
The Importance of the V-Die Opening
The V-Die opening is the most critical factor. A good rule of thumb is 6x to 8x your material thickness (e.g., 8mm die for 1mm steel). Making the V-Die smaller will dramatically increase the required tonnage.
Material Factor (K-Factor)
Different materials have different tensile strengths. Stainless steel, for example, requires ~1.5x the force of mild steel, while aluminum requires ~0.5x. Our calculator automatically adjusts for this.
Now That You Know Your Tonnage, Find the Right Machine
Knowing your tonnage is the first step. The next is choosing a machine that can deliver that force reliably for a decade. Our press brakes are engineered with 1000kg heavier, annealed frames that guarantee they can handle their full rated tonnage without deflection, day in and day out.
Press Brakes
High-Precision & Repeatable Bending
Essential for accurately forming sheet metal into angles and complex profiles, ensuring perfect part fitment and assembly.
Metal Shearing Machines
Fast, Clean & Straight Cutting
The reliable first step in fabrication, providing accurately sized, square blanks ready for subsequent bending or forming operations.
Fiber Laser Cutting Machines
Intricate, High-Speed Shape Cutting
Offers unparalleled flexibility to cut complex contours, holes, and patterns at high speed across various metals and thicknesses
Plate Rolling Machines
Cylindrical & Conical Forming
Engineered to bend flat sheets or heavy plates into precise curves, cylinders, or cones for tanks, columns, and structural elements.
Punch Presses
High-Efficiency Punching & Stamping
The high-speed solution for producing parts with multiple holes, louvers, or stamped features, ideal for high-volume production runs.
Hydraulic Presses
Deep Drawing, Forming & Assembly
Delivers massive, controllable force for heavy forming, drawing deep shapes like sinks or drums, and performing pressing/assembly tasks.
V Grooving Machines
Precise Grooving for Sharp Bends
A specialized machine that enables crisp, sharp-angle bends, crucial for high-end architectural panels and decorative finishes.
Download WEIYA 2026 Catalog
The reliable first step in fabrication, providing accurately sized, square blanks ready for subsequent bending or forming operations.
V Grooving Machines
Precise Grooving for Sharp Bends
A specialized machine that enables crisp, sharp-angle bends, crucial for high-end architectural panels and decorative finishes.
Download WEIYA 2026 Catalog
The reliable first step in fabrication, providing accurately sized, square blanks ready for subsequent bending or forming operations.
Contact Us
Have a Complex Bending Application?
Is your part made of AHSS? Does it require a custom die? Don't guess. Our factory engineers are here to help. Contact us for a free, no-obligation engineering consultation to analyze your part and determine your exact needs.