Air bending only
Bottom bending, coining, hemming, offsets and special forming tools require different force calculations.
90-degree air bending
Estimate bending force before choosing the machine.
Enter the material, thickness, bend length and V-die opening. The result carries directly into the BENDRYX configurator as a technical starting point.
Metric calculation basisF = 1.42 × L × Rm × S² ÷ (1000 × V)F in kN · L, S and V in mm · Rm in N/mm²
Use the result responsibly
Force is only one part of press brake selection.
Final machine and tooling capacity must be checked against the actual material certificate, bend method, tool load rating, off-centre loading, part geometry and safety requirements.
Tooling limits matter
Machine capacity does not override the allowable load of the punch, die, adapters or clamping system.
Confirm the material
Actual tensile strength, rolling direction, hardness and bend-radius requirements can materially change the result.
Calculation basis: the metric 90° air-bending relationship published in LVD Tooling Essentials. Die-opening and radius guidance follows common air-bending rules explained by Bystronic.