Bending force and tonnage for press brakes – calculator

_{Legend:
F , kN - Complete bending force required
s , mm - Material thickness
V , mm - Bending die opening
h , mm - Minimum required sheet rest length before bending
L , mm - Lenght of the bend
R , mm - internal radius
TS - Tensile strength of the metal to be bended}

Sheet thickness (s), mm
Material (TS), kg/mm2	Select material... Mild steel(45) Stainless Steel (80) Aluminum(20)
Die opening (V), mm
Width of bending (L), mm
Bending angle (ɑ)	Select Angle... 30 45 60 90 120 135 165
Min. rest length (h), mm
Bending force (F), tons
Internal radius (R), mm

The present calculation is only for general purposes. If the type of material and other parameters are even slightly different the calculation can't reach industrial precision.