Press Brake Tonnage Calculator

Capacity chart for air bending

The given data has been calculated based upon bending material with a tensile strength of δb=420 MPa over a length of 1m.

Capacity chart for air bending

Internal radius R

The internal radius R corresponds to approximate 16% of the die opening V.

Recommended die opening V for air bending

Material thickness (t) 0.5~2.5mm 3~8mm 9~10mm >12mm
Die opening (V) 6 × t 8 × t 10 × t 12 × t

Bending force for

Alu δb=300 MPa F=F(chart)× 0.65
S.S δb=700 MPa F=F(chart)× 1.6