Press Brake Bending Tonnage & V-Die Sizing Calculator
Calculate air bending force (metric tonnes & US tons), recommended V-die openings (6t–12t), minimum flange lengths, and internal bend radius across mild steel, stainless, and aluminum.
Material & Bend Geometry
mm
mm
8.0x Thickness
mm
Standard air bend die openings: 6t (thin sheet), 8t (medium), 10t–12t (thick plate).
Total Required Bending Force
AIR BENDING
16.3 Metric Tonnes
Equivalent to 18.0 US Tons (160 kN total force)
Bending Force per Unit Length
Metric Intensity:
16.3 Tonnes / meter
Imperial Intensity:
5.5 US Tons / foot
Forming Geometry & Tooling Constraints
Natural Inside Radius (Ri ≈ V/6):
2.67 mm
Minimum Safe Flange (b ≈ 0.7 × V):
11.2 mm
Tooling Safety Recommendation:
Air bend OK; within standard 8t die window