2025 Press Brake Tonnage Calculator
Calculate the required tonnage for bending sheet metal. Input material type, thickness, bend length, and die parameters for precise press brake force calculations.
Bending Details
Factors Affecting Press Brake Tonnage
| Factor | Description | Impact | Typical Range |
|---|---|---|---|
| Material Strength | Ultimate tensile strength (UTS) | Higher UTS increases tonnage | 200-600 MPa |
| Sheet Thickness | Thickness of the metal sheet | Thicker sheets require more tonnage | 0.5-10 mm |
| Bend Length | Length of the bend | Longer bends increase tonnage | 100-3000 mm |
| Die Opening | Width of the V-die | Larger openings reduce tonnage | 6-24 mm |
| Bend Type | V-bending or air bending | Air bending requires less tonnage | V or Air |
Frequently Asked Questions
What is press brake tonnage?
Press brake tonnage is the force required to bend sheet metal, determined by material strength, thickness, bend length, and die parameters.
How do I calculate press brake tonnage?
Use the formula: Tonnage = (UTS * Thickness^2 * Length) / (Die Opening * Constant), where the constant varies by bend type (e.g., 8 for V-bending, 16 for air bending).
What is the difference between V-bending and air bending?
V-bending uses a V-shaped die and punch, requiring higher tonnage. Air bending allows the material to float, reducing tonnage but requiring precise control.
How do I choose the die opening?
A common rule is to use a die opening 8-12 times the sheet thickness for V-bending, or slightly larger for air bending.
How accurate are these calculations?
Calculations are based on 2025 engineering standards. Consult a press brake operator or engineer for critical applications.
Tips for Press Brake Bending
- Measure sheet thickness and bend length accurately for precise tonnage calculations.
- Choose a die opening 8-12 times the sheet thickness for optimal results.
- Use air bending for thinner materials to reduce tonnage requirements.
- Verify material UTS from supplier data or engineering references.
- Consult a press brake operator for complex or high-precision bends.
Disclaimer: Calculations are based on 2025 engineering standards. Consult a press brake operator or mechanical engineer for precise and safe bending operations.