Calculate the required tonnage for blanking, bending, and drawing operations. Get press size recommendations with safety margins and cost estimates.
Common: 0.0625 - 0.500
Square blank side, or use perimeter/4
Auto-filled by material selection
Required Tonnage
180 tons
Perimeter (48") x Thickness (0.125") x Tensile (60,000 PSI) / 2000
With 20% Safety Margin
216 tons
Recommended Press Size
300 tons
Next standard size
Press Type
Mechanical
Higher SPM for production blanking, lower cost under 200 tons
Estimated Cost
$150K-$300K
New equipment range
| Press Size (tons) | Typical Use | Status |
|---|---|---|
| 100 tons | Under-sized | Too small |
| 150 tons | Under-sized | Too small |
| 200 tons | Adequate | Available |
| 300 tons | Recommended | Best fit |
| 400 tons | Over-sized | Available |
| 500 tons | Over-sized | Available |
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Selecting the right press tonnage is critical. Under-sizing leads to tool damage and part defects, while over-sizing wastes capital. The required force depends on the operation type, material properties, and workpiece dimensions.
| Operation | Formula |
|---|---|
| Blanking/Punching | Tons = Perimeter x Thickness x Tensile Strength / 2000 |
| V-Bending | Tons = Length x Thickness² x Tensile Strength / (Die Width x 2000) |
| Drawing | Tons = Circumference x Thickness x Tensile Strength x Draw Factor / 2000 |
Hydraulic presses provide full tonnage throughout the stroke, making them ideal for deep drawing, forming, and operations requiring dwell time. Mechanical presses are faster (higher strokes per minute) and better suited for high-volume blanking and shallow forming.