Tonnage Calculator

NOTE OF CAUTION: Calculations are approximate. Tonnage requirements and ability to safely punch required hole depends on quality of equipment and tooling. Piranha is not responsible for inaccuracies or results. Due to extreme pressures generated when punching, care must be taken to not exceed the strength of the tooling.

For example, when punching through 60,000 psi material, NEVER attempt to punch a hole smaller in diameter than material thickness. Additional safety margins must be considered if tensile strength of material is higher than 60,000 psi.

DIRECTIONS:

  • Calculator will accept fractional numbers in decimal format only. Example: 1.125 or 0.75 or 0.81
  • For material less than 1 inch enter in the following format: 0.5 (zero point number)

For your convenience, here is a handy tool to calculate a decimal from the fraction.

Calculate Fraction A/B
/
Your decimal equivalent is:


Calculate Punch Tonnage

Enter the values for the shape of hole you need and then click “calculate”. The required tonnage will appear below.

Your Required Tonnage:

Round Hole:

Hole diameter in inches:

Material thickness in inches:

Material tensile strength:


Square/Rectangular Hole:

Length of first side in inches:

Length of second side in inches:

Material thickness in inches:

Material tensile strength:


Oblong Hole:

Length of slot in inches:

Width of slot in inches:

Material thickness in inches:

Material tensile strength:


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