Press-Fit Calculator

Use our interactive press fit calculator to determine how tight the interference should be on your project. Simply input some parameters of the assembly you are using a press fit for and receive valuable insight about the success of your design.

  1. 1. Enter your material properties based on your data sheet or use Materials.AI to help estimate
  2. 2. Enter the critical dimensions from your design
  3. 3. Calculate the axial force of your press fit (for multiple pins add force of each pin for total press force)
General Geometry
Hole Geometry
Pin Geometry

This press fit calculator calculates the amount of mechanical force based on pressure induced due to interference fit of a pin and hole assembly

This formula assumes solid pins into holes with very thick walls (such as in large plates of block). The formulas used and results are listed below:

Calculated Value Reference Formula Result Units
Radial Interference formula radial interference mm
Contact Area formula radial interference   mm2
Axial Force formula radial interference   N
Pressure formula pressure   Mpa

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