OhMyCalc

Interference Fit Calculator

Calculate interference and contact pressure for press-fit assemblies using Lamé equations.

How to Use the Interference Fit Calculator

  1. Enter shaft diameter in mm.
  2. Enter hole diameter in mm.
  3. Enter elastic modulus in GPa.
  4. Enter hub outer diameter.

Cas d'utilisation

Formule

δ = D_shaft − D_hole; p = Eδ / (d × ((d²+D²)/(D²−d²) + ν))

Questions fréquemment posées

How accurate is this calculator?
Results are based on standard scientific formulas and are suitable for preliminary estimates.
What units are used?
SI units (metres, kg, seconds) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.