Calculation

Press Fit

Created on · press-fit

Estimates the elastic contact pressure and friction-transmittable load of a cylindrical press fit.

Joint diameter

Hub outside diameter

Shaft inside diameter

Engagement length

Diametral interference

Hub Young's modulus

Shaft Young's modulus

Hub Poisson's ratio

Shaft Poisson's ratio

Hub Rz

Shaft Rz

Smoothing factor

Interface coefficient of friction

How to use the result

Check the definition of the dimension and datum conditions on the drawing. The calculator does not replace inspection of the specific part.

p = effective diametral interference / (d · (K_hub/E_hub + K_shaft/E_shaft))F = π · d · L · p · μ; M = F · d/2000

Sources: https://www.dinmedia.de/en/standard/din-7190-1/248945061