Calcolatrice Accoppiamento con Interferenza Gratuita

Calcola la pressione di un accoppiamento con interferenza.

mm
mm
mm
mm
GPa

Interface Pressure

150.0 MPa

Assembly Press Force141.4 kN

Interface Pressure vs Diametral Interference (delta)

Vedi formula →

Formula

## Press Fit (Interference Fit) Analysis A press fit creates a joint by assembling a slightly oversized shaft into a slightly undersized hole. ### Simplified Formula (solid shaft, same material) **p = delta E (1 - (d/D)^2) / d** where delta is the radial interference (diametral/2), d is shaft diameter, D is hub OD, and E is the elastic modulus. ### Assembly Force **F = pi d L p mu** where L is the engagement length and mu is the friction coefficient.

Esempio Risolto

A 50 mm shaft pressed into a hub (OD=100 mm) with 0.05 mm diametral interference, 40 mm long, steel.

  1. 01k = (50/100)^2 = 0.25
  2. 021/(1-0.25) = 1.333
  3. 03p = 0.05 x 200,000 / (50 x 1.333) = 10,000 / 66.67 = 150 MPa
  4. 04F = pi x 50 x 40 x 150 x 0.15 / 1000 = 141.4 kN