Shrink-Fits Assembly
Assembly temperatures for shrink-fits.
Shrink-fits are assembled by heating them to temperatures where the expansion exceeds the interference. Required heating temperature can be calculated as
dt = δ / α di (1)
where
dt = temperature heating (oC, oF)
δ = diametric interference (mm, in)
α = coefficient of linear expansion (m/moK, in/inoF)
di = initial diameter of hole before expansion (mm, in)
Diametric interference can be calculated as
δ = dt α di (2)
