The load-bearing capacity of press and shrink fitted assemblies depend
s largely on the surface finish of the mating surfaces, which influenc
es the contact area and, in turn, the contact pressure of the assembli
es. The role played by the surface profiles can be best explained if i
t is possible to know how the profiles modify after assembly. This pap
er deals with the experimental investigations made to obtain the surfa
ce deformation details in shrink and press fits and their effects on t
he strength of the assemblies are discussed.