Automation of the assembly processes increases productivity and, respectively, reduces labour-intensity of assembly. In many cases, in particular, in the assembly of small products, the equipment of automatic assembly takes less space than machines of assemblers performing the same process manually. Notwithstanding the advantages and indicators of productivity increase, the assembly processes in comparison to other technological processes are less automated. The aim of the present research is to compare interference obtained in the experiment with the calculated one by the developed method of engineering calculations for interference fit and to provide conclusions.