Bearing Mounting and Fitting: Thermal Expansion Effects || Dynaroll Bearing Design Factors Part 2

When bearing subassemblies are used at high temperatures, the differential expansion of the bearings and mating parts must be considered in addition to normal interference effects. It can be seen from the table below that many commonly used materials have higher coefficients of thermal expansion than bearing steel. Particular care must be given to designs where an aluminum shaft is pressed onto a thin section bearing.

Bearing Design Factors, Part 2 - Bearing Mounting and Fitting, Page 5: Shoulder Design