1. Roller or needle bearings: geometry and equivalent radii
The load capacity of bearings is determined by the permissible Hertzian pressure in the rolling element/raceway contact. The shape of the pressure field in the contact depends on the geometric profile of the rollers. In the case of a cylindrical roller subjected to a centered load, edge effects cause stress peaks at the ends of the roller (Figure 1 ).
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Roller or needle bearings: geometry and equivalent radii
Hertzian pressure and deformation
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