The paper presents result of the research on influence of internal radial clearance in radial cylindrical roller bearing on its fatigue
durability. By solving the Boussinesq problem for the elastic half-space and finite elements method, stress distributions were determined, necessary to estimate predicted fatigue life of the bearing. The calculations took into account geometrical parameters of
the bearing: its radial clearance and shape of rolling parts. Predicted radical clearance was computed by using the Lundberg and
Palmgren model. ANSYS program allowed to introduce the analysis of von Mises stress distribution in any plane of cooperating
components. The outcome revealed, radial cylindrical roller bearing will have highest endurance with slight radial clearance.
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