Determining the Optimal Sphere of Аpplication of Hybrid Rolling Bearings

Authors: Lavrentev Yu.L. Published: 09.02.2018
Published in issue: #1(118)/2018  

DOI: 10.18698/0236-3941-2018-1-57-65

Category: Mechanical Engineering and Machine Science | Chapter: Machine Science  
Keywords: ceramics, hybrid bearings, contact stresses, bearing fatique life, aircraftengine

The paper presents the analysis of loads and speed for which the usage of hybrid bearings with ceramic rolling elements is advisable. We compare the stresses in the contact of the balls with the roller paths in hybrid and steel bearings taking into account the effect of centrifugal forces. As a result, we offer the necessity criteria for hybrid bearing usage. Moreover, we describe the regions of operation (axial and radial forces, speed) for aircraft main shaft bearings, where hybrid angular bearings with ceramic balls are advisable to use. The study presents a method for evaluation of lifecycle of hybrid roller bearings with ceramic rolling elements


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