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Bearing basics: Purpose, design features of common elements

Publication date: 
November 2016
Jim Bryan, EASA Technical Support Specialist
Type of media: 

Rolling-element bearing construction has become a very precise and exacting process. Studies have shown that more than one-half of motors that come to service centers are because of worn out or failed bearings. This is understandable since this component is subject to wear and sometimes abuse. Bearing manufacturers are called upon to improve the quality and reliability of their product to increase the time in service before it becomes necessary to replace the bearings. Proper application and maintenance of the bearing is also a key to improved reliability. We will discuss in this article some of the components used to better understand what applications can be accommodated.

  • Races
  • Rolling elements
  • Cages
  • Shields and seals