Bearings, as a mechanical elements that allow relative movement of rotating parts while transferring loads between them, are primary in the most demanding sectors of machine industry, as automotive and aerospace industry, and they are required to have extremely high level of accuracy of manufacturing and meet the requirements prescribed by international standards. Producers specialized in the production of highly demanding types of bearings must prove eligibility criteria defined in ISO 281:2007 and ISO/TS 16281/2008 specification. This paper deals with the bearing testing results by manufacturer and research of the basic and modified rating life of bearings, the winning of new types of bearings, in accordance with the relevant specifications.
