Factors Affecting Laboratory Accelerated Testing of Materials for Rolling Elements

Abstract

Although laboratory tests simulating service conditions place materials and lubricants in the same order as full-scale bearing tests, considerable variation can occur between results from machines of the same type. Alignment and elimination of vibration of rolling four-ball type machines and specimen flatness of washer-type machines are important to obtain reproducible results. Results from reference materials are used to illustrate the various factors.