Super Precision Machine Tool Bearings

To fully utilize the advanced capabilities of precision bearings—such as rotational accuracy, high-speed performance, and minimal heat generation—proper and precise mating of shafts and housings is essential. When an inner or outer ring is mounted onto a shaft or within a housing with interference, any out-of-roundness in these components transfers to the bearing raceway surfaces, impacting running accuracy. In arrangements involving angular contact ball bearings, cylindricity directly affects preload distribution across each bearing. Therefore, ensuring high-precision mating parts is crucial. Improper fits can lead to the formation of peaks or ridges along a lathe shaft, ultimately influencing the quality of finished work.