Super Precision Machine Tool Bearings

Super Precision Bearings sold in duplex pairs.
It is of utmost importance that shafts and housings are accurately and precisely mated in order to take full advantage of the precision bearings’ capabilities, which include rotational accuracy, high speed performance, and low heat generation.
When the inner ring or outer ring is mounted onto a shaft or into a housing with some interference, the shape of shaft or housing (out of roundness) is transferred to the bearing raceway surfaces and affects running accuracy. When different arrangements of angular contact ball bearings are used, cylindricity affects the distribution of preload for each bearing. Therefore, the mating parts should be as accurate as possible. Inaccurate mating of parts can cause the formation of peaks or ridges along the shaft of a precision lathe, which can affect the quality of finished work. 
Some single Super Precision bearings sold on request.