Precision Bearings Series

The super precision angular contact bearings are available in the following dimension series;

Where a low cross section is a critical design parameter, bearings in the 718 or 79 series should be selected, if more radial space is available along with loads that are not very heavy, the 719 or 70 series could be used. Bearings in the 72 or 73 series have the largest corsss section for a given bore diameter and are suitable for heavy loads at relatively slow speeds.