Skew-angle roller bearing i.e. multi-row skew-angle roller bearing, for use with main spindle of machine tool for high speed machine cutting, has rolling members with no or small rotating movements in direction of travel in load-free zone

摘要

The bearing (12) has rolling members (22) e.g. balls, rotatably supported between an inner ring (32) and an outer ring (34). A load zone and a load-free zone exist for each of the rolling members based on a tilting angle (alpha). The form, the composition and/or the structure of the rolling members are modified and the rolling members are rotatably supported in cages (52, 54) arranged between the rings so that the rolling members comprise no or small rotating movements (R) in a direction of travel in the load-free zone.