Variable guide cage for rolling bearings and high speed bearing equipped with such a cage

摘要

A cage (1) made of synthetic thermoplastic material, preferably a poly-aryl-ether-ketone, for withholding at least one crown of rolling bodies (2) of a high-performance rolling bearing (3), wherein the cage (1) is made so that, below a value of the bearing speed factor between 1.2 and 1.5 millions, the cage (1) is guided onto the rolling bodies (2), while above such a value the cage (1) is guided onto an outer ring (4) of the bearing. A bearing (3) includes such a cage.