LOW FRICTION BALL BEARING CAGE DESIGN WITH OPTIMIZED CONTACT SURFACE

摘要

A cage for a rolling bearing assembly with optimized contact surfaces to reduce friction between the cage and the adjacent contact surfaces is disclosed. The rolling bearing assembly includes a radially inner bearing ring including a radially inner race defined on a radially inner rolling element facing surface, a radially outer bearing ring including a radially outer race defined on a radially outer rolling element facing surface, and a plurality of rolling elements supported to roll between the radially inner race and the radially outer race. The cage includes a first rim including a first rolling element guide surface facing a plurality of rolling elements. A first outer surface facing away from the first rolling element guide surface includes a first outward projection. In another embodiment two bearing assemblies are provided, and each of the bearing assemblies includes a cage with optimized contact surfaces.

主权项

1. A rolling bearing assembly comprising:
a radially inner bearing ring including a radially inner race defined on a radially inner rolling element facing surface; a radially outer bearing ring including a radially outer race defined on a radially outer rolling element facing surface; a plurality of rolling elements supported to roll between the radially inner race and the radially outer race; and a cage including a first rim and a plurality of webs extending from the first rim, the plurality of webs defining rolling element pockets, the first rim including a first rolling element guide surface facing the plurality of rolling elements, and a first outer surface facing away from the first rolling element guide surface, the first outer surface including a first outward projection.