Rolling bearing element comprising a zirconium material

摘要

A rolling element bearing comprises an outer ring (1) and an inner ring (2) which enclose a bearing space containing rolling elements (3) which are in rolling contact with the raceways of both rings. At least the contact surface layer (5,7) of one of the rings (1,2) and/or rolling elements (3) consists of a zirconium material. At least one of the rings has a composite layered structure comprising an outer layer of steel facing away from the bearing space and an inner layer (5,7) of a zirconium material.