Rolling element bearing comprising a zirconium material
AssigneeSKF Industrial Trading and Development Company, B.V.
InventorsAntonio Gabelli, Tin Yau Wan
Life of this patent
Estimating the term…
Abstract
A rolling element bearing comprises an outer ring and an inner ring which enclose a bearing space containing rolling elements which are in rolling contact with the raceways of both rings. At least the contact surface layer of one of the rings and/or rolling elements 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 of a zirconium material.
Claims18
Rolling element bearing, comprising an outer ring with a raceway and an inner ring with a raceway, the outer ring and inner ring together enclosing a bearing space containing one or more rolling elements which are in rolling contact with the raceways of both rings, wherein the inner ring and outer ring each have a contact surface layer contacting the one or more rolling elements and the one or more rolling elements have a contact surface layer contacting both rings, and wherein at least one of the contact surface layers comprises a zirconium material, and wherein at least one or more of the rolling elements has an outer shell of the zirconium material as the contact surface layer which encloses a steel core.
Rolling element bearing, comprising an outer ring with a raceway and an inner ring with a raceway, the outer ring and inner ring together enclosing a bearing space containing one or more rolling elements which are in rolling contact with the raceways of both rings, wherein the inner ring and outer ring each have a contact surface layer contacting the one or more rolling elements and the one or more rolling elements have a contact surface layer contacting both rings, wherein at least one of the contact surface layers comprises a zirconium material, wherein at least one of the inner ring or outer ring has a composite layered structure comprising an outer layer of steel facing away from the bearing space and an inner layer of the zirconium material as the contact surface layer and wherein the at least one contact surface layer comprising zirconium of the inner ring, outer ring or both has a thickness which is of the same order of magnitude as the steel layer.
Dependencies are inferred from the claim text.