Patent · US Active

Rolling-element bearing and method of manufacturing thereof

US9322074B2 · kind B2 · utility

3Cited by

16References

11Claims

0Family size

Assignee

AKTIEBOLAGET SKF · SE

Inventors

Juergen Gegner · Forchheim, DE
Wolfgang Nierlich · Schweinfurt, DE
Armin Olschewski · Schweinfurt, DE
Arno Stubenrauch · Aidhausen, DE

Key dates

Filing date	Jan 28, 2014
Grant date	Apr 26, 2016
Priority date	—
Expiry date	Jan 28, 2034

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16C2361/61
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A rolling-element bearing includes an inner ring made of steel and having an inner-ring raceway, an outer ring having an outer ring raceway, and ceramic rolling elements which roll on the inner-ring raceway and on the outer-ring raceway. The inner ring has been subjected to a heat treatment to harden it. The heat treatment is concluded with the performance of a final heat-treatment step at a predetermined temperature. In the inner ring, compressive residual stresses are formed in an outer layer by cold working in the region of the inner-ring raceway. The inner ring also has been subjected to a bluing treatment.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.