Rolling bearing of ceramic and steel engaging parts

US8844140B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Oskar Beer · Landshut, DE
• Franz-Josef Ebert · Hammelburg, DE
• Gerhard Kreiselmeier · Dittelbrunn, DE
• Edgar Streit · Poppenlauer, DE

Key dates

• Filing date: Oct 27, 2011
• Grant date: Sep 30, 2014
• Expiry date: Oct 27, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49709
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A roller bearing having two cooperating rolling parts of which one is of ceramic and the other of a steel. The steel part is of such structure and/or material and/or is so produced to cause residual compressive stresses to form beneath the contact surface of the steel part, at least in a load-free state, down to a depth.