Rolling bearing component

US9416822B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Edgar Streit · Poppenlauer, DE
• Oskar Beer · Landshut, DE

Key dates

• Filing date: Mar 7, 2013
• Grant date: Aug 16, 2016
• Expiry date: Mar 7, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24983
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rolling bearing component (2, 3, 4) has the following features: a nitrided surface zone (5), with a nitrogen content decreasing from the outside inwards, and a core zone (6), internal compressive stresses decreasing from the outside inwards in the surface zone (5), a surface hardness of 870 to 2000 HV 0.3 at a depth of 0.04 mm, wherein—the hardness at a depth of 0.3 mm is not more than 250 HV 0.3 less than the surface hardness.