Rolling contact bearing for supporting heated rolls

US6416228B1 · kind B1 · utility

Assignee

• Fag Oem und Handel AG · DE

Inventors

• Karl Muller
• Gudrun Martin · Euerbach, DE

Key dates

• Filing date: Mar 10, 2000
• Grant date: Jul 9, 2002
• Expiry date: Mar 10, 2020

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S384/905
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A rolling-contact bearing for a shaft journal wherein the outside diameter of the shaft journal is thermally insulated relative to the shaft through which a heat transfer medium flows. The bore of the inner race on the shaft journal is provided with a ceramic layer predominantly of zirconium oxide and a smaller among of yttrium oxide to reduce the heat transfer from the shaft journal to the rolling-contact bearing. The inner race also has lateral surfaces toward the elements securing the bearing on the shaft journal. Those lateral surfaces may be provided with a ceramic layer as well.