Sealed bearing

US7785014B2 · kind B2 · utility

Assignee

• AKTIEBOLAGET SKF · SE

Inventor

• Johan Falk · Järfälla, SE

Key dates

• Filing date: Jul 7, 2005
• Grant date: Aug 31, 2010
• Expiry date: Mar 18, 2027

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C23/086
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A sealed, self-aligning bearing includes an inner bearing ring with race tracks for rolling bodies, and an outer bearing ring with a race track for the rolling bodies, positioned radially outside the inner bearing ring. At least at one side of the bearing, a bearing seal is arranged axially outside the race tracks and bridges the space between the inner and outer bearing rings. The bearing seal has an outer annular rim fitted in an annular groove in the inner surface of the outer bearing ring and an inner annular rim arranged to slidingly contact the outer surface of the inner bearing ring. The outer rim and the inner rim of the bearing seal are interconnected by an intermediate member formed as a bellows-like thin membrane able to alternatively be stretched and compressed for permitting the bearing rings of the self-aligning bearing to make displacements and/or angular misalignments.