Roller bearing provided with roller skew control and long life characteristics

US5586826A · kind A · utility

Assignee

• SKF Sverige AB · SE

Inventors

• Magnus Kellstrom · Partille, SE
• Joacim Fogelstrom · Lindome, SE
• Henning Wittmeyer · Hilversum, NL

Key dates

• Filing date: Dec 19, 1994
• Grant date: Dec 24, 1996
• Expiry date: Dec 19, 2014

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2240/54
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A roller bearing includes an inner raceway member having an inner raceway surface and an outer raceway member having an outer raceway surface. The inner and outer raceway surfaces are spaced apart from one another to define an annular space and a plurality of rolling elements are disposed in the annular space for engaging the inner and outer raceway surfaces as the rolling elements roll in a rolling direction. During operation of the roller bearing, friction forces arise at regions of the inner and outer raceway surfaces that give rise to positive skew moments. Those regions of the raceway surfaces are designed to have greater frictional characteristics than those regions of the inner and outer raceway surfaces where negative skew moment producing friction forces arise. In that way, the skew of the roller can be controlled to be not excessively negative.