Roller bearing with an improved cage

US4472006A · kind A · utility

Assignee

• AKTIEBOLAGET SKF · SE

Inventors

• Bo Göransson · Sollentuna, SE
• Anders Sahlgren · Mölndal, SE
• Rolf Gustafsson

Key dates

• Filing date: Jun 13, 1983
• Grant date: Sep 18, 1984
• Expiry date: Jun 13, 2003

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2300/02
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The invention relates to a roller bearing having at least one row of rollers, in which the rollers are arranged at an angle to the bearing axis, an inner and an outer raceway for the rollers and a cast plastics cage for the rollers. The cage comprises two coaxial rings (1,2) and bars (3) extending between the rings, the rollers (4) being situated in pockets between the bars. In order to achieve a good positioning of the cage and a good guidance of the rollers when the cage is centered by contacting the rollers, the radial extension of the bars are greater than the radial width of the rings, whereby the bars have a portion (5) in connection to their middle part which portion extends radially inside or outside the pitch circle (6) of the rollers and contacts the rollers on a surface (7) so situated that a normal (8) through the contact of the roller surface with said surface (7) forms an angle (.alpha.) with a line (9) from the center of the bearing through the axis of the roller, the angle (.alpha.) being less than 60.degree.. Further, the cage has a portion at each end of the roller with a roller contact surface (10) so situated that a plane (11) through the contact surface (10) an…