Axial thrust bearing

US7470064B2 · kind B2 · utility

Assignee

• MAN B&W Diesel AG · DK

Inventors

• Hermann Link · Donaueschingen, DE
• Ferdinand Werdecker · Walchensee, DE

Key dates

• Filing date: Jul 5, 2003
• Grant date: Dec 30, 2008
• Expiry date: Apr 12, 2024

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/24
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An axial thrust bearing for axially supporting a rotating shaft of an exhaust gas turbocharger connected to a lubricating oil circuit includes a profiled annular bearing surface which contacts an essentially flat sliding surface, the bearing surface having a plurality of radially extending grooves which are open on the outside circumference, a plurality of coplanar flat trap surfaces located between respective pairs of adjacent grooves, and a plurality of wedge surfaces located between adjacent pairs of respective grooves. Each wedge surface forms a lubricating oil gap which narrows circumferentially toward an adjacent flat trap surface and which narrows radially toward the outside circumference.