Bearing arrangement with a shaft and a needle bearing

US8585299B2 · kind B2 · utility

Assignee

• Schaeffler Technologies AG & Co. KG · DE

Inventors

• Stefan Hess · Erlangen, DE
• Peter Solfrank · Frensdorf, DE
• Patrick Ullmann · Herzogenaurach, DE
• Alexander Kern · Trostberg, DE

Key dates

• Filing date: May 28, 2010
• Grant date: Nov 19, 2013
• Expiry date: Aug 14, 2030

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2361/53
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A bearing arrangement is provided having a shaft (1) with a bearing journal (2, 3), and a needle bearing (9) which is arranged thereon and has a cage (16) and needle rollers (11) accommodated in the latter. The bearing journal is provided with a hardened and precision-machined inner raceway (10) for the needle rollers and steps back radially in relation to axial shoulders (12, 13) of adjacent shaft sections (4, 5, 6, 7), and the axial shoulders serve as run-on surfaces for the axial end sides (14, 15) of the cage fitted between the axial shoulders. In this case, relief grooves (17, 18) are provided, with the relief grooves extending on both sides of the inner raceway and each being dimensioned in such a manner that, over the entire circumferential region of the axial shoulders, the axial distance (D) thereof from each other is significantly larger than the inner raceway width (B1) existing therebetween.