Wrapped slide bearing bushing

US6340534B1 · kind B1 · utility

Assignee

• KS GLEITLAGER GMBH · DE

Inventors

• Wolfgang Bickle · Reilingen, DE
• Werner Schubert · Wiesloch, DE

Key dates

• Filing date: Nov 10, 1999
• Grant date: Jan 22, 2002
• Expiry date: Nov 10, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/249927
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A wrapped slide bearing bushing consists of a composite bushing material including a metal bearing layer, a porous support layer sintered thereon, and a PTFE-based sliding layer, forming the sliding surface of an associated sliding member, said sliding layer also filling the pores of said support layer, and including at least 60 vol % of PTFE, 15-25 volume percent of a metal filler, preferably lead, and optionally 8-12 volume percent of PVDF. To obtain a low coefficient of friction, only varying in a narrow range over a long time period, said slide bearing bushing is formed such that the sliding layer includes 1-3 volume percent of carbon fibers, said carbon fibers being oriented substantially in a preferred direction relative to said composite bushing material, while the relative movement of said bearing bushing and said associated sliding member is substantially transverse to said preferred direction.