Bearing with electric insulators and thermal conductor

US10050490B1 · kind B1 · utility

Assignee

• AKTIEBOLAGET SKF · SE

Inventors

• Mathieu Hubert · Torino, IT
• Igor Dorrestijn · Woerden, NL
• Karl Pries · Traun, AT

Key dates

• Filing date: Jun 1, 2017
• Grant date: Aug 14, 2018
• Expiry date: Jun 1, 2037

Classification

• Technology area (CPC H): Electricity
• CPC primary: H02K2213/03
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An insulated bearing assembly for coupling a shaft with an outer member includes an inner race disposed upon the shaft and an outer race disposed about the inner race and having an outer circumferential surface and axial ends. An annular insulator is formed of an electrically insulative and thermally conductive material and is coupled with either the outer race or the inner race such that the insulator is generally disposed between the outer race and the outer member or between the inner race and the shaft. A polymeric member has an annular portion(s) disposed against one of the two axial ends of the coupled outer race or inner race and an axial portion(s) extending from the annular portion and coupled with the insulator member so as to retain the insulator member coupled with the outer race or the inner race when the bearing assembly is separate from the outer member.