Labyrinth seal having labyrinth rings with different wear resistances

US9151391B2 · kind B2 · utility

Assignee

• AKTIEBOLAGET SKF · SE

Inventors

• Andreas Kern-Trautmann · Estenfeld, DE
• Mathias Seuberling · Nidderau, DE

Key dates

• Filing date: Nov 28, 2012
• Grant date: Oct 6, 2015
• Expiry date: Nov 28, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49826
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A labyrinth seal includes a first labyrinth ring and a second labyrinth ring. In an installed state of the labyrinth seal, the first labyrinth ring and the second labyrinth ring engage in each other in an at least partially overlapping manner and are rotatable relative to each other. Furthermore, in the installed state, mutually-opposing surfaces of the first and of the second labyrinth ring have different wear resistances.