Lip-type shaft seal

US7066471B2 · kind B2 · utility

Assignee

• Ina Schaeffler KG · DE

Inventors

• Elmar Mause · Schweinfurt, DE
• Harald Peschke · Veitsbronn, DE
• Wolfram Kruhoffer · Herzogenaurach, DE
• Thomas Traudt · Pegnitz, DE
• Horst G. Krischer · Westfield, US

Key dates

• Filing date: Oct 2, 2003
• Grant date: Jun 27, 2006
• Expiry date: Oct 2, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2360/42
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A lip-type shaft seal is made of elastic material with a Shore A hardness of ≦75, includes a radial sealing lip, which has a sealing edge to bear against a rotating component and terminates in a axial sealing lip, which has a sealing edge to rests in installed state against a contact surface. The axial sealing lip extends at an angle of ≧35° in relation to a symmetry axis of the shaft seal, when the axial sealing lip has not been installed yet and is under no tension, and extends from the sealing edge of the radial sealing lip at a length of ≧1.4 mm. When the shaft seal is installed, the axial sealing lip rests against the contact surface at an axial overlap of 0.05 to 0.55 mm.