Bearing seal and lubricating device

US4186975A · kind A · utility

Assignee

• Messerschmitt Bolkow Blohm GmbH · DE

Inventors

• Alois Schwarz · Putzbrunn, DE
• Karlheinz Mautz · Ottobrunn, DE
• Hubert Frommlet

Key dates

• Filing date: Dec 16, 1977
• Grant date: Feb 5, 1980
• Expiry date: Dec 16, 1997

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16C2326/43
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A bearing seal for the outer and inner blade angle bearings of a rotor hub of a rotary wing aircraft comprises a lubricating oil chamber interconnecting the inner and outer bearings and extending coaxially therebetween. The bearings are provided with sealing rings at their faces opposite the lubricating oil chamber. A shielding member is positioned in front of the face of the outer blade angle bearing facing the lubricating oil chamber. A receptacle is arranged as part of the chamber and positioned in operative relationship with the deflector member for entrapping particles contained in the lubricating oil and separated therefrom by the effect of centrifugal forces as the oil migrates from the inner blade angle bearing toward the outer bearing.