The Timken Company

Graham Frederick Sturman

Hans Unger

Markus Schwerdtfeger

Roland Duval

Roland Gassmann

There is provided a sealing device () for a unitised grease-or oil-lubricated package bearing assembly comprising a twin outer race () and two inner races () arranged next to each other on a shaft (), with their faces abutting. Typically, oil may be present between the said shaft () and the bore surfaces of the bearing inner races (), for the purpose of lubricating parts of the system adjacent to the bearing, but not the sealed, lubricated bearing itself. The scaling device comprises a substantially annular sealing portion () and the provision of a step () in the abutting face of one of the inner races such that a substantially rectangular-section groove () is created on the outside diameter of the abutting inner races (). Located in the groove () is the annular sealing portion () of the annular sealing device () which is compressed between the side walls of the groove () to provide a barrier to (a) ingress of any oil or water present between the shaft () and the bores of the inner race assemblies (), (b) loss of oil which is part of the lubricant sealed within the bearing.

Sealing device for a bearing arrangement

A bearing seal (10) has a casing 11 with a dynamic sealing element (18) such as an EHD at an inner edge. At the outer edge of the casing (11) a static sealing element (14) is provided on an axially extending flange (13). The static sealing element (14) includes opposing outwardly projecting sealing lips (23) which are capable of deflection and which have an outer diameter greater than the diameter of the bearing housing bore when unrestrained. The bearing seal (10) seals the inner and outer race rings of a bearing dynamically and also the outer race ring with the bearing housing statically and positively.

Growing community of inventors

West Hunsbury, United Kingdom

Graham Frederick Sturman