Patent ID: 6109794
Filing Date: 2000-08-29
Classification: F16C,H01R,Y10S

Abstract:
A rolling contact bearing unit for a vehicle wheel, fitted with at least one sealing device closing an annular gap formed between a radially outer race and a radially inner race of the bearing, wherein said sealing device comprises at least one sealing element of an electrically conductive elastic material fast with a first, rotating or stationary element of the bearing and slidingly contacting an electrically conductive surface integral with a second element of the bearing in relative rotation with respect to said first element, so as to allow the passage of electric current between the radially inner and the radially outer races of the bearing, wherein, said sealing element of an electrically conductive elastic material co-operates with said sealing device so as to form at least one hermetically sealed chamber containing electrically conductive grease, said chamber being interposed between the external environment and inner parts of the bearing containing lubricating grease.