Bearing unit, in particular railway axlebox bearing unit, having improved anti-fretting behavior
AssigneeSKF Engineering and Research Centre B.V.
InventorsJohn Vincent Skiller, Vedran Tadic, Marc Defossez, Dario Bertorelli, Maurizio Martinetti, Enrico Rolih
Life of this patent
Estimating the term…
Abstract
A unit comprises a double row taper rolling element bearing (1) having an inner ring means (12, 13) and an outer ring means (6), said inner ring means being fitted on an axle stub (5) between two opposite mounting faces (7, 10), means (19) being provided for preventing fretting corrosion between at least one of said mounting faces and the inner ring means. At least one mounting face and the inner ring means engage each other by means of a polymer support ring (19). The bearing unit can be applied as a railway axlebox bearing unit.
Claims28
Railway axlebox bearing unit, comprising a rolling element bearing having an inner ring means and an outer ring means, said inner ring means being fitted on an axle stub between two opposite mounting faces, wherein said at least one mounting face and the inner ring means is contacted by a non-metallic polymer support ring which constitutes a separate engineering piece for preventing fretting corrosion between at least one of the two mounting faces and the inner ring means.
Dependencies are inferred from the claim text.