Flanged Bearing Ring for a Motor Vehicle Wheel Bearing Unit
AssigneeAktiebolaget Skf
InventorsCornelius Petrus Antonius Vissers, Paolo Re
Life of this patent
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Abstract
A flanged bearing ring is formed of two different materials joined together as a single piece, specifically a radially inner annular insert and a flanged, radially outer lightweight body formed about the insert. The insert has one or more inner raceways and is formed of a hard material, such as bearing steel. The outer body is made of a lightweight material, such as aluminium alloy, with a higher thermal expansion coefficient higher than that of the hard material from which the inner insert is formed. A radial projection formed on the insert extends into a radial groove of the outer body. The projection and the recess interlock the insert and the outer body so as to prevent relative movement.
Claims15
A flanged bearing ring for a motor vehicle wheel, the ring comprising:
- a radially inner, generally annular insert formed of a first material with a first thermal expansion coefficient, the insert having a central axis, at least one raceway extending about the axis, a radially outer surface, and at least one projection extending generally radially from the outer surface;
- and
- a radially outer body formed of a second material with a second thermal expansion coefficient, the second coefficient being greater than the first coefficient, the outer body being disposed about the insert and having a radially outwardly extending flange and at least one radial recess configured to receive the at least one projection of the insert so as to interlock and prevent relative axial displacement between the insert and the outer body.
Dependencies are inferred from the claim text.