| 摘要 |
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 outer body extends into a radial recess or groove of the insert. The projection and the recess interlock the insert and the outer body so as to prevent relative movement.
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