Federal-mogul World Wide, Inc.

Brian L Bank

James Robert Toth

A multilayer engine bearing ( ) includes a steel backing ( ) having a liner ( ) of bearing metal of either copper-lead or aluminum alloys formed on the backing ( ). A multilayer overplate ( ) is formed on the base lining member ( ) and includes at least a first layer ( ) electrodeposited from a bath at a first current density to a desired thickness, and at least one additional layer ( ) electrodeposited from the same bath but at a different current density and to a desired thickness to yield a composite lamellar overplate structure having layers with differing deposit characteristics, such as hard and soft layers, generated from the same bath at different current densities.

Bearing having multilayer overlay and method of manufacture

A multilayer engine bearing (,) includes a steel backing (,) having a liner (,) of bearing metal of either copper-lead or aluminum alloys formed on the backing (,). A multilayer overplate (,) is formed on the base lining member (,) and includes at least a first layer (,) electrodeposited from a bath at a first current density to a desired thickness, and at least one additional layer (,) electrodeposited from the same bath but at a different current density and to a desired thickness to yield a composite lamellar overplate structure having layers with differing deposit characteristics, such as hard and soft layers, generated from the same bath at different current densities.

A multilayer engine bearing (,) includes a steel backing (,) having a liner (,) of bearing metal of either copper-lead or aluminum alloys formed on the backing (,) to define a base lining member (,) of the bearing (,). A multilayer overplate (,) is formed on the base lining member (,) and includes multiple lead-free soft layers (,) separated by lead-free hard layers (,). The relative thicknesses of the overplate layers may be controlled to provide a macro hardness gradient across the thickness of the overplate (,) such that, for example, the overplate (,) may be softer near its top region (,) as compared to its bottom region (,).

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Hartland, MI, United States of America

Brian L Bank