This is a bearing material in which aluminum alloy and copper alloy comprise a two- or three-layer structure with a steel backing. This structure, whose mechanical strength is high, can be used under lubricated conditions and high-speed/high-load operation. It can be made from a variety of different materials, depending on the application, use conditions and lubrication.

Load capability can be improved by oil holes, grooves, etc., depending on lubrication conditions. In some cases, a dry bearing can also be used under lubricated conditions.