Abstract: A bearing metal for large size engines having excellent compatibility and as well as embeddability even when used under a poorly lubricated condition. Such bearing metal consists of three or four layers, including a layer of a bearing alloy which contains more than 50% and up to 65% by weight of tin, with the remainder being made up of aluminum, and which may also include less than 0.5% by weight of copper. This bearing alloy has a hardness at high temperature exceeding 100.degree. C. lying between that of aluminum-tin bearing alloys which contain up to 50% by weight of tin and that of tin base or lead base white metal bearing alloys.

Abstract: A multi-layer bearing is obtained by laying and distributing metal powder which contains aluminum as a main component thereof, uniformly on a steel plate or a steel plated with Ni or the like in the form of a multi-layer composite metal plate, cold rolling the metal powder loaded plate and then sintering the same into a sufficiently bonded composite material. There is good adhesion between the steel plate and the sintered metal powder, and the bearing material is excellent in fatigue resistance and is satisfactory in surface properties as well.

Abstract: A multi-layer metal bearing for use in a large-size engine or the like has three layers including a steel backing layer, a bonding or an intermediate layer of aluminum or aluminum alloy, and a bearing alloy layer consisting of more than 50% up to 65% by weight of tin, more than 0.5% up to 1.5% by weight of copper, and the remainder being essentially aluminum. The hardness of this bearing alloy at a relatively high temperature such as 100.degree. C. or higher is in the mid-range between that of the convention Al/Sn bearing alloy having 50% by weight or less of tin and that of the conventional white metal bearing alloy. This multi-layer metal bearing for use in a large-size engine presents a remarkably improved resistances against load and fatigue.

Abstract: A composite bearing composed of a bearing alloy consisting of 2-8% Zn, 2-8% Si, 0.1-3% Cu, and 0.1-3% Pb all by weight with the remainder being aluminum and a steel backing lined with said bearing alloy. This bearing alloy has outstanding non-sticking property and fatigue strength and is best suited for medium and high speed diesel engine bearings. This bearing alloy may further contain 0.2-7% in total of one or more elements selected from the group consisting of Mg, Ni, and Bi with their respective composition limits being 0.1-2%, 0.1-3% and 0.1-2% by weight.

Abstract: Bearing alloys are made by adding chromium, one or more rare earth elements and/or magnesium to the conventional Sn-base white metal bearing alloys. The addition of such additives, even only with slow cooling after casting, enables the refining of cubic crystal grains and acicular crystal grains in the alloy structure, improving the bearing characteristics. The amounts to be added are specified to be within the ranges between 0.005% and 0.5% by weight for Cr, 0.001% and 1% by weight for rare earth element or elements and 0.001% and 1% by weight for Mg.

Abstract: This invention is an alloy for use as a bearing lining as an alternative to the known "white metals".The alloy is predominantly of tin, but includes from 0.001 to 0.5% by weight of chromium and from 0.005 to 0.5% by weight of cobalt.The micro-structure is good and the alloy can be bonded to a steel backing, and is strong and ductile.

Abstract: This invention discloses a method for manufacturing a multi-layer sliding material, said method substantially comprising laying and distributing metal powder which contains aluminum as a main component thereof, uniformly on a steel plate or a steel plated with Ni or the like in the form of a multi-layer composite metal plate, cold rolling the metal powder loaded plate and then sintering the same into a sufficiently bonded composite material. In accordance with the present invention, there is provided a multi-layer sliding material which has high adhesion between the steel plate and the sintered metal powder, is excellent in fatigue resistance and is satisfactory in surface properties as well as a method for manufacturing said multi-layer sliding material in a simple and inexpensive manner.

Abstract: An improved bearing provided with either one or two or more of an oil groove, oil indentation, oil indent pattern and the like formed in the internal surface of a semi-circular cylindrical bearing or semi-circular bearing component. The sum of the lengths, measured on the internal surface, of the formed oil groove, oil indentation or the like appearing in any cross section of main loaded area in the axial direction being made to be 5- 50% of the width of the bearing enables a smooth swinging or rocking motion of the shaft by allowing an oil film or the like to always be formed on the main loaded area while preventing early fatigue failure.