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AssigneeDaido Metal Company Ltd.
InventorsTadashi Tanaka, Masaaki Sakamoto, Koichi Yamamoto, Kenji Sakai
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A Cu-Pb system composite bearing has three layers including a backing metal, a bearing alloy layer formed on the backing metal, and an overlay formed on the bearing alloy layer. The Cu-Pb bearing alloy contains 2 to 10% Ni and 0.05 to 1.0% B. An example of the composition of the Cu-Pb system bearing alloy consists of 0.5 to 8% Sn, 15 to 30% Pb, 0.2% or less P, 2 to 10% Ni, 0.05 to 1.0% B and the balance of Cu and unavoidable impurities. The Cu-Pb bearing alloy must have a hardness over HV80. Ni and B contained in the bearing alloy decrease the affinity of the Cu-Pb bearing alloy for tin in the overlay of a tin-containing lead alloy. The corrosion resistance of the bearing is improved by plating the both surfaces of the composite bearing with Sn, Pb or an alloy thereof.
A Cu-Pb system alloy composite bearing with an overlay comprising three layers including a backing metal layer of steel a copper-lead system bearing alloy layer formed on said backing metal layer, and a tin-containing lead alloy overlay formed on said bearing alloy layer,
A composite bearing comprising:
A composite bearing consisting essentially of:
Dependencies are inferred from the claim text.