Tadao Satô and Toshio Saitô
The material and the bearing quality of Pb-Ca-Ba-Na and Pb-Sb-Sn-As alloys were studied and the following results have been obtained. At first, difficulties were experienced in the melting and casting process of each alloy, but in the operation of the lining proccess, a large bearing was manufactured with less difficulties of casting than white metals. In each metallic structure, segregation and grain growth of crystals were not observed. The alloys with Brinell hardness number lower than 30 showed good affinity and anti-frictional quality to lubricant oil. The hardness of the each alloys could be controled through increase and decrease of additional element, thus saving the consumption of tin. So the material and the bearing quality of these bearing alloys were found to be more excellent than those of JIS, WJ 6, 7, 8 and 9 alloys.
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