JPS6479418A - Compound retainer for rolling bearing and manufacture thereof - Google Patents

Abstract

PURPOSE:To improve the strength of a retainer and the supply of solid lubricative material out of the retainer by using the surface of a pocket part of the retainer accepting a rolling element as a self-lubricative sintered body, and forming other parts into a reinforced material consisting of a metal or an alloy. CONSTITUTION:A self-lubricative sintered body forming a surface part 1 of a retainer of at least a pocket part causes friction with a rolling element to be inserted into this pocket part, and thereby a thin film of solid lubricative material contained in the self-lubricated body is formed on each surface of the rolling element and a bearing ring. And, when the self-lubricative sintered body is joined to an inner circumferential surface 3 and/or an outer circumferential surface 4 of the retainer as well, the self- lubricative sintered body and the bearing ring are directly made to rub with each other, forming a thin film of the solid lubricative material on the surface of the bearing ring, and it functions as lubricating ability, and a part 2 of another reinforced material functions as durability against the contact or impact of the rolling element and the bearing ring. With this constitution, it has both lubricative effect and strength so that there is such an effect that improves service life as compared with the conventional retainer of the self-lubricative sintered body.