| 摘要 |
A method of assembling a double-row ball bearing of a preload-type includes the steps of: (a) inserting a plurality of balls in a crescent-shaped gap formed between an outer race and an inner race which is displaced with respect to the outer race; (b) producing a temperature difference. e.g. by heating the outer race 11 by a heating coil 14 to a temperature of 100 - 150 DEG C to expand the outer race; (c) distributing the balls between the races at equal intervals; and (d) disposing the outer race and the inner race concentrically with each other. As a result of the heating step, the negative clearances between the outer and inner races and the balls are reduced or removed, and thus, the distribution of the balls at equal intervals can be achieved without causing flaws by dragging of the balls and without causing indentations in the raceway surfaces and in the surfaces of the balls. <IMAGE> |
