METHOD FOR MANUFACTURING CONICAL ROLLER BEARING RETAINER, CONICAL ROLLER BEARING RETAINER AND CONICAL ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a conical roller bearing retainer capable of suppressing the deterioration of yield although a mold structure is simple and capable of suppressing the deterioration of strength of the conical roller bearing retainer.;SOLUTION: A plurality of resin injection gates 50 are arranged on the inner circumferential surface 5b of a small-size annular part 5, a gate size is expanded alternately in the circumferential direction, the number of the resin injection gates 50 is four or more and is less than a half of the number of pocket parts 9, and a plurality of weld parts W1 to W6 formed on a conical roller bearing retainer 1 are formed on a position separated from a corner part of the pocket part 9.;COPYRIGHT: (C)2014,JPO&INPIT