SYNTHETIC RESIN RETAINER, MANUFACTURING METHOD THEREOF, AND ROLLING BEARING

摘要

PROBLEM TO BE SOLVED: To provide a synthetic resin retainer capable of raising strength on a welded section rather than a conventional retainer, and a rolling bearing which is excellent on durability. SOLUTION: The synthetic resin retainer for a rolling bearing is manufactured by using a retainer molding die having a first resin sump leading to an opening arranged at a position coincident with a welding position of a cavity and a second resin sump leading to the opening arranged on the cavity while being adjacent to the first resin sump and by injection-molding a retainer molding resin composition. Further, the rolling bearing having the synthetic resin retainer thus attained is provided. COPYRIGHT: (C)2011,JPO&INPIT