HOLDER FOR CYLINDRICAL ROLLER BEARING, AND CYLINDRICAL ROLLER BEARING

摘要

PROBLEM TO BE SOLVED: To provide a resin holder for a cylindrical roller bearing, capable of preventing damage or whitening upon forcible removal in injection molding or upon assembly into a bearing, and having excellent heat resistance and oil resistance.;SOLUTION: A holder 5 is used in a cylindrical roller bearing 1, and comprises a pair of ring parts and a plurality of pillar parts coupling these rings. The holder 5 is an injection-molded body of a resin composition. The resin composition is a composition obtained by combining fibrous reinforcement material with base resin, wherein the base resin mainly consists of polyamide resin composed of a dicarboxylic acid component and a diamine component. The dicarboxylic acid component mainly consists of terephthalic acid. The diamine component mainly consists of 1,10-decane diamine. The fibrous reinforcement material contains 15-50 mass% glass fiber or 10-35 mass% carbon fiber, based on the whole resin composition. The holder 5 has, at an outer diameter side end part of the pillar part, a portion to be forcibly removed in release of injection molding.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT