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1. (WO2018030274) METHOD FOR ELECTRON BEAM IRRADIATION OF ROLLER BEARING RETAINER

Pub. No.:    WO/2018/030274    International Application No.:    PCT/JP2017/028261
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Fri Aug 04 01:59:59 CEST 2017
IPC: F16C 33/46
C08J 7/00
F16C 19/26
F16C 33/66
Applicants: NTN CORPORATION
NTN株式会社
Inventors: TADA Masami
多田 晶美
SATO Yoji
佐藤 洋司
Title: METHOD FOR ELECTRON BEAM IRRADIATION OF ROLLER BEARING RETAINER
Abstract:
Provided is a method for electron beam irradiation of a roller bearing retainer, with which an outer diameter surface and both end surfaces of the retainer can be irradiated with an electron beam simultaneously in a uniform manner, and the energy application rate of the electron beam can be applied to the greatest extent to an outer diameter surface film, which is where a sliding characteristic is most necessary in the roller bearing retainer. In this method for electron beam irradiation of a cylindrical roller bearing retainer (1) having multiple pocket parts for retaining rolling bodies, a resin layer formed on the outer diameter surface (5) and on both end surfaces (7) of the cylindrical roller bearing retainer (1) is irradiated with an electron beam from the outer diameter surface in a nitrogen atmosphere while the retainer is rotated around the cylinder axis.