| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a cage for a roller bearing lightweight and compact with large strength and superior flexibility, heat resistance and oil resistance, and to provide the roller bearing having the cage for the roller bearing. <P>SOLUTION: The surface of an annular body part 20, made of cold-rolled steel formed with a pocket by connecting two annular parts by a plurality of pole parts, is laminated with layers by electroplating so that the adjacent layers are formed of mutually different metals or alloys, to thereby form a multilayer film 21. <P>COPYRIGHT: (C)2007,JPO&INPIT |
