| 摘要 |
PROBLEM TO BE SOLVED: To recycle a holding plug 1 for a full type bearing and facilitate installation operation for the full type roller bearing 5. SOLUTION: In this full type roller bearing 5, the holding plug 1 used for preventing rollers 7 from being released is injection-molded in a columnar shape by using polyurethane as a raw material. A recessed part 1a is formed at the axial one end center part of the holding plug 1, and at least the bottom corner parts of the recessed part 1a are formed in spherical shapes. By this, the specific function of the holding plug 1 can be secured, a variation in outer dimensions can be suppressed, and foreign matter remains less in the recessed part 1a in washing the holding plug 1. As a result, the recycling of the holding plug 1 is enabled. In addition, since scattered dents corresponding to a gate in the injection molding are disposed in the recessed part 1a and not projected to the surface, the attitude of the holding plug 1 can be stabilized in a step for carrying the holding plug by an auto feeder. COPYRIGHT: (C)2005,JPO&NCIPI
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