| 摘要 |
PROBLEM TO BE SOLVED: To prevent shortening of service life due to seizure by suppressing occurrence of sound of a cage and improving lubricity in a bearing. SOLUTION: This cage 4 is composed of a pair of metallic annular bodies 10, 10 axially connected mutually. Each metallic annular body 10 has a plurality of substantially hemispherical pocket parts 11 storing a ball 3 of a rolling body and allowing its rolling sufficiently when axially connected and a plurality of plane parts 12 provided between adjacent substantially hemispherical pocket parts 11 and 11. A non-metallic material 20 is insert-molded on an inner face of the substantially hemispherical pocket part 11 of a corrugated metallic annular body 10. That is, synthetic resin and synthetic rubber being the non-metallic material 20 are insert-molded and bonded by vulcanization on the inner faces of a pair of substantially hemispherical pocket parts 11. COPYRIGHT: (C)2007,JPO&INPIT
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