| 摘要 |
PROBLEM TO BE SOLVED: To stabilize the dimension accuracy of respective parts in resin molding, to shorten the resin molding time, improve the lubricating performance, and reduce the manufacturing cost. SOLUTION: A lot of ball rolling bodies 3 are interposed between an outer ring 1 and an inner ring 2 in the ball bearing, and resin interval bodies 4 are assembled between adjoining rolling bodies 3, 3 so as to prevent the rolling bodies 4 from contacted with each other. The resin interval body 4 has a pair of partial spherical parts 5, 5 corresponding to the spherical shapes of the adjoining ball rolling bodies 3, 3 in its both sides, and a though hole 6 for storing lubricant is formed between the partial spherical parts 5, 5. A plurality (eight in this illustration) of recesses 8 divided circumferentially are formed in the outer circumference of the interval body 4.
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