| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retainer made of a synthetic resin hardly generating frictional heat or abrasion powder due to contact with balls even in a high-speed rotation range and simple to assemble. <P>SOLUTION: This retainer made of a synthetic resin is so structured that hemispherical pockets 6 for housing a ball 3 are formed at circumferentially equal intervals on confronting surfaces of two annular bodies 5a and 5b axially facing to each other; axially-projecting engagement claws 7 are formed between the pockets 6, 6 adjacent to each other of the annular bodies 5a and 5b; and engagement holes 8 for engaging the engagement claws 7 therewith are formed between the pockets 6, 6 adjacent to each other of the annular bodies. In the retainer made of a synthetic resin, recessed parts 12 forming grease reservoirs are formed at both ends of the pockets 6 of the annular bodies 5a and 5b. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
