| 摘要 |
PURPOSE:To improve lubricating performance as well as heighten the strength of a holder sufficiently by fabricating a holder for holding the rolling body of a roller shaft of fluororesin containing short fibers of a specific diameter. CONSTITUTION:An inner wheel 11 and an outer wheel 12 are made of non-self- lubricating stainless metal, and a ball 13 is formed of self-lubricating carbon. A holder 14 is made of self-lubricating fluororesin containing short fibers of less than 2mum in diameter. This holder 14 is formed by injection molding and the like, but cutting work is not applied to it. Accordingly, the fluff is not generated to the fluororesin, so that the early abrasion or damage of the ball 13 held by the holder 14 does not occur. In addition, the holder made of fluororesin is reinforced by the mixing of the short fibers, and thereby its durability is heightened. |
