| 摘要 |
<p>A lubrication film (5) is formed of a solid lubricant including PTFE (polytetrafluoroethylene) having a mean molecular weight of not more than 25,000 and a mean particle size of not less than 5 mu m and less than 10 mu m. The films (5) adhere to balls (3), raceway tracks (1a, 2a) and a retainer (4) of a bearing assembly. The solid lubricant thus adhering to each portion has a property that PTFE particles are dispersed without a binder. <IMAGE></p> |
