| 摘要 |
<p>[Problem] To prevent the generation of mist and particulate, and to prevent pressure fluctuation and vacuum quality deterioration on a vacuum side. [Solution] A rolling bearing used in a power transmission device for transmitting power such as turning force, characterized in that a magnet for holding in a lubrication portion of the rolling bearing a lubricating magnetic fluid for lubricating the lubrication portion is provided on at least one side of an outer race of the rolling bearing, and an annular yoke made of a magnetic material loosely fitted to a rotating shaft is provided on the opposite side of said magnet relative to said outer race.</p> |
