| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing with a magnetic fluid seal, which is easy to handle, allows easy injection of a magnetic fluid and prevents a rotary shaft from being deteriorated in rotation performance while supporting the rotary shaft. <P>SOLUTION: The bearing 1 with the magnetic fluid seal includes: an inner race 3; an outer race 5 having an extending cylinder 5a protruding in an axial direction from an exposed end surface 3a of the inner race; a plurality of rolling elements 7 interposed between the inner race 3 and the outer race 5; a retaining plate 21 fixed to an inner surface of the extending cylinder 5a of the outer race 5 and retaining a magnet 25 so that the magnet generates a magnetic region between the retaining plate and the exposed end surface 3a of the inner race 3; and the magnetic fluid 27 retained between the magnetic region of the retaining plate 21 and the exposed end surface 3a of the inner race 3. <P>COPYRIGHT: (C)2013,JPO&INPIT |
