| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pulley device in which sealability of a bearing can be enhanced, by preventing foreign matter from staying between a sealing device and a slinger. <P>SOLUTION: This pulley device 1 includes: a rolling bearing 10 having a nonrotatable inner ring 12, a rotatable outer ring 11 and a seal 15 for sealing a part between the inner-outer rings; and a pulley body 20 fitted around the outer ring 11 by integrally forming an outside cylindrical part 21 of becoming a belt transfer part, an inside cylindrical part 23, and an annular disk part 22 for connecting them. The pulley device includes the slinger 25 for covering one of end surfaces in the axial direction between the inner-outer rings by extending from an end part of the inside cylindrical part 23. The slinger 25 has a drain hole 26 for penetrating through the vicinity P1a of the outer ring 11 of a slinger inside space P1 between the slinger 25 and the seal 15, and an outside space, and an inner peripheral side end part covers the drain hole 26 by being folded back toward the outer peripheral side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
