| 摘要 |
<p>A pulley unit, comprising a pulley and a rotor disposed rotatably each other and concentrically to each other, a one-way clutch installed in an annular space formed therebetween, a roller bearing installed on both sides of the one-way clutch, and a seal ring for sealing the annular space, wherein both the one-way clutch and roller bearings use the inner diameter surface of the pulley as the outer ring route thereof and the outer diameter surface of a shaft body as the inner ring route thereof, and a roller bearing retainer is reduced in diameter on the outer diameter side of the seal ring side annular portion thereof to increase a lubricating oil storage volume between the roller bearings and the seal ring.</p> |
