| 摘要 |
PROBLEM TO BE SOLVED: To provide a pulley unit with a one-way clutch, requiring a less number of parts, securing its size enough for the one-way clutch and having improved durability. SOLUTION: The one-way clutch 5 is provided between a shaft 3 and a pulley 4 concentrically arranged therearound. The one-way clutch 5 has a biting member 13 and an energizing member 14 to be rotated integrally with the outer ring of the one-way clutch 5, the biting member 13 being moved in the direction of cancelling biting with the centrifugal force of the outer ring at a predetermined rotating speed or higher and the energizing member 14 having energizing force big enough to allow the movement thereof. The pulley 4 is integrated with the outer ring of the one-way clutch 5. A grease containing an ether base oil and a urea thickener is filled between the outer ring and the inner ring of the one-way clutch 5. |
