| 摘要 |
PROBLEM TO BE SOLVED: To easily decrease the feed rate of a lubricating oil for each unit time.SOLUTION: A lubricating oil flow is induced to an overlap area 90 that overlaps with a pressure application position in an axial direction on a sealing surface 53 through an induction passage 92 formed to a seal ring 31, and thereby even if the feed rate of the lubricating oil is decreased, the lubricating oil of the amount that is settled to some degree is supplied to the overlap area 90 first. Therefore, even if the contact pressure of the overlap area 90 is higher by several times than that of other areas, the oil film cutting in the overlap area 90 is effectively inhibited. Moreover, for other areas between the overlap areas 90, the contact pressures are considerably lower than those of the overlap areas 90, the lubricating oil is diffused between the sealing surface 53 and a slide contact surface 54 to form an oil film of a uniform thickness, and thereby the effective lubrication is performed, and the oil film cutting is not caused. |
