| 摘要 |
PURPOSE:To prevent the clogging of a centrifugal pump part and prevent dusts from being bitten into a bearing slidable part by installing a dust removing part in the centrifugal pump part for feeding lubricating oil. CONSTITUTION:An oil suction hole 6 is formed at the lower edge of a crankshaft 5. In the oil suction hole 6, centrifugal holes 7 and 16 are formed in the radial direction, and a centrifugal pump part is constituted. In said centrifugal pump part, a space region 14 surrounded by a bearing metal 12, crankshaft 5, and a bearing housing 13 is formed. Said space region 14 communicates to the centrifugal holes 7 and 16. Further, the space region 14 communicates to the outside through a small hole 15. Therefore, dusts are collected into the space region 14 and discharged from the small hole 15.
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