| 摘要 |
PROBLEM TO BE SOLVED: To improve abrasion resistance of a thrust bearing of a bearing sleeve of a crankshaft. SOLUTION: A circumferential oil passage 4 is formed inside a shell 6 of the bearing sleeve 1. This oil passage 4 is connected to an outside groove 7 via a hole 2. The groove 7 communicates with one of flanges 8 of an end part of the shell 6. Lubricating oil is supplied to the flanges 8 by this oil passage 4, the hole 2, and the groove 7 to improve lubrication in the main shaft load direction.
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