| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a bearing for an oil pump which can supply the operating oil early to the entire inner peripheral surface of the bearing when the oil pump is first operated, in spite of that the operating oil is hard to remain inside during the oil pump inspection. <P>SOLUTION: In the inner peripheral surface of the bearing 1, two or more circumferential grooves 6 are formed which provide communication between oil grooves 4 opened to both ends in the axial direction of the bearing 1, and oil sumps 5 not opened to both ends in the axial direction of the bearing 1 and not having contact with the oil grooves 4. Therefore, the operating oil during oil pump inspection can be withdrawn by vacuum, and a bearing alloy layer 3 can be prevented from corrosion due to deterioration of the operating oil. When the oil pump is first operated, part of the operating oil flowing through the oil grooves 4 flows branching to the two or more circumferential grooves 6, and the operating oil can be supplied early to an area away from the oil grooves 4 on the inner peripheral surface of the bearing 1 through the oil sumps 5. <P>COPYRIGHT: (C)2013,JPO&INPIT |
