| 摘要 |
<p>A sliding bearing formed by providing annular grooves (2a) in an inner circumferential surface of a bearing alloy layer (2), and covering the bearing alloy layer (2) with an intermediate layer (3) and an overlaying layer (4) in the mentioned order, wherein, when the bearing is worn, the overlaying layer (4) and intermediate layer (3) which remain in the annular grooves (2a), and ridges (2b) between the annular grooves (2a) in the bearing alloy layer (2) are exposed. Let h equal the height of the ridges (2b), t the thickness of the intermediate layer (3), t a longitudinal axis and h a lateral axis in the present invention. The thickness t and height h are set in the ranges in which they satisfy the conditions of the following three expressions: 1≤h∫5, t≤2h/3+1/3, t≤3. More preferably, they are set in the ranges in which they satisfy the conditions of the following two expressions: 1≤h∫5, t≤h/2. The unit of the h and t is νm. This enables an initial abrasion resistance, and the post-abrasion seizure resistance and compatibility of the overlaying layer to be improved.</p> |
