| 摘要 |
<p>A half bearing 31 for supporting a crank shaft 5 of an internal combustion engine is provided. The half bearing 31 has a main semi-cylindrical part 71, two crush reliefs 70, and two transition regions 73. Each crush relief 70 has a depth D2 from an imaginary plane at a circumferential end surface of the half bearing 31 which is greater than a depth D1 from the imaginary plane at a connecting position between each crush relief 70 and the transition region 73. A plurality of circumferential grooves 74 extend in a circumferential direction in the main semi-cylindrical part 71 along their entire length in the circumferential direction, and the plurality of circumferential grooves 74 also extend continuously in the transition region 73.</p> |
