| 摘要 |
The present invention provides a half thrust bearing in a semicircular ring shape for receiving an axial force of the crankshaft of the internal combustion engine, that include a back metal layer, a bearing alloy layer and a resin slide layer, or a bearing alloy layer and a resin slide layer. The resin slide layer constitutes a slide surface receiving the axial force, and the half thrust bearing includes thrust reliefs formed on a side receiving the axial force and adjacent to both circumferential end portions thereof so that a wall thickness of the half thrust bearing becomes thinner toward the circumferential end portions. At least the thrust relief on a rear side in a rotational direction of the crankshaft has a thrust relief length which becomes larger toward an outer end portion from an inner end portion in a radial direction of the half thrust bearing. |
