HALF BEARING FOR CRANKSHAFT OF INTERNAL COMBUSTION ENGINE

PROBLEM TO BE SOLVED: To provide a half bearing for a crankshaft of an internal combustion engine which is excellent in embedding performance of foreign matter which accompanies an oil and is mixed therein. SOLUTION: In an inner peripheral surface in the vicinity of peripheral end 7 of a lower half bearing 3 which is a relative rotation tip side of a crankshaft 20 with respect to an oil groove 4 in an upper half bearing 2, a groove depth of a peripheral groove 6 is gradually deepened toward the relative rotation tip side of the crankshaft 20. Foreign matter in the vicinity of the peripheral ends 7 of inner peripheral surfaces of the half bearings 2, 3 is forced to flow to the relative rotation tip side of the crankshaft 20 in which the depth of the peripheral groove 6 is deeper without being pressed in the bottom of the peripheral groove 6. Therefore, a part in which a large amount of foreign matter is locally embedded is hardly formed in the vicinity of the peripheral ends 7 of inner peripheral surfaces of the half bearings 2, 3. As a result, foreign matter can be embedded so as to be dispersed in the peripheral groove 6 accommodating a soft bearing material 8. COPYRIGHT: (C)2011,JPO&INPIT