Sliding bearing for internal combustion engine

A sliding bearing for an internal combustion engine, comprising a pair of semi-cylindrical bearings combined with each other into a cylindrical body to support a crankshaft, a circumferential oil groove being formed to extend in a circumferential direction on an inner circumferential surface of one of the semi-cylindrical bearings,

• wherein the circumferential oil groove includes a central portion in the center of a circumferential length of the one of the semi-cylindrical bearings,
• wherein along an overall axial length of at least one of both circumferential end surfaces of the one of the semi-cylindrical bearings, facing in a same direction as a rotational direction of the crankshaft, an axial groove exists between the circumferential end surface and an opposite circumferential end surface of the other semi-cylindrical bearing,
• wherein the axial groove is defined by a slant surface formed over an overall axial width of the sliding bearing, along the inner circumferential surface and the one of the circumferential end surfaces of at least one of the semi-cylindrical bearings,
• wherein the circumferential oil groove and the axial groove communicate with each other, depths of the circumferential oil groove in the communication portion and the axial groove in the one of the circumferential end surfaces being different from each other, and a groove bottom of the circumferential oil groove being located at a position displaced to a side of the inner circumferential bearing surface from a groove bottom of the axial groove, and
• wherein a cross-sectional area of the circumferential oil groove in the communication portion is larger than a cross-sectional area of the axial groove.