Patent ID: 8708567

Claim:
A sliding bearing having an inner circumferential surface and an outer circumferential surface is applied to a joint of a machine under a surface pressure of 100 to 1000 kg/cm 2 and at a speed within the range of 0.005 to 0.1 m/sec, wherein a first lubricant storage, of which the ratio of the area of the first lubricant storage to the inner circumferential surface is from 15 to 60%, is formed on the inner circumferential surface being in contact with a shaft, wherein a second lubricant storage, of which the ratio of the area of the second lubricant storage to the outer circumferential surface from 15 to 40%, and connected with the first lubricant storage by connection through-holes thus supplying the lubricant to the first lubricant storage, is formed on the outer circumferential surface, wherein the first lubricant storage is composed of a plurality of grooves formed on the inner circumferential surface and the grooves have at least two different shapes and are separated from each other, wherein the grooves include at least one of dimple-shaped grooves having a circular groove-forming surface and pocket-shaped grooves having different axial lengths and circumferential lengths.