Deep groove ball bearing with improved structure

The utility model relates to a deep groove ball bearing, in particular to a deep groove ball bearing with an improved structure, which is applied to a large scale and a super large scale, and belongsto the technical field of bearings. The ball bearing comprises an outer ring, a retainer, an inner ring and a ball rolling body, wherein the ball rolling body is arranged in a pocket of the retainer,the retainer is arranged between the outer ring and the inner ring, and the ball rolling body is connected to an inner raceway of the outer ring and an outer raceway of the inner ring in a rolling manner; the retainer is of a butt joint type split structure and is of a structure with two half retainers. Grooves are formed in the end faces, corresponding to the beam spacing between every two adjacent pockets, of the retainers. An improved retainer structure is adopted, so that the whole weight of the bearing is lighter than that of an original structure, the whole weight reduction effect is achieved, and the bearing is