Novel deep groove ball bearing

The utility model relates to a novel deep groove ball bearing, which belongs to the technical field of bearings. The prior deep groove ball bearing has the defects that an inner dustproof cover and an outer dustproof cover are easy to be worn, and have complicated and difficult assembly. The novel deep groove ball bearing comprises an outer ring, an inner ring, a steel bead and a dustproof sealing ring, wherein the dustproof sealing ring consists of a dustproof cover and a sealing ring which are bonded together, and has relatively simple structure; the dustproof cover is arranged on the inner surface of the outer ring so as to form interference fit; a groove is arranged on the opposite surface of the sealing ring and the outer surface of the inner ring to form a contact lip which props against the inner ring, so that the dustproof and sealing effects are better and the novel deep groove ball bearing is hard to be worn.