Rolling bearing convenient to adjust at high speed

The invention relates to the technical field of rolling bearings, in particular to a rolling bearing convenient for high-speed adjustment, which comprises an inner ring and an outer ring sleeved on the outer side of the inner ring, a retainer is fixedly mounted between the outer wall of the inner ring and the inner wall of the outer ring, a rolling body is embedded in the retainer, two side walls of the rolling body are respectively attached to the inner ring and the outer ring, and the inner ring is sleeved on the outer ring. An annular groove is formed in the center line of the inner wall of the retainer in the circumferential direction of the retainer, and limiting grooves of the rolling bodies are symmetrically formed in the two sides of the groove. The cavity is formed in the inner ring, lubricating oil can be stored in the cavity, the installation space of a traditional oil supply channel and a traditional oil return channel is saved, the lubricating oil can be automatically added into the rolling beari