The invention relates to the technical field of bearings, particularly relates to an
air bearing capable of preventing light-load abrasion, and solves the problem that at present, for some special occasions such as a
fiber thread passing device of a
textile machine, pressure of fibers on a bearing is very small, pressing force needs to be externally added for preventing a
steel ball from slippingrelative to an inner ring and an outer ring of the bearing, but
friction force of the bearing is increased. According to the
air bearing, baffle rings are arranged on the outer diameters of the two ends of a bearing inner ring correspondingly, a flow equalizing ring groove is formed in the center of the inner wall of the bearing inner ring, air spraying openings are evenly formed in the center ofthe outer
diameter of the bearing inner ring, air passing holes are formed between the flow equalizing ring groove and the air spraying openings, an air
inlet channel is formed between the flow equalizing ring groove and the end face of the bearing inner ring, an air
pipe joint communicates with the air
inlet channel, third oblique faces are arranged on the inner sides of the baffle rings, secondoblique faces are arranged on the two sides of a bearing outer ring and are parallel to the third oblique faces, a flow dividing sharp corner is arranged in the center of the inner wall of the bearingouter ring, and arc-shaped ring grooves are formed in the two sides of the flow dividing sharp corner, so that abrasion of the bearing and increase of the
friction force are effectively prevented.