Inner ring single blocking edge non-contact NU type cylindrical roller bearing

The invention provides an inner ring single blocking edge non-contact NU type cylindrical roller bearing which comprises a bearing outer ring, a bearing inner ring and cylindrical rollers, wherein blocking edges are arranged on two sides of the bearing outer ring; the distance between the blocking edges on the two sides is matched with the length of the cylindrical rollers. The inner ring single rib non-contact NU type cylindrical roller bearing is characterized in that a single-side rib is arranged on one side of the bearing inner ring, a clearance is reserved between the single-side rib of the bearing inner ring and the cylindrical rollers and is greater than the axial movement value of a shaft, a constant clearance is kept between the cylindrical rollers and the single-side rib of the bearing inner ring so that the cylindrical rollers and the single-side rib stay in a non-contact working state. The external diameter of the single-side rib of the bearing inner ring is greater than the diameter of a shaft sh