The cylindrical roller is in line contact with the raceway, and the radial load capacity is large. It is not only suitable for bearing heavy load and impact load, but also suitable for high-speed rotation. CRB raceways and rolling element geometric shapes have been improved and designed to have higher load-bearing capacity. The new structural design of ribs and roller end faces not only improves the axial load-bearing capacity of the bearing, but also improves the roller end faces. The lubrication condition of the contact area with the rib improves the performance of the bearing. This type of bearing is mainly used in medium and large motors, generators, internal combustion engines, gas turbines, machine tool spindles, reduction gears, loading and unloading handling machinery, and various industrial machinery.