The cylindrical roller is in line contact with the raceway and has a large radial load capacity. Suitable for both heavy loads and shock loads, as well as high-speed rotation. Cylindrical roller bearing raceways and rolling elements are geometric. After the improved design, it has higher bearing capacity. The new structural design of the rib and the roller end face not only improves the axial bearing capacity of the bearing, but also improves the lubrication conditions of the contact area between the roller end face and the rib. performance of bearings.