Cylindrical roller bearings are usually guided by the two ribs of a bearing ring, and the cage, roller and guide ring form an assembly, which is generally a separable bearing. This kind of bearing is more convenient to install and disassemble, especially when the inner and outer rings are required to have an interference fit with the shaft and the housing. This type of bearing is generally only used to bear radial load. Only single row bearings with ribs on the inner and outer rings can bear smaller axial loads or larger intermittent axial loads. Compared with deep groove ball bearings with the same external dimensions, this type of bearing has a larger radial load capacity. From a structural point of view, it is also suitable for high-speed rotation.