he cylindrical roller is in contact with the measuring line of the raceway and has a large capacity to bear radial loads, which is suitable for bearing heavy loads and impact loads, and is also suitable for high-speed rotation. Type N and NU are axially movable and can adapt to changes in the relative position of the shaft and housing caused by thermal expansion or installation errors, and are most suitable for use as free-end bearings. NJ type and NF type can withstand a certain degree of one-way axial load NH type and NUP type can withstand a certain degree of two-way axial load. The inner ring or outer ring can be separated for easy assembly and disassembly.