Cylindrical roller and raceway are line touched bearing. Its load capacity is big, mainly bear radial load.
The friction between ring wall and rolling is small, so it is suitable for high-speed rotation . According to whether the ferrule has edge or not , bearing can be divided into single row bearing- NU, NJ, NUP, N, NF and duplex bearing- NNU, NN.
The bearing has structure that inner and outer ring can be separated.
The cylindrical roller bearing ,whose inner or outer ring has no edge, the inner and outer ring can axially move relatively, so it can be used as a self adjustable bearing.
The cylindrical roller bearing ,whose inner or outer ring has a double edge on one side ,the other side of the ferrule has a single edge, can stand axial load in one direction to some degree. Generally they use stamping steel cage, or copper alloy machined cage. But a part use cage formed by amilan .
Such kind of cylindrical roller is widely used in auto industry, engineering machinery, machine tool industry and so on.