Cylindrical roller and groove for line contact bearing load capacity, the main radial load roller rings and raised edge friction small, suitable for high speed rotating rings according to have raised edge, can divide a NU NJ NUP N NF, bearings, and NNU NN, double row bearing the bearing outer ring in is separable structure in the outer circle or no raised edge cylindrical roller bearing, its outer ring and relative to axial movement, so it can be used as a free end bearing outer ring and, one side has a double raised edge, the other side of the rings have raised edge of single cylinder roller bearings, can take a certain degree of a direction axial load generally use stamping steel maintains a, or copper alloy car system maintains a but there are also part of the use of polyamide forming maintains a
