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The rolling body is a cylindrical roller rolling bearing. Cylindrical roller and raceway for the line of contact bearing. Large load capacity, mainly bear radial load. Ring wall and rolling friction small, suitable for high-speed rotation. According to the ferrule has without ribs, can be divided into NU, NJ, NUP, N, NF, rolling bearing, and NNU, NN double row bearing. The bearing inner ring, outer ring can be separated structure. The inner ring or outer ring without rib of cylindrical roller bearing, the inner ring and the outer ring can axially move relatively, so it can be used as a free end bearing. In the inner and outer rings of a side of a double flange, the other side of the ferrule has a single rib of cylindrical roller bearings, can withstand a certain degree of one direction axial load. General stamping steel cage, or copper alloy machined cage. But there are also a part of the polyamide forming the holder
