NSK cylindrical roller bearings are divided into single row bearings such as Nu, NJ, NUP, N, NF and double row bearings of NNU and NN according to whether the ferrule has a flange. The bearing is a separable structure with inner ring and outer ring. Cylindrical roller bearings with no flange on the inner ring or outer ring can be used as free end bearings because their inner ring and outer ring can move relatively axially. Cylindrical roller bearings with double flanges on one side of the inner ring and outer ring and a single flange on the other side can withstand a certain degree of axial load in one direction. Generally, steel plate stamping cages or copper alloy turning cages are used. However, some of them use polyamide shaped cages.

Scope of application

Large and medium-sized motors, locomotives and rolling stock, machine tool spindles, internal combustion engines, generators, gas turbines, reduction boxes, rolling mills, vibrating screens, lifting and transportation machinery, etc