This cylindrical roller bearing carries the outer ring with two ribs and the inner ring with one rib, configured as a single row semi-locating bearing of type NJ. Bore diameter is 45.0 mm, outside diameter 100.0 mm, width 25.0 mm, and net mass 0.885 kg. The E design provides an optimized internal geometry for increased load carrying capacity, and the bearing runs with a polyamide TVP2 cage. Limiting speed is rated at 8500.0 1/min, with a reference speed of 6400.0 1/min. The rib arrangement allows axial displacement of the shaft in one direction while the free ring face permits movement of the non-locating side, which is useful where shaft expansion or misalignment must be accommodated without inducing axial preload. Radial internal clearance falls in the CN (Group N) range, suitable for standard fit and operating temperature conditions. The bearing is supplied without integrated sealing, so lubricant supply and contamination protection must be provided externally, and grease or oil lubrication should be selected according to the actual speed and load requirements of the application.