This cylindrical roller bearing carries a single row of rollers guided by a solid brass cage (M1), with two ribs on the outer ring and a smooth inner ring, making it a non-locating bearing that allows axial displacement between shaft and housing within the bearing itself. Bore diameter is 25.0 mm, outside diameter 52.0 mm, width 15.0 mm, and net mass 0.15 kg. The E design provides an increased roller complement for higher load carrying capacity within the same envelope dimensions. Limiting speed is rated at 25500 1/min, with a reference speed of 11600 1/min. Radial internal clearance is CN (Group N), the standard clearance range, and running accuracy is held to P6 tolerance class for tighter rotational precision. Since the inner ring has no ribs, the bearing accommodates axial shaft movement while still transmitting radial loads, making it suitable for locations where the shaft needs to float axially relative to the housing. The brass cage supports stable roller guidance at the stated speed values, and the open design requires separate sealing and lubrication provision at the installation stage.