This cylindrical roller bearing is a single-row, non-locating design with a machined brass cage (M1) and enhanced internal geometry (E design). The outer ring carries two ribs while the inner ring is smooth (0 ribs), allowing axial displacement between the rings and accommodating shaft expansion without added axial load. Bore diameter is 55.0 mm, outside diameter 120.0 mm, width 29.0 mm, and net mass 1.63 kg. Limiting speed is rated at 10400 1/min, with a reference speed of 5500 1/min. Radial internal clearance corresponds to CN (Group N). The non-locating configuration makes this bearing suitable for the floating position in a bearing arrangement, where axial freedom is required to compensate for thermal expansion or shaft deflection. Running accuracy to P6 supports applications requiring tighter rotational precision than standard tolerance class. The CN clearance and machined M1 cage provide stable roller guidance at the stated speed range, while the smooth inner ring allows easy mounting and dismounting of the outer ring assembly independently from the shaft.