A single-row cylindrical roller bearing carrying two ribs on the outer ring and a smooth inner ring, which makes it a non-locating bearing free to accommodate axial displacement of the shaft within the housing. Bore diameter is 30.0 mm, outside diameter 90.0 mm, width 23.0 mm, and net mass 0.851 kg. The bearing runs with a limiting speed of 15500.0 1/min and a reference speed of 8100.0 1/min, with a machined M1 cage and radial internal clearance C3 (Group 3). The non-locating design allows the inner and outer rings to shift axially relative to each other, letting the bearing act as a free bearing on a shaft that is fixed elsewhere, without transmitting axial load. The C3 internal clearance compensates for thermal expansion during operation, while the M1 cage supports stable roller guidance at the given speed range. Running accuracy is held to P6, suiting applications where positioning precision of the shaft matters.