This cylindrical roller bearing carries radial load on a single row of rollers guided by a machined cage (M1), with two ribs on the outer ring and one rib on the inner ring, giving it a semi-locating function that allows axial displacement in one direction while the free direction permits shaft expansion. Bore is 50.0 mm, outside diameter 110.0 mm, width 27.0 mm, net mass 1.447 kg. Limiting speed is rated at 11600 1/min, reference speed at 6000 1/min. The E design indicates a reinforced internal geometry for increased load capacity. Radial internal clearance C3 provides extra clearance to compensate for thermal expansion and interference fit during operation. The semi-locating configuration suits mounting positions where one bearing must fix the shaft axially while allowing free axial movement at the opposite support, reducing the risk of axial preload. The machined M1 cage supports stable roller guidance at the stated speed ratings, and the single-row cylindrical design permits easy axial separation of inner and outer rings during mounting and dismounting.