This cylindrical roller bearing carries a full complement of rollers arranged in two rows, with a bore diameter of 55.0 mm, outside diameter of 90.0 mm, and width of 26.0 mm. The outer ring has 1 rib and the inner ring has 3 ribs, forming a semi-locating bearing configuration, design A. Net mass is 0.621 kg, with a limiting speed of 5200.0 1/min and a reference speed of 3100.0 1/min. The full complement roller set increases the number of rolling elements in contact, raising radial load capacity within the given dimensional envelope. Radial internal clearance is CN (Group N), suited for standard mounting conditions without additional preload requirements. The semi-locating design accommodates axial displacement in one direction while providing radial guidance, and the rib arrangement on both rings supports roller alignment under load.