Full complement of cylindrical rollers arranged in a single row gives this bearing a high radial load carrying capacity within a compact cross-section of 180.0 mm bore, 250.0 mm outside diameter and 42.0 mm width. The outer ring carries 1 rib while the inner ring carries 2 ribs, forming a semi-locating bearing configuration (design B) that allows limited axial displacement in one direction while providing guidance in the other. Mass is 5.998 kg. Limiting speed is 1720.0 1/min, reference speed 1150.0 1/min. The full complement roller set increases the number of rolling elements in contact, raising radial stiffness and load capacity compared to a caged design, at the cost of a lower permissible speed. Radial internal clearance C3 (Group 3) compensates for interference fits and thermal expansion during operation, keeping the bearing free of preload under load and temperature variation. The semi-locating design allows the bearing to accommodate axial shaft displacement on the non-ribbed side while still providing axial guidance through the ribbed side, making it suitable for shaft arrangements requiring one fixed and one floating support point.