This cylindrical roller bearing carries a full complement of rollers arranged in two rows, giving high radial load capacity within a compact cross-section. The outer ring has 1 rib and the inner ring has 3 ribs, forming a semi-locating configuration that guides the rollers axially while allowing controlled displacement. Bore diameter is 30.0 mm, outside diameter 55.0 mm, width 19.0 mm, net mass 188.35 g. Limiting speed reaches 9300 1/min, reference speed 5600 1/min, and radial internal clearance is CN (Group N). The semi-locating design suits applications where one bearing position must accommodate shaft thermal expansion while still transmitting radial load. Full complement roller filling increases load-carrying ability compared to caged designs but limits maximum speed, matching the stated speed values. CN clearance provides standard running fit for general mounting conditions, and the design requires suitable lubrication (grease or oil) matched to the reference and limiting speed figures given above.