This needle roller bearing carries radial loads within a compact cross-section, featuring a single row of needle rollers, a solid inner ring and an outer ring with two ribs that axially locate the roller and cage assembly. Bore diameter is 30.0 mm, outside diameter 52.0 mm, width 22.0 mm, and net mass is 189.0 g. The bearing runs with a standard cage and reaches a limiting speed of 11700 1/min, with a reference speed of 6400 1/min. The two-rib outer ring allows the bearing to be mounted directly without a separate housing shoulder on one side, while the solid inner ring provides a defined seat on the shaft and simplifies fitting. With no seals fitted, lubrication must be supplied externally as grease or oil and the surrounding housing must be sealed by the design of the assembly. The standard cage guides the needle rollers evenly around the raceway, supporting stable operation up to the stated speed limits.