This needle roller bearing carries radial load in a compact cross-section, using a full complement of needle rollers guided by a standard cage. Outside diameter is 52.0 mm, net mass 128.11 g, with a limiting speed of 10900 1/min and a reference speed of 6400 1/min. The XL designation indicates the light series design of the NK line. The standard cage keeps the needle rollers evenly spaced and reduces friction compared to a full-complement arrangement, supporting operation up to the stated limiting speed. As a needle roller bearing without an integral inner ring, it requires a hardened and ground shaft surface as the running track, making it suited for applications where radial space is limited but sufficient radial load capacity is still needed. Lubrication and mounting fits should be selected according to the actual operating speed relative to the reference value given above.