This single-row cylindrical roller bearing carries the bore of 60.0 mm, outside diameter of 130.0 mm and width of 46.0 mm, weighing 3.0 kg. The outer ring has 2 ribs while the inner ring is smooth with no ribs, giving type NU a non-locating design that allows axial displacement of the shaft within the bearing. The cage is executed in M1, and radial internal clearance is CN (Group N). Limiting speed reaches 9600 1/min, with a reference speed of 4250 1/min, and running accuracy is held to P6. The non-locating construction of type NU makes this bearing suited for the free bearing position on a shaft, compensating for thermal expansion without introducing axial load. The smooth inner ring together with the two-rib outer ring lets the rollers move axially relative to the inner ring while remaining radially guided. The M1 cage and CN clearance support operation at the stated limiting and reference speeds, and the P6 accuracy class provides tighter dimensional and running tolerances than standard class for applications requiring more precise shaft guidance.