Carries radial load on a single row of rollers guided by a machined M1 cage; the outer ring has two ribs and the inner ring is smooth, so the NU design works as a non-locating bearing and allows axial displacement between the rings. Bore 75 mm, outside diameter 190 mm, width 45 mm, mass 7.1 kg. Radial internal clearance is CN (Group N), running accuracy to P6, reference speed 4100 1/min and limiting speed 6700 1/min. The separable inner ring lets each ring be mounted on its seat independently, which suits interference fits on both shaft and housing. Axial location must be provided by a second bearing. Dimensional and design equivalents: KOYO NU415, NSK NU415, NSK NU415W, NTN NU415, SKF NU415, STEYR NU415, ZKL NU415.