Takes radial load through a single row of rollers and, as a non‑locating cylindrical roller bearing of type NU, lets the shaft move axially against the housing: the outer ring has two ribs, the inner ring is smooth. Bore 280 mm, outside diameter 420 mm, width 65 mm, mass 31.2 kg. Radial internal clearance CN (Group N), machined cage M1A, standard design, reference speed 1550 rpm, limiting speed 2550 rpm. The smooth inner ring is separable, so both rings can be fitted separately, each with its own interference fit, and thermal shaft growth is absorbed inside the bearing instead of loading the seat. Running accuracy to P6 is tighter than the normal class, which suits seats machined to matching tolerances. Dimensional and design equivalents: SKF NU1056MA, STEYR NU1056MA, TIMKEN NU1056MA.