This single-row cylindrical roller bearing, type NU, has a bore of 40.0 mm, outside diameter of 90.0 mm and width of 23.0 mm, with a net mass of 0.763 kg. The outer ring carries two ribs while the inner ring is smooth (no ribs), which makes the bearing a non-locating type allowing axial displacement between inner and outer ring. It is fitted with an M1 cage and built to design E, with radial internal clearance CN (Group N) and running accuracy according to P6. Limiting speed is 14200 1/min, reference speed 7100 1/min. The non-locating design lets the shaft expand axially without imposing extra load on the bearing, so it can be paired with a locating bearing on the same shaft line. Running accuracy class P6 supports applications requiring tighter rotational precision than standard tolerance, and the CN internal clearance suits normal operating conditions without extra preload. The E design of the roller and raceway geometry increases load carrying capacity within the given dimensional envelope, and the M1 cage guides the rollers at the stated speed ratings.