This single-row cylindrical roller bearing, type NU, has a bore of 120.0 mm, outside diameter of 180.0 mm, and width of 28.0 mm, with a net mass of 2.45 kg. The outer ring carries two ribs while the inner ring is smooth (no ribs), making it a non-locating bearing that allows axial displacement between inner and outer ring. It runs with a brass cage (M1), radial internal clearance CN (Group N), and running accuracy to P6. Limiting speed is 7300 rpm, with a reference speed of 3550 rpm. The non-locating design lets this bearing compensate for axial shaft expansion without introducing extra axial load, so it should be paired with a locating bearing on the same shaft line. The smooth inner ring and two-rib outer ring geometry permit the inner ring to slide axially within the outer ring while carrying radial load only. Standard CN clearance and P6 accuracy suit applications requiring reliable running precision at the stated speed range, with the M1 cage supporting stable roller guidance under continuous rotation.