The SKF 211NR is a genuine single row deep groove ball bearing, featuring a 55 mm bore diameter, 100 mm outer diameter, and 21 mm width. The 'NR' suffix indicates that the bearing is equipped with a snap ring groove and a snap ring, which aids in axial location within a housing. This versatile bearing is engineered to accommodate both radial and axial loads in both directions, making it suitable for a wide range of industrial and agricultural machinery applications requiring reliable performance and high-speed capabilities.