This deep groove ball bearing carries radial and axial loads in a single row, sealed on both sides to keep the raceway protected from contamination. Bore diameter is 40.0 mm, outside diameter 68.0 mm, width 21.0 mm, and net mass is 0.263 kg. The cage is a steel sheet metal design (JN), radial internal clearance falls in group CN, and the limiting speed reaches 5400 1/min. The integrated seals mean the bearing runs with grease lubrication sealed in from the factory, so no external lubrication line is required and maintenance intervals are reduced. Standard CN clearance suits typical shaft and housing fits without added preload, making this 63008-2RSR a direct fit for existing 63008-2RS1 (SKF), 63008DDU (NSK), or 63008LLU (NTN) positions where the same bore, outside diameter, and width apply.