The Nachi 6309-2NSE C3 is a premium double-sealed deep groove ball bearing designed for demanding electrical and mechanical applications, featuring a 45 mm inner diameter, 100 mm outer diameter, and 25 mm width for robust performance in compact spaces. This bearing offers a dynamic load rating of 53,000 N and a static load rating of 32,000 N, with a maximum speed of 4,800 rpm (grease) or 8,200 rpm (oil), ensuring reliable operation under high radial and axial loads. Its double Buna-N rubber seals provide superior protection against contamination and grease leakage, while the C3 internal clearance accommodates thermal expansion, making it ideal for electric motors, automotive alternators, and industrial machinery. The stamped steel cage enhances durability, and the bearing’s precision construction delivers smooth, quiet, and maintenance-free operation, even in harsh environments. Please note, the second URL references incorrect dimensions (50x90x20 mm), but the correct 6309-2NSE specification is 45x100x25 mm.