The 6209K2RSC3 is a robust deep groove ball bearing designed for high-speed rotation and radial and axial loads. It features a 45 mm bore diameter, 85 mm outer diameter, and 19 mm width. The 'RS' designation indicates a single rubber seal on one side, while 'C3' denotes a greater than normal internal clearance, making it suitable for applications with temperature variations or potential misalignment. This bearing is commonly used in agricultural machinery, industrial equipment, and electric motors.