The SKF 6309MAC3 is a genuine SKF single row deep groove ball bearing, designed for high-speed applications and radial loads. It features a 45 mm bore diameter, a 100 mm outer diameter, and a 25 mm width. The 'MA' designation indicates a machined brass cage, offering enhanced durability and performance in demanding conditions, while 'C3' denotes a radial internal clearance greater than normal, suitable for applications involving thermal expansion or misalignment. This robust bearing is a standard component in various industrial and agricultural machinery.