The HFH HSS7009CTP4SUL is a high-precision angular contact ball bearing designed for demanding high-speed applications, particularly in machine tool spindles. It features a 45mm bore, 68mm outer diameter, and 12mm width. The 'CT' designation indicates a 15-degree contact angle, while 'P4SUL' signifies P4 (ABEC 7) precision class, a universal matching capability for single bearings, and a light preload. This bearing is engineered to provide high rigidity, excellent rotational accuracy, and reliable performance in critical machinery.