The FAG B7211CTP4SDFL is a high-performance super precision angular contact ball bearing designed for demanding machine tool spindle applications. This genuine FAG bearing features a 55 mm bore, 100 mm outer diameter, and 21 mm width. It incorporates a 15° contact angle (C) for high speed and axial rigidity, a phenolic resin cage (T) for reduced friction and high-speed capability, and a P4S precision class for exceptional running accuracy. The DFL designation indicates a duplex arrangement, face-to-face configuration with light preload, ensuring optimal stiffness and precision for critical industrial machinery.