The FAG B71909-E-T-P4S-DFL is a high-precision angular contact ball bearing, part of a matched duplex set configured Face-to-Face (DF) with a light (L) preload, ensuring optimal performance in machine tool spindles. It features a 45 mm bore, 68 mm outer diameter, and a width of 12 mm. The 'E' designation indicates an optimized internal design, and 'T' signifies a textile laminate cage. With a 25° contact angle and P4S super precision tolerance class, this bearing delivers exceptional rotational accuracy and high-speed capability, designed for applications requiring extreme rigidity and precision.