The FAG B71905-E-T-P4S-DFL is a high-precision angular contact ball bearing designed for demanding machine tool spindle applications. This bearing features a 25 mm bore diameter, a 47 mm outer diameter, and a 24 mm width. It is part of the 719 series, known for its high speed capabilities and rigidity. The 'E' suffix indicates an optimized internal design, 'T' denotes a cage made of textile laminate (phenolic resin), 'P4S' signifies a super precision class (P4 tolerance with enhanced running accuracy), and 'DFL' indicates a double-row arrangement for tandem mounting with a light preload. This configuration is suitable for applications requiring high rotational accuracy and stiffness.