The FAG B71917-E-T-P4S-DUL is a high-precision angular contact ball bearing, specifically designed for demanding applications in machine tool spindles. This genuine FAG bearing features an 85 mm inner diameter, 120 mm outer diameter, and 18 mm width. It is characterized by its P4S precision class, ensuring high running accuracy and rigidity. The 'E' suffix indicates an optimized internal design for increased load carrying capacity, 'T' denotes a cage made of textile laminate (phenolic resin), and 'DUL' signifies a universal design for paired mounting in a duplex arrangement (O or X configuration) with a light preload. This bearing is suitable for high-speed operations and provides excellent performance in precision machinery.