The INA-FAG B71930-E-T-P4S-UL is a high-precision angular contact ball bearing, specifically designed for demanding applications such as machine tool spindles. This genuine FAG bearing features a 30 mm bore diameter, 47 mm outer diameter, and 9 mm width. It is characterized by its P4S precision class, indicating extremely tight tolerances and high running accuracy. The 'E' design signifies an optimized internal geometry, while 'T' denotes a textile laminated phenolic resin cage, outer ring guided, suitable for high speeds. The 'UL' suffix indicates a universal design for paired mounting with a light preload, ensuring optimal performance in duplex arrangements. This bearing is engineered for high speed, high rigidity, and low friction, making it ideal for precision machinery.