The FAG B71904-C-T-P4S-DBL is a high-precision angular contact ball bearing designed for demanding machine tool spindle applications. This genuine FAG bearing features a 20 mm bore diameter, a 37 mm outer diameter, and a 9 mm width. It is manufactured to P4S precision class, ensuring exceptional running accuracy and stiffness. The 'C' designation indicates a 15° contact angle, optimized for high speed and axial load capacity. The 'T' signifies a phenolic resin cage, suitable for high-speed operation. The 'DBL' configuration indicates a double-row arrangement with a light preload, providing enhanced rigidity and load distribution for superior performance in critical machinery.