The FAG B71938-C-T-P4S-UM is an ultra-precision angular contact ball spindle bearing from Schaeffler, designed for high-speed and high-accuracy applications. It features a 15° contact angle (C) and a robust textile laminate cage (T) that is outer ring piloted. Its universal design (UM) enables paired mounting with a light preload, ensuring optimal operational characteristics and enhanced rigidity. With an inner diameter of 190 mm, an outer diameter of 260 mm, and a width of 38 mm, this bearing adheres to P4S tolerance class standards, making it ideal for demanding machine tool spindles and other precision machinery.