The INA-FAG B7011-C-T-P4S-DBL is a super-precision angular contact ball bearing set, specifically designed for machine tool spindles and other high-speed, high-accuracy applications. This matched pair features a back-to-back (DBL) arrangement with light preload, ensuring optimal rigidity and performance. It has a 15° contact angle (C), a bore diameter of 55 mm, an outer diameter of 90 mm, and a total width of 36 mm for the set. The P4S precision class signifies extremely tight tolerances and superior running accuracy, while the T-type cage is made from textile laminate (phenolic resin) for high-speed capability.