The FAG B7028-C-T-P4S-DFL is a high-precision angular contact ball bearing, specifically designed for demanding machine tool spindle applications. This genuine FAG bearing features a 140 mm bore diameter, a 210 mm outer diameter, and a 33 mm width. It is engineered for high speeds, high rigidity, and exceptional running accuracy, crucial for precision machinery. The 'C' indicates a 15° contact angle, 'T' signifies a phenolic resin cage, and 'P4S' denotes a special tolerance class for ultra-precision applications. The 'DFL' configuration indicates a double-row, face-to-face arrangement with light preload, optimized for axial and radial loads in both directions.