The INA-FAG B7011-C-T-P4S-UM is a high-precision angular contact ball bearing designed for demanding spindle applications in machine tools. This FAG bearing features a 55 mm bore diameter, 90 mm outer diameter, and 18 mm width. It has a 15-degree contact angle (C) and P4S tolerance class, ensuring exceptional running accuracy and rigidity. The 'T' indicates a solid window cage made of textile laminate, and 'UM' signifies universal matching for sets of two or more bearings, allowing for various preloads and arrangements. This bearing is engineered for high speeds and precision, crucial for modern machine tool performance.