The FAG B71911-E-T-P4S-DTL is a high-performance super precision angular contact ball bearing set, specifically designed for machine tool spindles and other high-speed, high-precision applications. This genuine FAG bearing features a 55 mm bore, 80 mm outer diameter, and a combined width of 26 mm for the duplex tandem arrangement. It has a 25° contact angle (E suffix), a phenolic resin cage (T suffix) for high-speed capability, and is manufactured to P4S super precision class standards. The DTL suffix indicates a duplex tandem arrangement with light preload, ensuring optimal rigidity and accuracy for demanding operational environments.