The FAG B7210-E-T-P4S-DBL is a genuine FAG high-precision angular contact ball bearing set, specifically designed for machine tool spindles and other applications requiring high rotational accuracy and rigidity. This matched pair of bearings features a 50 mm bore, 90 mm outer diameter, and a combined width of 40 mm. It is configured in a back-to-back (DB) arrangement with light (L) preload, ensuring optimal stiffness and performance. The 'E' design signifies optimized internal geometry, while the 'T' indicates a textile laminated phenolic resin cage, suitable for high-speed operation. The P4S precision class ensures extremely tight tolerances and superior running accuracy.