The FAG B7209-E-T-P4S-DBL is a high-precision angular contact ball bearing designed for spindle applications. It features a 45 mm bore diameter, 85 mm outer diameter, and a width of 32 mm. This bearing is manufactured with P4S tolerance class, indicating very high precision suitable for demanding machinery. The 'E' denotes optimized internal design, 'T' refers to a textile laminate cage, and 'DBL' signifies a paired arrangement with two bearings in a back-to-back configuration with light preload. This configuration provides high rigidity and accuracy for machine tool spindles and other precision rotating equipment.