The FAG B7009-E-2RSD-T-P4S-UM is a high-precision single row angular contact ball bearing designed for demanding applications, particularly in machine tool spindles. This genuine FAG bearing features an optimized internal design (E), two contact seals (2RSD) for protection against contaminants, and a textile laminate cage (T). It belongs to the P4S precision class, indicating very high running accuracy. The 'UM' designation signifies universal matching, allowing for arbitrary arrangement of single bearings or sets of bearings for light preload. Key dimensions include a bore diameter of 45 mm, an outer diameter of 68 mm, and a width of 12 mm. This bearing is engineered for high speeds and high rigidity.