The INA-FAG B7011-C-T-P4S-DTL is a high-precision angular contact ball bearing designed for demanding spindle applications. This single-row bearing features a 55 mm bore diameter, 90 mm outer diameter, and 18 mm width. It is equipped with ceramic balls (suffix T) for enhanced performance, higher speed capabilities, and reduced friction. The 'C' indicates a contact angle of 15 degrees, and 'P4S' denotes a high-precision tolerance class. The 'DTL' configuration signifies a set of two bearings arranged in a tandem and light preload configuration, optimized for rigidity and accuracy in machine tool spindles.