The HFH B7011-C-T-P4S-UL is a genuine high-precision single row angular contact ball bearing, specifically designed for demanding high-speed applications such as machine tool spindles. Featuring a 55 mm inner diameter, 90 mm outer diameter, and 18 mm width, this bearing is constructed with a 15° contact angle and a phenolic resin cage (T) for superior performance and reduced friction at high RPMs. Its P4S precision class ensures exceptional accuracy and rigidity, while the UL designation indicates universal matching for light preload, allowing for flexible paired mounting configurations.