Angular contact ball bearing designed for high-precision spindle applications, with a 15° contact angle and restricted tolerances allowing precise axial and radial positioning under combined loads. Bore diameter is 110.0 mm, outside diameter 150.0 mm, width 20.0 mm, and net mass 0.85 kg. The bearing is fitted with a T cage and supplied without sealing, and belongs to the B719..-C series, adjusted for use in pairs or sets. The P4S accuracy class and C-series design suit this spindle bearing for arrangements requiring tight running accuracy and controlled preload, typical of paired or set mounting configurations. As the bearing has no integrated sealing, external sealing or grease/oil lubrication management must be provided by the housing design. The T cage supports stable ball guidance at the speeds and tolerances associated with restricted-tolerance spindle bearing sets.