Precision angular contact spindle bearing designed for high-speed rotation with a contact angle of 15°, bore diameter 85.0 mm, outside diameter 150.0 mm, width 28.0 mm, net mass 1.782 kg. The C design provides a defined internal geometry suited for paired or set arrangements, with cage type T and restricted tolerances (P4S) ensuring consistent running accuracy across matched sets. This spindle bearing is supplied without sealing, so lubrication and contamination protection must be provided externally by the housing design. Being adjusted and produced to restricted tolerances, it is intended for mounting in pairs or sets where preload and axial stiffness are set during assembly rather than by the bearing alone. The 15° contact angle gives a balance between axial and radial load transmission, while the T cage supports stable guidance of the rolling elements at elevated speeds.