Precision angular contact spindle bearing designed for high-speed applications requiring exact axial and radial positioning under a 15° contact angle. Bore diameter is 75.0 mm, outside diameter 115.0 mm, width 20.0 mm, with a net mass of 0.62 kg. The bearing uses a T cage and is supplied without sealing, matched and adjusted for use in pairs or sets under restricted tolerances (P4S). The restricted tolerance class and matched-pair design allow precise control of internal clearance when mounted in sets, supporting stable running accuracy at high rotational speeds. As the bearing is unsealed, external sealing and lubrication management must be provided by the surrounding housing arrangement, and grease or oil lubrication should be selected according to the specific spindle assembly requirements.