Carries combined radial and axial loads at a 25° contact angle, with geometry set for precise axial positioning under preload. Bore diameter is 17.0 mm, outside diameter 30.0 mm, width 7.0 mm, and net mass 0.02 kg. The bearing uses a T cage and has no seals, requiring external contamination protection at the mounting stage. Supplied to restricted (narrowed) tolerances and matched for universal arrangement, this spindle bearing is intended for mounting in pairs or sets in a back-to-back, face-to-face, or tandem configuration, with the P4S accuracy class supporting high running accuracy and stable preload. The open design allows oil or grease lubrication to be selected according to the operating speed and thermal conditions of the assembly, while individual axial adjustment is not required since the sets are matched at the factory.