This spindle bearing is a single-row angular contact type with a contact angle of 15°, designed for precision arrangement in pairs or sets. Bore diameter is 100.0 mm, outside diameter 140.0 mm, width 20.0 mm, and net mass 0.851 kg. The cage is made of material designated T, and the bearing carries non-contact lip seals on both sides, marking 2RSD. Limiting speed is rated at 20000 1/min. The restricted tolerances and adjusted design of the HSS71920-C-T-P4S-UL make it suitable for mounting in matched pairs or sets where precise axial and radial guidance under high rotational speed is required. The non-contact lip seals on both sides protect the bearing interior while keeping friction low, supporting operation at the stated limiting speed. The 15° contact angle allows the bearing to carry combined radial and axial loads within a spindle arrangement, and the P4S accuracy class supports applications where running accuracy and repeatable positioning are needed.