This spindle bearing carries a 50.0 mm bore, 72.0 mm outside diameter and 12.0 mm width, with a mass of 0.127 kg. It is built with a 15° contact angle and a T-type cage, matched to restricted tolerances (P4S) for precision rotation, and features the C design with reduced internal geometry variation. The bearing is supplied without sealing and is intended for use in adjusted pairs or sets, as denoted by the UL suffix. Given its 15° contact angle and P4S tolerance class, this bearing is suited for applications requiring high rotational accuracy and stiffness under combined axial and radial loads. The absence of sealing means external lubrication and contamination control must be arranged separately, while the paired/set mounting (UL) allows preload to be set according to the required stiffness and speed characteristics of the shaft assembly.