This spindle bearing is a single-row angular contact type with a 15° contact angle, bore diameter 90.0 mm, outside diameter 125.0 mm, and width 18.0 mm. The design uses a T cage and 2RSD non-contact lip seals on both sides, with a net mass of 0.589 kg and a limiting speed of 22000 1/min. The C designation indicates a modified internal geometry suited for adjusted mounting in pairs or sets, matched under restricted (P4S) tolerances for precise axial and radial positioning. The angular contact design and matched-pair capability allow the bearing to carry combined loads while maintaining accurate shaft guidance under high speed rotation. The P4S tolerance class ensures tight dimensional control needed for stable operation at the stated limiting speed. The 2RSD lip seals on both sides prevent contamination ingress without contact drag, supporting long-term grease retention. The UL suffix denotes a defined grease fill condition suitable for high speed spindle applications requiring low friction and minimal heat generation.