This spindle bearing carries a 25° contact angle and a bore of 50.0 mm, outside diameter of 72.0 mm, and width of 12.0 mm, with a net mass of 0.146 kg. It is fitted with a T-type cage and 2RSD lip seals on both sides, running non-contact, and is manufactured to restricted (P4S) tolerances for precise, adjusted mounting in pairs or sets. The limiting speed reaches 36000 1/min. The restricted tolerance class and matched-set design allow this bearing to be paired or stacked for controlled preload and accurate axial and radial guidance under high-speed rotation. The non-contact lip seals on both sides keep out contamination while minimizing friction and heat generation, supporting stable operation at the rated limiting speed. The 25° contact angle provides combined load capacity suited to spindle arrangements requiring high stiffness and precise running accuracy.