This spindle bearing carries a 25° contact angle and ceramic balls, providing high stiffness and low centrifugal load at elevated speeds. Bore diameter is 50.0 mm, outside diameter 80.0 mm, width 16.0 mm, with a net mass of 0.268 kg. The bearing uses a T-type cage and 2RSD sealing arrangement on both sides, matched to restricted (P4S) tolerances for precise running accuracy. Supplied for adjusted mounting in pairs or sets, this design suits shaft arrangements requiring accurate axial and radial positioning under high rotational speed. The non-contact lip seals limit friction and heat generation while keeping out contamination, supporting stable operation without added drag. Restricted tolerances and the P4S accuracy class allow tight alignment and consistent preload when bearings are combined in sets, making this construction suitable where rotational accuracy and thermal stability are required simultaneously.