This spindle bearing is designed for precision rotation at a 25° contact angle, with a bore diameter of 45.0 mm, outside diameter of 68.0 mm, and width of 12.0 mm. Net mass is 0.14 kg, and the limiting speed reaches 40000.0 1/min. The bearing features a T cage and 2RSD sealing, with lip seals fitted on both sides in a non-contact arrangement. Supplied to restricted tolerances (P4S), this bearing is matched for use in pairs or sets under adjusted configuration, suiting applications where precise axial and radial positioning is required. The non-contact lip seals on both sides limit friction and heat generation while maintaining protection against contamination, supporting stable operation at the specified limiting speed. The T cage contributes to guidance stability at high rotational speeds.