This spindle bearing carries a 60.0 mm bore, 95.0 mm outside diameter and 18.0 mm width, with a net mass of 390 g. The design uses a contact angle of 17° and ceramic balls, combined with a T cage, giving the high-speed spindle bearing HCM7012-C-T-P4S-UL-XL a restricted tolerance grade suited to precise, adjusted mounting in pairs or sets. Designation C indicates the 17° contact angle version, while P4S denotes the tightened tolerance class applied to this bearing. The bearing is supplied without sealing, so lubrication and contamination protection must be provided externally by the housing arrangement. Its restricted tolerances and paired/set matching allow precise axial and radial location when mounted back-to-back or face-to-face, and the ceramic balls reduce rolling mass, supporting operation with lower friction and heat generation at the contact angle of 17°. The T cage contributes to stable ball guidance under these running conditions.