This spindle bearing is a single-row angular contact ball bearing with a contact angle of 15°, designed for adjusted mounting in pairs or sets. Bore diameter is 12.0 mm, outside diameter 28.0 mm, width 8.0 mm, and net mass 0.02 kg. The bearing uses a T cage and runs without sealing, built to restricted tolerances under symbol B7001-C-T-P4S-UL. The 15° contact angle combined with restricted tolerances and P4S accuracy class makes this bearing suitable for arrangements requiring precise axial and radial guidance at controlled preload. Since it is supplied for pairing or set configuration, mounting must maintain the matched orientation to preserve the intended contact geometry. The absence of integrated sealing means external protection and lubrication management must be provided by the housing design, consistent with the demands of high-precision spindle applications.