This spindle bearing carries a 15° contact angle and is designed for precise axial-radial load handling in a single-row angular contact configuration. Bore diameter is 40.0 mm, outside diameter 80.0 mm, width 18.0 mm, with a net mass of 0.36 kg. The bearing uses a T-type cage and is supplied without sealing, matched for adjusted mounting in pairs or sets with restricted tolerances (P4S). The restricted tolerance class and matched-set design allow this bearing to maintain accurate running precision under preload, making it suitable for arrangements requiring tight axial positioning and minimal radial play. As it is supplied without sealing, external protection and lubrication must be provided by the housing design; the T cage supports stable rolling element guidance at the elevated speeds typical of this bearing series.