This single row angular contact ball bearing carries a 40° contact angle design typical of the B series, transmitting combined radial and axial loads in one direction per bearing. Bore diameter is 80.0 mm, outside diameter 140.0 mm, width 26.0 mm, with a net mass of 1.42 kg. The X-life designation indicates optimized internal geometry and rolling elements for extended service life within the same envelope dimensions. Limiting speed is rated at 6400 1/min, reference speed at 4950 1/min. The cage is a solid plastic TVP type, riding on the rolling elements, which allows smooth operation at the stated speed values and reduces friction compared to metal cage designs. As a single row angular contact bearing, it should be paired with a second bearing in back-to-back or face-to-face arrangement when axial loads act in both directions, or used alone where load direction is constant. Lubrication and mounting must maintain the correct axial preload to preserve the rated contact angle and running accuracy.