This is a single row angular contact ball bearing with a 50.0 mm bore, 90.0 mm outside diameter and 20.0 mm width, weighing 0.455 kg. It belongs to the X-life design series, providing optimized internal geometry within standard boundary dimensions. The bearing uses a TVP cage made of plastic. Limiting speed is rated at 10300 1/min, with a reference speed of 7600 1/min. The single row angular contact design allows the bearing to carry combined radial and axial loads acting in one direction, making it suitable for arrangements where axial positioning is required on one side of the bearing. The plastic TVP cage reduces friction and mass compared to metal cages, supporting the stated speed ratings. As with angular contact ball bearings, this type is typically mounted in pairs or sets to accommodate axial loads from both directions or to increase rigidity of the bearing arrangement.