This angular contact ball bearing carries axial loads from both directions through a double-row, back-to-back arrangement, with mounting achieved via screw fixing on the bore. The bore diameter is 12.0 mm, outside diameter 55.0 mm, and width 25.0 mm, giving a compact axial design with a net mass of 0.358 kg. Sealing is provided on both sides (2RS), protecting the internal raceways and ball set from contamination. The double-direction axial arrangement allows this bearing to absorb axial forces acting in either direction along the shaft, while the screw mounting design simplifies installation and preload setting without requiring a separate housing shoulder on one side. The integrated 2RS seals retain lubricant within the bearing and keep out dust and debris, supporting maintenance-free operation once installed. Its axial contact geometry makes it suited for applications requiring precise axial positioning and rigidity under combined bidirectional thrust loading.