This angular contact ball bearing guides a track along its outer ring surface, with the outer ring axially located by the balls themselves rather than by shoulders. The double row design uses a particularly thick-walled outer ring together with a ball and cage assembly and an inner ring, giving a bore diameter of 20.0 mm, an outside diameter of 47.0 mm, and a height of 16.0 mm, with a net mass of 0.12 kg. Sealing is provided by lip seals on both sides (2RS), combining axial and radial sealing action to keep contaminants out of the ball path. The self-retaining construction and thick-walled outer ring allow the bearing to run directly on a track surface, transmitting radial load through rolling contact while the balls themselves absorb the axial guidance forces acting on the outer ring.