This angular contact ball bearing guides a yoke type track roller by taking up axial loads through the ball complement, which provides direct axial guidance of the outer ring. The design is double row and self-retaining, with a particularly thick-walled outer ring, an inner ring with a 25.0 mm bore, an outside diameter of 72.0 mm, a height of 25.4 mm and a net mass of 0.5 kg. The cage, coded TVH, is made from glass fibre reinforced polyamide, and the bearing is built in X-life design. Sealing is provided on both sides by lip seals with optimised geometry (2HRS), reducing friction while retaining grease inside the bearing and keeping contamination out. The thick-walled outer ring allows direct rolling contact against a track, so the bearing can be mounted without a separate outer race component. A lubrication hole in the inner ring is available on request for relubrication during service.