This is a double row angular contact ball bearing designed as a yoke type track roller, with a particularly thick-walled outer ring providing axial guidance through the ball complement itself. The bore diameter is 6.0 mm, outside diameter 19.0 mm, height 9.0 mm, and net mass 12.79 g. The design consists of a ball and cage assembly combined with an inner ring, and the outer ring is self-retaining. Sealing is provided by lip seals on both sides (2RSR), combining axial and radial sealing action. The self-retaining outer ring and integrated ball guidance make this bearing suitable for direct rolling contact against a track surface without the need for a separate housing. The double-lip sealing arrangement protects the internal ball and cage assembly from contamination while retaining lubricant, allowing continuous rolling operation under the guidance forces transmitted axially through the outer ring. The compact dimensions and low mass suit applications where a small track roller with self-contained axial guidance is required.