This track roller carries radial loads via a single row of balls running against a particularly thick-walled outer ring, with a ball and cage assembly and an inner ring completing the unit. Bore diameter is 15.0 mm, outside diameter 40.0 mm, height 11.0 mm, and net mass is 0.07 kg. Axial guidance of the outer ring is provided directly by the balls, and lip seals are fitted on both sides (2RSR), giving sealing action in both the axial and radial direction. The thick-walled outer ring lets the roller run directly against a track or cam surface without an additional bearing housing, while the ball-guided axial location keeps the outer ring positioned under combined radial and axial contact. The two-sided lip seal (2RSR) protects the ball and cage assembly from contamination and retains the internal lubricant, making the unit suited to applications where the outer ring surface itself acts as the rolling contact element.