This cylindrical roller bearing carries an inner ring together with a full complement double-row roller set and a particularly thick-walled outer ring, which is guided axially by the rolling elements themselves. Bore diameter is 30.0 mm, outside diameter 72.0 mm, and net mass 0.71 kg. Labyrinth seals are fitted on both sides, designated 2LB. The thick-walled outer ring gives the design high radial rigidity and allows it to run directly as a track roller under load without a separate housing. Axial guidance through the rolling elements keeps the outer ring positioned without additional fixing components, while the full complement roller set increases the load-carrying cross-section compared with a caged arrangement. The double-sided labyrinth sealing restricts ingress of contaminants and supports grease retention within the bearing, which is relevant for maintaining consistent running behaviour over extended service intervals.