NUTR4090-A is a yoke type track roller built as a double row cylindrical roller bearing with a particularly thick-walled outer ring and a full complement cylindrical roller set running on an inner ring. The outer ring is guided axially directly by the rolling elements, without a separate guiding flange. Bore diameter is 40.0 mm, outside diameter 90.0 mm, net mass 1.126 kg. Both sides are fitted with labyrinth seals, sealing designation 2LB. The direct axial guidance by the rolling elements lets the thick-walled outer ring run against a track surface while carrying the full complement roller set, which increases the number of load-bearing elements in contact. The 2LB labyrinth seals on both sides restrict ingress of contaminants without adding contact friction, keeping the running surface protected during continuous rolling contact against the mating track.