This needle roller bearing guides along a track using a particularly thick-walled outer ring, combined with a needle roller and cage assembly and an inner ring. Bore diameter is 25.0 mm, outside diameter 52.0 mm, and net mass is 181.35 g. The outer ring has no axial guidance, and the design is open. The inner ring, outer ring, and needle roller and cage assembly can be mounted separately. Without sealing, the bearing requires external protection from contaminants and relies on separate lubrication arrangements at the mounting location. The separate-mounting design of the components allows flexibility in assembly sequence, while the thick-walled outer ring provides the load-carrying surface needed for track roller applications where the outer ring runs directly against a mating surface.