This track roller carries a single row self-retaining ball bearing assembly with a particularly thick-walled outer ring, ball and cage assembly, and a solid short roller stud with a threaded hole. Outside diameter is 52.0 mm, width 30.7 mm, net mass 0.17 kg. Axial guidance of the outer ring is provided directly by the balls, without an eccentric collar. Sealing designation DRS combines a lip seal on the stud side for axial sealing action with a sealing shield and cover on the end face, giving protection on both sides without a relubrication facility. A mounting slot on the face side serves as a mounting aid, simplifying alignment of the stud during installation. The design suits applications where a compact, self-contained roller with fixed outer ring guidance is required.