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Track rollers are self-retaining, single- or double-row assemblies with particularly thick-walled outer rings. These bearings accommodate not only high radial loads but also axial loads in both directions. The outer ring’s running surface is either crowned or cylindrical. Versions with a crowned running surface are used when misalignment relative to the raceway occurs and edge stresses must be avoided. Track rollers are available with inner ring, with journal, and with a plastic coating on the outer ring.

Track rollers feature outer rings with crowned or cylindrical running surfaces, inner rings, and ball cages with plastic cages. Their construction is similar to that of deep groove or angular contact ball bearings and they are mounted on shafts.