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Ball roller
These self-retaining track rollers have single or double row units and exceptionally thick-walled outer rings. Axial forces in both directions can be supported by these bearings, as well as high radial forces. A crowned or cylindrical external surface is applied to the bearing outer rings of the track rollers. In instances where there is a misalignment in relation to the raceway, designs with a crowned outside surface are used. Edge stresses must be avoided in these cases. Designed by Schaeffler, the track rollers are supplied with an inner ring, a stud and with a plastic tire on the outer ring.