A yoke type track roller, needle roller bearing NATR20-PP-A is built as a single row needle roller and cage assembly with a particularly thick-walled outer ring and an inner ring. Bore diameter is 20.0 mm, outside diameter 47.0 mm, net mass 250.0 g. Axial guidance of the outer ring is achieved through plastic axial plain washers combined with contact washers rather than a shoulder on the outer ring itself. Sealing is of the PP type, with three-stage protection provided by a plastic axial plain washer fitted on each side of the bearing. This arrangement keeps contaminants out of the raceway while the thick-walled outer ring gives a solid rolling surface for direct contact loading, and the washer-based axial guidance removes the need for external side flanges to locate the outer ring.