The YAF single row series bearings are manufactured in accordance with AS21438 standard. The bearings are used in track roller applications with each bearing consisting of an inner race, outer race, needle rollers, end washers and thrust seals. Relubrication holes and grooves are provided. For wear and corrosion protection the outer ring surface is hard polished chrome. Other exposed surfaces are cadmium or zinc nickel plated. Inner rings may be black oxide coated. Consult our engineering department for further specific requirements and special designs. Smith Bearing® Airframe Bearing, Yoke Type, Series: YAF, Track Roller Bearing, 1/4 in Bore, 1 Row, 7/8 in OD, 3/8 in Width, 1910 lb Load, Stainless Steel Bearing, 250 °F Sealed, Polished Chrome