A single or multiple-row antifriction bearing used with or without inner or outer races characterized by relatively small size rollers usually not ranging above 0.250 inch (6.35mm) diameter and generally longer in length in relation to diameter.
mil-g-23827 mil spec single material response lubrication material document and classification, 0.5260 inches minimum and 0.5310 inches maximum outer ring width, 0.9370 inches minimum and 0.9375 inches maximum overall outside diameter, grease lubrication material, rigid alignment type