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.
steel overall material, 0.4990 inches minimum and 0.5000 inches maximum overall outside diameter, 0.4270 inches minimum and 0.4370 inches maximum overall width, rigid alignment type, 0.3115 inches minimum and 0.3120 inches maximum bore diameter