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.
0.4950 inches minimum and 0.5000 inches maximum outer ring width, rigid alignment type, lubricant lubrication material, 0.2496 inches minimum and 0.2500 inches maximum bore diameter, 0.5525 inches minimum and 0.5675 inches maximum inner ring width