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.
rigid alignment type, 3.9504 inches nominal overall outside diameter, 3.0984 inches nominal bore diameter, 1.6500 inches nominal outer ring width, 2.1850 inches nominal inner ring width