實心或空心結構的圓柱體,為滾子軸承提供滾動元件。
4.999 inches minimum and 5.000 inches maximum overall width, single row, non-locating, two lip inner ring, cylindrical outer ring with two roller retainment rings on outer, non-separable style designator, 1.750 inches nominal bore diameter, 2.865 inches minimum and 2.880 inches maximum overall outside diameter