由滾輪和螺柱組成的組件,用於與凸輪產生滾動接觸,並將往復運動或振盪運動轉換為線性運動。
2.7500 inches nominal overall length, 0.9940 inches minimum and 1.0000 inches maximum outer ring width, qq-c-320 fed spec 1st material response and gqq-p-416 mil spec 2nd material response outer ring material document and classification, 1.8745 inches minimum and 1.8760 inches maximum overall outside diameter, b-1b bomber end item identification