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。
plastic polyamide (nylon) seal material, 2.0312 inches nominal overall length, contact bearing seal type, 1.2490 inches minimum and 1.2500 inches maximum overall outside diameter, 0.7450 inches minimum and 0.7500 inches maximum outer ring width