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。
0.5000 inches nominal stud diameter, as differentiated by material which must conform to ships parts control center special quality control provisions and certified free from mercury contamination reference number differentiating characteristics, 2.0000 inches nominal overall outside diameter