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。
steel end platesteel outer ringsteel rollerplastic polyamide (nylon) sealsteel stud material, 0.3750 inches nominal thread size, 0.4950 inches minimum and 0.5000 inches maximum outer ring width, 1.3750 inches nominal overall length, 0.7490 inches minimum and 0.7500 inches maximum overall outside diameter