一種單排或多排減摩軸承,帶或不帶內圈或外圈,其特點是滾輪尺寸相對較小,直徑通常不超過 0.250 英吋(6.35 毫米),長度通常比直徑長。
1.2550 inches minimum and 1.2600 inches maximum inner ring width, 2.1869 inches minimum and 2.1875 inches maximum overall outside diameter, 1.2450 inches minimum and 1.2500 inches maximum outer ring width, lips turned inwardly bearing seal type, 1.3745 inches minimum and 1.3750 inches maximum bore diameter