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。
0.6825 inches minimum and 0.6828 inches maximum overall outside diameter, steel overall material, rigid alignment type, 0.4998 inches minimum and 0.5001 inches maximum bore diameter, 0.3020 inches minimum and 0.3120 inches maximum overall width