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。
0.7493 inches minimum and 0.7500 inches maximum bore diameter, rigid alignment type, 1.8740 inches minimum and 1.8750 inches maximum overall outside diameter, 0.7200 inches minimum and 0.7250 inches maximum outer ring width, 0.8450 inches minimum and 0.8500 inches maximum inner ring width