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。
0.3743 inches minimum and 0.3750 inches maximum bore diameter, 0.9990 inches minimum and 1.0000 inches maximum overall outside diameter, 0.2810 inches nominal outer ring width, rigid alignment type, 0.3750 inches nominal inner ring width