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。
1.5525 inches minimum and 1.5675 inches maximum inner ring width, 0.7500 inches nominal bore diameter, rigid alignment type, contact bearing seal type, 1.4950 inches minimum and 1.5000 inches maximum outer ring width