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。
rigid alignment type, 1.9950 inches minimum and 2.0000 inches maximum overall width, steel or copper alloy retainer material, 4.9990 inches minimum and 5.0000 inches maximum overall outside diameter, 4.0012 inches minimum and 4.0024 inches maximum bore diameter