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, 66 fed std 1st material response or sae assn std 2nd material response roller material document and classification, 0.1566 inches minimum and 0.1576 inches maximum bore diameter, 0.2120 inches minimum and 0.3120 inches maximum overall width, 0.2812 inches nominal overall outside diameter