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。
afbma std tolerance for industrial needle bearings standard tolerance designation, rigid alignment type, 0.8125 inches nominal bore diameter, 0.5000 inches nominal overall width, 1.0625 inches nominal overall outside diameter