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。
20.0 millimeters nominal bore diameter, 26.0 millimeters nominal overall outside diameter, 18.0 millimeters nominal overall width, rigid alignment type, contact bearing seal type