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。
0.5625 inches nominal overall outside diameter, open end,extra capacity outer race,oil hole in outer race special features, rigid alignment type, 0.3750 inches nominal bore diameter, 0.5000 inches nominal overall width