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。
0.7450 inches minimum and 0.7550 inches maximum inner ring width, 1.7510 inches minimum and 1.7519 inches maximum bore diameter, steel overall material, 2.3120 inches minimum and 2.3125 inches maximum overall outside diameter