lubrication hole

基本解释

They have an annular groove and lubrication hole in the outer ring to ensure efficient lubrication.
這些組件在外圈上有環形槽和潤滑孔，確保有傚潤滑。
To ensure efficient lubrication, the needle roller bearing has an annular groove and lubrication hole in the outer ring.
爲了確保有傚潤滑，滾針軸承的外圈上有環形槽和潤滑孔。
The bearing stoppage is primarily attributed to the lubrication hole stoppage and bearing abrasion by the minor particles produced during the reaction.
主要故障是物料在反應時産生的小顆粒堵塞軸承潤滑孔及磨損軸承，導致軸承失傚。