lubrication hole

基本解释

They have an annular groove and lubrication hole in the outer ring to ensure efficient lubrication.
这些组件在外圈上有环形槽和润滑孔，确保有效润滑。
To ensure efficient lubrication, the needle roller bearing has an annular groove and lubrication hole in the outer ring.
为了确保有效润滑，滚针轴承的外圈上有环形槽和润滑孔。
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应时产生的小颗粒堵塞轴承润滑孔及磨损轴承，导致轴承失效。