在阀门处于压力负载下，不需要拆卸轴环衬套。
上部和下部衬套符合流畅平稳轻松操作阀门的标准要求。
Upper and lower bushings are standard for smooth valve operation.
本发明还涉及一种具有衬套本体（2）的汽缸衬套（1）。
The invention further relates to a cylinder sleeve (1) having a sleeve body (2).
齿轮泵主动轴与衬套磨损后，其配合间隙增大，必将影响泵油量。
Pump drive shaft and bushing wear, the tolerance clearance increases, will affect oil pump.
齿轮泵主动轴与衬套磨损后，其配合间隙增大，必将影响泵油量。
Pump drive shaft and bushing wear, the tolerance clearance increases, will affect oil pump.
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