WK—4挖掘机行走三段轴外轴承挡尘装置如图I所示。由于挡尘板与轴一起转动,因为铜套端部磨损严重。使间隙C加大,泥、沙大量进入轴承内,有时还导致油孔堵塞,造成严重磨损。为了疏通油孔,往往要拆掉横轴。我矿由于地处南方,施工场地泥沙多,经常出现 WK-4 excavators walking outside the shaft bearing dust device shown in Figure I. As the dust plate with the shaft rotation, because copper sleeve end wear serious. C increased the gap, mud, sand into the bearing a large number of, and sometimes lead to blockage of the oil hole, causing serious wear and tear. In order to clear the hole, often have to remove the horizontal axis. Due to the fact that mine is located in the south, there are many silts on the construction site, which often appear