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我 公 司 一 台 加 藤KATOHD-1250V Ⅱ型全液压挖掘机使用中发现,斗杆前端衬套的承孔严重磨损,形成不规则的椭圆形。将承孔镗削加大恢复圆柱形以后,承孔与原装衬套外径无法配合,同时考虑到进口配件价格昂贵,决定自制修复衬套和销轴,但自制件装机后,不是发生销轴与衬套
I used a Kato KATOHD-1250V Ⅱ hydraulic excavator in our company and found that the bearing bore of the front bushing of the arm was seriously worn and formed an irregular oval shape. After the boring hole is enlarged and the cylindrical shape is restored, the bearing bore can not match the outer diameter of the original bushing. At the same time, considering that the imported parts are expensive, the self-repairing bushing and the pin shaft are determined. However, With bushing