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自从我矿破碎工段以PEX200X1000细碎颚式破碎机取代原来的PYD900圆锥破碎机以来，不仅提高了生产效率，降低了能耗，而且大大减轻了维修人员的劳动强度，深受生产部门的欢迎．但自1990年安装使用之后，动颚的调整座常常使用不到一个月就断，由于调整座不属易损件，没有备件，所
Since my crushing plant PEX200X1000 crushing jaw crusher to replace the original PYD900 cone crusher has not only improved production efficiency and reduce energy consumption, but also greatly reduce the labor intensity of maintenance staff, welcomed by the production sector. However, after installation and use in 1990, the movable jaw adjustment seat is often used less than a month off, because the adjustment seat is not wearing parts, there is no spare parts,