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WLY50型轮胎式单斗液压挖掘机,是建设部和机械部下达的新产品开发课题。两台样机(见外型图)均於1986年12月10日通过了部级技术鉴定。该机采用机械行走,中高压定量液压系统,在元件选择上优先采用引进技术生产的产品和国内量大面广的优质产品作为配套件,如:发动机、前后桥、液压马达、液压泵、回转支承
The WLY50 type single bucket hydraulic excavator is a new product development issue issued by the Ministry of Construction and the Ministry of Machinery. Both prototypes (see outline drawing) passed the ministerial technical appraisal on December 10, 1986. This machine adopts mechanical walking, medium and high pressure quantitative hydraulic system, priority is given to the selection of components for the production of imported products and large quantities of high quality domestic products as supporting parts, such as: engine, front and rear axle, hydraulic motor, hydraulic pump, and rotary Supports