Compare with hydraulic crawler rock drill:
As the hydraulic system and diesel systems ability to adapt to the summer heat is weaker than a pneumatic crawler rock drill, and the difficulty of maintenance work volume greater than pneumatic drills. For example,Pakistan into rainy season (May - October) and dry season (November - April), rainy season hot and rainy, the temperatures between 20-40 degrees, the dry season temperatures between 30-50. For the hydraulic oil is also a serious deterioration than China, so compare with pneumatic crawler drill,the heat dissipation, maintenance, spare parts supply,etc,is a big problem. |