Hydraulic Oil Selection: Selection 20-200Cstnian hydraulic oil viscosity hydraulic oil, recommended 30-50cST quality hydraulic oil viscosity. When the oil temperature is below 5 degrees, to deal with the hydraulic oil for heating. Cleanliness of hydraulic oil should be kept in NAS10 below should be cleaned every three months back to the oil filter cartridge variable pumps care to keep the oil flow and clean. Oil level in the oil holding ruler bits or more: When the oil level is too low variable pump, the hydraulic oil is contained in the air is not sufficiently released, so that the pumps produce much noise and damage. 1. Edit variable vane pump characteristics can have automatic high-speed traffic and compensation under the pressure setting than quantitative vane pump power loss less variable pump. The maintenance, low fever, is an energy-saving high-efficiency vane pump for the system Design Engineer at high efficiency circuit best choice. 2. The balance of quiet operation, especially for machine tools and indoor requirements. 3. containing pressure adjustment mechanism, the system can not apply direct pressure regulator and motor assembly easy. 4. A wide range of different pressures and flow range, for arbitrary choice. Variable pump. The refinement, crystal create a hydraulic (certified), variable pump from Jinan Jing Chong hydraulic machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) Shandong Jinan, mining machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the crystal to create a hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal to create a better future for the hydraulic.