A2F quantitative piston pump with a fixed displacement pump or as a hydrostatic drive motor in open or closed systems. When used as a pump, flow proportional to the rotational speed and the displacement. When used as a motor, and the displacement is proportional to the number of output revolutions is inversely proportional with the displacement. Output torque with increasing pressure of the high pressure side and low pressure side increases. Shaft radial loads; cylinder and oil pan with oil using a spherical, rotating automatically in pairs, small peripheral speed, high efficiency; low noise of this series of products for Cline structure for open or closed hydrostatic transmission system into the oil pipeline is too small, into the oil filter flow capacity is too small or clogged air sucked into the pipeline, oil excluded too high, too low oil shortage and high pressure piping suction generated strike and other hydraulic fluid maintenance, will produce noise. Therefore, the sale must be properly designed hydraulic tank, the correct choice of filters, tubing and directional valve. Excessive heat pump hot folding hydraulic pump maintenance for two reasons, first, the mechanical friction and heat. Since the motion friction surface is dry or semi-dry friction state, friction between the moving parts of the heat. The second is a liquid friction and heat. High pressure oil leak through various gaps to pump low pressure chamber, a large number of hydraulic energy into heat energy loss. Therefore, the correct choice of the gap between the moving parts, fuel tank capacity and cooler, you can put an end to excessive heat pumps and high oil temperature phenomenon. In addition, the return oil back to the oil filter clogging caused by excessive back pressure, oil temperature is too high and can cause the pump to overheat. Pump repair, crystal creating hydraulic (certified), the hydraulic pump by 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.