Hydraulic pump to provide pressurized fluid to a hydraulic device for hydraulic transmission, is a pump. Its function is to power machine (such as a motor and an internal combustion engine, etc.) of the mechanical energy into pressure energy of the liquid. Single piston pump works by the motor cam is rotated, the cam pushing the sealed volume when the upward movement of the plunger hydraulic motor, piston and cylinder is formed is reduced, the oil is extruded from the sealed volume, through the check valve routed to where it is needed. When the cam portion is rotated to decrease the curve, the spring forces the plunger downwardly, a certain degree of vacuum, the oil tank into the sealed volume under the effect of atmospheric pressure. Cam plunger lift hydraulic motor constantly domestic repair phone periodically sealed volume decrease and increase, the pump will continue to suction and discharge of oil. The actual working pressure of the pump is determined by the load size, of course, and then a big load of domestic refinement hydraulic motor can not exceed the maximum pressure of the pump design. If the domestic maintenance dosing pumps hydraulic motors, flow through an external valve adjustment you will not change the output pressure of the pump, but if your load is very small, even the oil pump are back in the tank, then pump it pressure can not build up. If the variable displacement pump, it is a great relationship, the specific flow curve depends on some pressure hour, traffic flow; pressure, the flow is small. For example, constant power variable pump. Domestic service hydraulic motor, hydraulic motors, hydraulic pressure from Jinan Jing Jing Chong Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement to create innovative ideas will lead crystal hydraulic and you hand into the brilliant, for a better future! You can also access (www.jnjcyy.com/supply_details_51402740.html), for more information about the company.