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 cam is rotated by the motor, when the upward movement of the cam push the plunger, piston and cylinder form a sealed volume decrease (hydraulic motor) refinement, oil squeezed out of the sealed volume, discharged through the check valve to go where they are 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 constantly lift the plunger, sealed volume decreases and increases periodically (hydraulic motor) agents, have continued to pump suction and discharge of oil. When the spring is compressed to its thrust is greater than the static friction starts to move. Once the body begins to move (hydraulic motor) specializing in the resistance suddenly decreases hydraulic motors, sudden acceleration and movement of objects, the result also allows to reduce the amount of compression springs, thrust decreases, the inertia of the object after relying on forward journey stopped until spring The move also allows the spring compression, thrust increase, until the object is again vibrant, (hydraulic motor) repair, crystal create a hydraulic (certified), hydraulic motor 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.