Piston pump (piston pump, plunger pump) are positive displacement pump hydraulic domestic refinement, reciprocating pumps. Pressure piston is reciprocated by the plunger in the plunger cylinder piston in the cylinder caused by a change in the sealed volume difference resulting from the fluid medium leaving work. Changes in the working stroke of the plunger can control the size of the piston flow. Hydraulic and pneumatic drive piston is an important working parts. Into common piston radial piston pump, axial piston pump. Hydraulic motors generally require inversion, so the internal structure should have symmetry, but the hydraulic pump is generally rotated in one direction, do not have this requirement. In order to reduce drag pump suction domestic monopoly, reducing the radial force, general pump suction port is larger than the size of the oil port. Low pressure and the pressure of the hydraulic motor is slightly higher than the atmospheric pressure chamber, so there is no above-mentioned requirements. Hydraulic motor requirements can work in a wide speed range, therefore, should be used hydraulic bearings or hydrostatic bearings. Because when the motor speed is low, the use of hydrodynamic bearings, it is not easy to form a lubricating synovial. Vane pump with rotor blades together rely on high-speed rotation of the centrifugal force generated by the inner surface of the stator blade is always snapped, and from seal oil, the formation of the working volume. If its use as a motor, blade root must be spring loaded hydraulic motor to ensure that the inner surface of the stator blade is always snapped to the normal starter motor. Pump in the structure need to ensure self-priming capability, but it is not required for the hydraulic motor. Hydraulic motor must have a large starting torque. The so-called starting torque, the motor is activated by a stationary state, torque hydraulic motor shaft can maintain domestic output torque of the torque is generally greater than in the running state of the work at the same pressure, so as far as possible in order to make the starting torque close to work under the torque required motor torque pulsation is small, a small internal friction. Domestic pump maintenance, 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. You can also access (www.jnjcyy.com/supply_details_51708380.html), for more information about the company.