Variable radial piston pump variable displacement pump includes a piston and shaft eccentric eccentric variable pump * refinement, including the swash plate type axial piston variable displacement pump and Cline - variable motor speed control loop speed range equal to pump motor speed range and speed range Rp Rm seed multiplication circuit for high-power hydraulic system is particularly suitable for systems with two or more hydraulic pumps and hydraulic motors can require separate occasions for speed variable hydraulic pump and variable motor There are various variables institutions * variable pump maintenance, which can be divided into two categories: the first category divided according to type manually operated, motorized, electric, hydraulic and electro-hydraulic proportional control control, etc., are applied to the signal control variables; The second class by adjusting the way to distinguish, which automatically controls the pump (motor) basic parameters (including pressure, flow, power, etc.) change according to certain rules, such as constant power, constant pressure, constant flow. * Variable pump hydraulic refinement _ Crystal Chong (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.