Sealed volume pump are relying on the principle of changes to the work, it is generally referred to as a positive displacement pump plunger 2 is mounted on the cylinder 3 to form a sealed volume a, under the action of the spring plunger 4 is always pressed on the eccentric 1. A prime mover driven eccentric rotation of the plunger 2 reciprocates, so that the size of a sealed volume generation cycle [2] of alternates. When a small to large, from the partial vacuum is formed, so that the oil tank at atmospheric pressure maintenance pump action, the suction tube to open the top one-way valve 6 into the oil chamber a suction is achieved; on the contrary, when a hour from big, a suction chamber full of oil will top the one-way valve 5 into open systems achieve oil pressure. Such pump to the prime mover input mechanical energy into fluid pressure energy, the prime mover driven eccentric continues to rotate, the pump will continue to suction and pressure oil. A8V hydraulic piston pump Specifications: A8V40,55,64,80,107 Description: A8V bent axis type axial piston variable double pump structure Cline, a total of two pump pump housing sales, the control device is usually superimposed HP total power constant control, in addition to a separate single pump constant power control. Flow and speed and a positive displacement pump this may be posing a = stepless variable angle between 25 ° ~ 7 °. Features: between the rotor and the oil pan with oil pump repair spherical in the movement can automatically pair, peripheral speed of the lower and higher efficiency. Note: 1. Cleanliness should be maintained for any occasion hydraulic oil; 2. Periodic replacement of the hydraulic oil (working from 1000 to 3000 hours or six months). _ Creating a hydraulic pump repair grain price (certification) _ pumps 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 creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.