Variable piston pump with axial and radial variable displacement piston variable piston pump two kinds. Now axial variable piston example to illustrate how it works: When the motor drives the shaft rotates, the pump cylinder rotates together with the plunger, the plunger head is kept in contact with the swash plate, the swash plate and the cylinder at an angle oblique disc does not rotate. When the cylinder rotates, due to the action of the swash plate slant, the plunger will be reciprocated in the pump cylinder. Go low when the plunger swash plate, piston-cylinder volume increases, so the liquid through the oil pan of the suction port cylinder inhalation; and when the plunger swash plate to a high point, piston-cylinder volume decreases, cylinder liquid through the outlet of the oil pan drain fluid. As long as the constant rotation of the drive shaft, the liquid will continue to be sucked and discharged. Change the swash plate angle of the hydraulic pump, you can change the plunger in the pump cylinder stroke length of the hydraulic pump repair, you can change the pump flow. Fixed tilt angle is called quantitative pump, the tilt angle can be changed it is called a variable pump. Influence the choice of general particle filter contaminants in 10μm or less to overhaul hydraulic pump less obvious, but more than 10μm, to pump life have significant impact, especially in 40μm or more. Solid particle contamination of hydraulic oil pump is relatively easy to make sports part surface wear and tear, which requires installation of the oil filter to reduce pollution levels. Filtration precision: axial piston pump 10 ~ 15μm, vane pump is 25μm, the gear pump is 40μm. Pollution wear pump can be controlled within the allowable range. Currently the increasingly widespread use of high-precision filter, can significantly extend the life of the pump. Overhaul of hydraulic pumps, hydraulic creating crystal factory direct (certification), the hydraulic 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 creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.