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 angle of the hydraulic pump and the cylinder into a repair, the swash plate does not turn. When domestic hydraulic cylinder rotating, since the role 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 high hydraulic pumps, piston-cylinder volume is gradually reduced small, export the fuel tank of liquid through 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, you can change the plunger in the pump cylinder stroke length, 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. Swash plate type axial piston pump generally used to rotate the cylinder, end assignment form. End surface of the cylinder by a double set with a metal plate and steel valve plate consisting of friction, and most are methods using plane assignment, so maintenance is more convenient. Oil pan is one of the key components of an axial piston pump, when the pump high-pressure oil on the one hand the working chamber of the cylinder to the oil pan, on the other hand with film pressure between the oil pan and the cylinder block the formation of hydraulic cylinder so that the cylinder away from the thrust reverser with the oil pan. Cylinder oil pan design of hydraulic compression force Fn slightly larger than the valve plate hydraulic cylinder thrust reversers on Ff, namely Fn / Ff = 1.05 ~ 1.1, the pump is working properly and to maintain a high volumetric efficiency. Hydraulic pump sales, hydraulic pumps, hydraulic creating crystal grain quality assurance by the Jinan Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (www.jnjcyy.com) (www.jnjcyy.com) strong, credible, in Jinan, Shandong mining machinery industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead crystal create hydraulic and you hand into the brilliant, for a better future!