Hydraulic (liquid pressure) is generated by the pump. There are a variety of pumps: vane pumps, gear pumps, screw pumps, piston pumps, ....... There are a number of different structures in each type. You ask piston pump, there are multiple styles, structures. The radial, axial, single plunger multi plunger, ....... They have one thing in common: The plunger plug in the hole, the plunger reciprocates in the hole, (the same as the bellows) Repair of hydraulic motors, oil, drain. Put the pressure of pressurized oil into the oil. The order of the scale value used is the study of a particular order corresponding. For example, to the upper social strata, the upper, middle, lower middle class, the next lower layer, etc. are labeled respectively "5,4,3,2,1" or "3,2.5,2,1.5,1" belongs to this category. Which represents only the upper layer of the upper layer 5 and the representation gap 4 Liyuan Hydraulic motors, and represent the upper 4 and 3 indicates the difference between the middle, is not necessarily equal. 5,4,3, etc. are added to the list of any sign of the hydraulic motor, if recorded as 100,50,10 it anyway. Spacing value scale installation of the hydraulic motor is used, not only that the amount of measured how much has, also said the size of the extent of their size, that is the interval. However, the origin of this scale can be arbitrarily set, but it does not mean that the amount of the things that is "no." For example, O ° C is the absolute temperature 273 ° K, F 32 ° F. Liyuan Hydraulic motors | crystal create a hydraulic (Online) | hydraulic motors from Jinan Jing Chong Hydraulic Machinery Limited. Jinan Jing Chong Hydraulic Machinery Co., Ltd. (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, and satisfy customer needs. In the crystal creating hydraulic leadership with the staff warmly welcome all inquiries negotiations to create the crystal creating hydraulic better future.