Since the electric pump suction and pressure oil pump is any difference between electric motor pump plays an important role in engineering construction, machinery and equipment is one of the common. Electric pump in accordance with the current market can be divided into self-absorbing oil type and pressure electric pump two kinds of oil, for these two types of equipment, small for you to explain the difference. We use self-absorbing ability of self-absorbing strong electric pump, no external oil. The oil pressure electric pump powered by DSD has a pressure tank electric pump, but also pump up the oil itself with the cylinder to provide pressure oil pump inlet port. Lubrication, corrosion, cooling, washing and so on between the various components. Therefore, the electric pump lubricant also note the following aspects in the selection: appropriate viscosity, good viscosity-temperature characteristics. Viscosity is the first considerations in selecting lubricants electric pump manufacturer, under the same operating pressure, the viscosity is too high, the movement of hydraulic components increase resistance heating accelerate the pump self-priming capability decrease manifold pressure drop and power loss is increased; If the viscosity is too low, increase the volume loss of the electric pump, and the leakage increases the element, and the slide member oil film is thin, the support ability. Common types of pump: 1, can be adjusted according to whether the flow can be divided into: variable displacement pump and dosing pumps. Output flow can be adjusted as needed is called variable displacement pump, the flow rate can not be adjusted is called a metering pump. 2, according to the hydraulic system commonly used pump structure is divided into: gear pumps, vane pumps and piston pumps three kinds. Gear pumps: smaller, simpler structure LSJ4 * 400 electric pumps for oil strict cleanliness requirements, the price is cheaper; but the shaft by the unbalanced force, badly worn, leaking large. Vane pump: divided double acting and single acting vane pump vane pump. The pump flow evenly, smooth operation, low noise, high efficiency for the pressure and volume than the gear pump, complex structure than the gear pump. Piston: high volumetric efficiency, the leak is small, can work under pressure, mostly for high power hydraulic system; but the complex structure, materials and processing high precision, expensive, high oil cleanliness requirements. Electric pump price | Lu Hydraulic (certified) | electric pump provided by the Texas Lu force hydraulic machinery plant. Texas Lu force hydraulic machinery plant (www.luliyeya.com) is a leader in Dezhou, hydraulic machinery and parts, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lu Hydraulic leadership with the staff warmly welcome all inquiries negotiations to create Lu hydraulic force a better future.