hot portable manual pump lightweight hydraulic hand operated oil pump
portable hand pump
As a simple and convenient hydraulic power source, ultra-high pressure hand operated oil pump is widely used in many fields, such as ship industry, coal mine machinery, petrochemical, metallurgy, electric power and heavy machinery. It is small in volume and light in weight. Easy to carry, strong security and other advantages are accepted by the majority of users.
1, suitable viscosity, good viscosity and temperature property
Viscosity is the first factor to be considered when selecting hydraulic oil. Under the same working pressure, the viscosity is too high, the hydraulic component motion resistance increases, and the self-suction ability of the heating up hydraulic pump decreases. The pressure drop and power loss increase; If the viscosity is too low, the volume loss of the hydraulic pump will be increased, the leakage inside the element will increase, and the oil film of the sliding parts will be thinned and the supporting capacity will be decreased.
2, good lubricity (antiwear)
Hydraulic-electric pump has a large number of moving parts to be lubricated to prevent the relative wear of the moving surface, especially in the system with higher pressure, the anti-wear performance of hydraulic oil is much higher.
3, good antioxidant
Hydraulic electric pump will also be oxidized in the process of use, the oxidation of hydraulic oil will increase the acid produced by the corrosion of metals, resulting in sludge sediment will plug the filter and small gaps. The hydraulic system is not working properly, so it is required to have good oxidation resistance.
4. good shear stability
Because the hydraulic oil passes through the pump, the valve throttle and the slot, must undergo the intense shear action, causes in the oil some macromolecular polymers such as the viscosity enhancement molecular fracture, becomes the small molecule, causes the viscosity to reduce. When the viscosity is reduced to a certain extent, the oil can not be used, so it is required to have good shear resistance.
We also have the electric oil pump and the single parts on it.