The hydraulic oil used by the hydraulic jack plays a great role in the release of the function of the jack.Hydraulic jack internal oil selection 32# or 46# anti-wear hydraulic oil, oil stability, fit the requirements of the jack.
When we choose hydraulic oil for mechanical floor jack, we mainly consider the following factors:
1, suitable viscosity, outstanding viscosity-temperature characteristics
Viscosity is the first factor to consider when selecting hydraulic oil. Under the same operating pressure, the viscosity is too high, the movement resistance of hydraulic components is added, and the self-priming ability of the hydraulic pump can be decreased by accelerating the temperature, and the pressure drop and power loss of the pipeline increase.If the viscosity is too low, the volume loss of the hydraulic pump will be added, the leakage of the components will increase, and the oil film of the sliding parts will become thin, and the support will be able to decline.
2, excellent lubrication (wear resistance)
The hydraulic system has a lot of moving parts need lubrication to prevent the wear of the relative moving surface, especially the high pressure system, the wear resistance of the hydraulic oil requirements are much higher.
3. Excellent antioxidant properties
The hydraulic oil will also be oxidized in the process of use. After the oxidation of the hydraulic oil, the acid will add corrosion to the metal, and the sludge sediment will block the filter and small gaps, so that the hydraulic system is not normal, so it requires excellent oxidation resistance
4. Excellent shear stability resistance
Because the hydraulic oil through the pump, valve saving mouth and gap, to experience intense shear action, leading to some of the macromolecular polymer in the oil such as viscosifying agent molecular cracking, into small molecules, the viscosity is reduced, when the viscosity is reduced to a certain degree of oil can not be used, so it requires excellent shear resistance function.
5, excellent rust and corrosion prevention
In the process of using hydraulic oil, it is inevitable to touch water and air, as well as acid substances occurring after oxidation, which will rust and corrode the metal and affect the normal operation of the hydraulic system.
6. Excellent anti-emulsification and hydrolysis stability
Hydraulic oil during the operation from different ways of mixing water and condensate under the hydraulic pump and other components.
7. Excellent resistance to foam and air release
In the hydraulic tank, because oil mixed with air bubbles in the oil circulation, not only can reduce the pressure of the system, the lubrication condition is bad, also can produce abnormal noise, vibration, air bubbles also add the area of the oil with air to touch, accelerated the oil oxidation, therefore requires the hydraulic oil has excellent resistance to bubble and air release.
8, the habit of sealing materials
hydraulic mechanical jacks because of the habit of hydraulic oil and sealing material is not good, it will make the sealing material swell, soften or harden to lose the sealing function, so the hydraulic oil and sealing material can be used to each other.
Post time: Jun-03-2021