1. Select according to the working pressure of the hydraulic system. Different working pressures have different requirements for the quality of hydraulic oil. The increase of system working pressure requires that the anti-wear, anti-oxidation, anti-foaming, anti-emulsification and hydrolysis stability properties of the hydraulic oil should also be improved. At the same time, in order to prevent leakage caused by the increase in pressure, the viscosity of the hydraulic oil should also increase accordingly; otherwise, choose low-viscosity hydraulic oil.
2. Select according to the ambient temperature of use. In machines with high ambient temperatures or close to heat sources, oils with high viscosity-temperature (the viscosity of oil changes with temperature, that is, viscosity-temperature) or flame-retardant oils should be given priority. In situations with harsh working conditions, in order to ensure the safety and reliability of the system, oil with good viscosity-temperature characteristics, thermal stability, lubricity and anti-corrosion properties must be selected.
3. Select according to the sealing material. The material of the seals of the hydraulic device is compatible with the oil used in the system. Otherwise, the seals will expand, shrink, erode, dissolve, etc., resulting in a decrease in system performance. For example, HM anti-wear hydraulic oil and natural rubber, butyl rubber, Ethylene rubber, silicone rubber, etc. have poor compatibility, which should be paid attention to in actual use.
If you need to buy excavator oil or other accessories, you can contact us at any time. If you are interested in excavators, you can also contact us. CCMIE has long-term supply of new XCMG excavators and second-hand excavators of other brands.
Post time: May-07-2024