Good extreme pressure resistance

 

The performance of gear oils for heavy-duty vehicles. Good anti-corrosion and cleaning performance. Because the working environment of heavy-duty vehicles is generally poor, the dust and sewage in the environment are easily brought into the lubricating oil, and the temperature of the lubricating oil is high during the operation of the vehicle, which may cause complex problems. The chemical reaction produces acidic substances. In order to prevent the gear from being affected by the acidic substances in the oil and the sludge generated by the deposition of insoluble substances, the gear lubricant must have a good anti-corrosion and cleaning effect. Good extreme pressure resistance The extreme pressure performance of lubricants refers to the maximum load that the lubricant can withstand when it does not cause scratches or seizures during the pressure bearing process. Under normal operating conditions, the gear is in the state of elastic hydrodynamic lubrication of lubricating oil, but when the car is started under heavy load, climbing or encounters an impact load, a considerable part of the gear surface contact area will be in a state of boundary lubrication , The better the extreme pressure resistance of the lubricating oil, the higher the tooth surface load and impact load it can withstand. Good thermal oxidation stability The working temperature of the gear oil is high during the operation of heavy-duty vehicles. If the thermal oxidation stability of the gear oil is not good, the viscosity of the lubricating oil will increase, and the formation of sludge will affect the fluidity of the oil and produce acidity. Corrosive substances accelerate the corrosion of metals, and the polar deposits produced will also adsorb polar additives, causing the additives to precipitate out of the oil along with the deposits. These deposits will age and harden the rubber seals, and will also cover the surface of the parts. It affects heat dissipation, so gear oils for heavy-duty vehicles must have good thermal oxidation stability.

The main role of heavy-duty vehicle greases. Heavy-duty vehicle greases are mainly used to smoothly lubricate the chassis parts, universal joints and wheel bearings of vehicles, protect these parts from corrosion and wear, and at the same time, it can also play a role to a certain extent. The role of heat dissipation and vibration reduction. The performance of grease for heavy-duty vehicles The grease used for the chassis of heavy-duty vehicles requires good pressure resistance, water resistance and strong adhesion, while the grease used for hub bearings and other parts requires excellent mechanical properties. Stability, thermal oxidation stability, extreme pressure resistance and corrosion resistance.

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