When selecting low temperature anti-wear hydraulic oil for construction machinery, the viscosity, anti-wear performance, anti rust and anti-oxidation performance, anti foam performance and temperature characteristics of the hydraulic oil should be considered. ‌

Viscosity: Choose the appropriate viscosity grade to ensure that the flow performance, viscosity, flow rate, and other characteristics of hydraulic oil remain stable at different temperatures. For example, hydraulic oils with different viscosity grades such as 32, 46, 68, 100, 150, etc. can be selected according to the working environment and temperature conditions of construction machinery.

Wear resistance performance: Hydraulic oil needs to withstand the inertia force of hydraulic pumps and the frictional resistance of system valve cores, as well as the frictional resistance of various hydraulic cylinders under high pressure, so it needs to have good wear resistance performance to ensure the normal operation of the system.

Rust prevention and oxidation resistance: Hydraulic oil should have good rust prevention and oxidation resistance, which can reduce the corrosion and oxidation of internal parts of the hydraulic system, thereby extending the service life of the system.

Anti foam performance: the hydraulic oil shall have good anti foam performance to avoid unstable pressure of the system due to excessive foam in the oil during high-speed operation.

Temperature characteristics: The performance of hydraulic oil should remain stable at different operating temperatures. Especially under low temperature conditions, selecting suitable hydraulic oil is the key to ensuring the normal operation of the hydraulic system. For example, in extreme low temperature environments of minus 30 degrees Celsius, selecting the appropriate hydraulic oil is key to ensuring the normal operation of the hydraulic system. By following the oil selection recommendations, the hydraulic system can still perform at its best under harsh low temperature conditions.

In conclusion, when selecting low temperature anti-wear hydraulic oil for construction machinery, the viscosity, anti-wear performance, rust and anti-oxidation performance, anti foam performance and temperature characteristics of the hydraulic oil should be comprehensively considered to ensure that the construction machinery can operate safely and effectively under various working conditions.