In recent years, with the continuous optimization and upgrading of digital production and intelligent manufacturing process, our company has successively innovated and developed a variety of models. The comprehensive performance of the new model is more prominent, but whether it can work reliably, sensitively, accurately, effectively and economically is closely related to the quality of the selected hydraulic oil. Therefore, the selection of high-quality hydraulic oil is the premise to ensure the long-term work of the excavator.
1. Viscosity and viscosity temperature characteristics
When the excavator is working, the hydraulic oil with good viscosity temperature characteristics can ensure that the hydraulic components can be well lubricated, cooled and sealed under the condition of changes in working pressure and temperature.
2. Compression and wear resistance
At present, the working pressure of most excavators is generally 21-35mpa, up to 42MPa. Under long-time high-pressure operation, good compression and wear resistance is required to ensure that the friction pairs in oil pump, hydraulic motor, control valve and oil cylinder are lubricated normally under high-pressure, high-speed and harsh conditions, reduce the wear of hydraulic parts and improve operation efficiency.
3. Static friction coefficient
The hydraulic oil required by the excavator hydraulic system has a high static friction coefficient, while the static friction coefficient of some inferior hydraulic oil is relatively low, which will lead to the action lag or failure of the excavator in operation. Therefore, the excavator has strict requirements for anti-wear hydraulic oil, and the use of low-quality hydraulic oil is easy to cause various faults of the excavator.
4. Oxidation resistance
The internal structure of Engineering excavator is relatively compact, and the capacity of hydraulic oil tank is relatively small. Therefore, it may cause the oil to oxidize and deteriorate too quickly and shorten the service life of the oil. Therefore, the hydraulic oil with higher oxidation resistance will have a longer service life.
5. Demulsibility
The better anti emulsification property enables the machine to quickly separate oil and water in the process of operation. The use of water and materials will reduce the corrosion performance of metal components of the hydraulic system.
6. Good foam resistance and air release value
It is guaranteed that foam produced by mechanical stirring will disappear quickly during operation. The air mixed into the hydraulic oil can be released in a short time to realize accurate, sensitive and stable transmission of static pressure.
At present, the quality of hydraulic oil in the market is uneven, and inferior oil products often appear. Most customers do not realize the importance of hydraulic oil and are still using low-quality anti-wear hydraulic oil, which leads to continuous failure of excavator. The use of inferior hydraulic oil will aggravate the early wear of the hydraulic system, and even cause serious damage to the hydraulic system, increasing huge maintenance costs. For the long-term use and correct maintenance of the excavator, please try to choose the original anti-wear hydraulic oil.
