Will the equipment that has been shut down for a long time still operate normally after restarting? What are the "pitfalls" of daily lubrication maintenance?
author: Leila
2024-12-23
Starting from the importance of lubrication management of construction machinery equipment, the key points of restarting and daily lubrication maintenance of various parts of the equipment such as engines, hydraulic systems, closed gear transmission devices, open gear rings and other devices are explained in detail.
Basically, there will be no high temperature problem of hydraulic oil in new cars, and the replacement cycle can be replaced according to the manufacturer's guidance standards. But when the car is old, it is easy to have high water temperature and high oil temperature. How should the replacement cycle of hydraulic oil be adjusted at this time?
After the equipment is used to a certain extent, the state of the equipment will change, which is a normal phenomenon. However, if the equipment is always in a high temperature state, it will inevitably have a certain impact on the quality and service life of the hydraulic oil. On the one hand, if the hydraulic oil temperature is above 70 degrees, the oxidation rate of the oil will accelerate for every 10 degrees increase, and the service life of the hydraulic oil will be shortened accordingly. On the other hand, the hydraulic system of the equipment generally has a temperature setting value. For example, when the temperature reaches 95 degrees, the equipment will automatically shut down, which will greatly affect the production efficiency of the enterprise. Therefore, if the hydraulic system is often in a high temperature state, further investigation should be done to find out the root cause, whether it is due to poor heat dissipation or abnormal internal wear.
Should the hydraulic oil be changed once a year?
The oil change cycle varies with the quality of hydraulic oil. Generally, the more common hydraulic oil can be changed in about 2000 hours if the equipment is well maintained and the oil is less polluted. If it is a high-quality hydraulic oil, such as Mobil DTE? 20 UT long-lasting hydraulic oil, it has good antioxidant properties and a longer service life than ordinary hydraulic oil. In short, the replacement cycle of hydraulic oil is different, which is mainly determined by the quality of the oil and the maintenance of the equipment. Of course, the most scientific way is to judge when to change the hydraulic oil based on the results of oil sample analysis.
Is the blackening of the cylinder related to the hydraulic oil?
The blackening of the cylinder surface may be due to poor screw plating process. The cylinder is generally bright. If it is the original configuration, it will generally not be blackened after long use. If this happens, you need to check whether the electroplating technology is qualified. In addition, the cylinder may be black because the piston rod is often in contact with low temperature under high temperature, which may cause discoloration.
What does hydraulic oil testing generally test? How long does it take to get the results?
Generally, oil sample testing includes viscosity, oxidation, moisture, wear metal, etc. Compared with other oil products, hydraulic oil will also increase the cleanliness test. Generally, the laboratory can get the results within 2-3 days after receiving the oil sample.
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