How often does the hydraulic wrench need to change the hydraulic oil?
October 22, 2021
How often does the hydraulic wrench need to change the hydraulic oil? We know that the torque of hydraulic wrenches mainly depends on the conversion of oil pressure provided by the special pump station for hydraulic wrenches. Then, it can be said that the quality and condition of hydraulic oil have the most important influence on the work of hydraulic wrenches. We have clear requirements for the hydraulic oil used in the hydraulic wrench pump station, so the oil selection will generally not cause problems, but how to determine whether the hydraulic oil needs to be replaced during use requires us to pay attention to the state of the oil during use. Sure. So what kind of status needs to be replaced?
How often does the hydraulic wrench change the hydraulic oil? Generally speaking, we recommend that the hydraulic wrench pump should be replaced with new hydraulic oil after the first 100 hours of use, and then every 500 hours of use. However, in actual use, there is basically no way to determine the specific length of time used, so it can only be judged by checking the color state of the hydraulic oil. Observe that the color of the hydraulic oil turns black. It is most likely that the distribution valve spool is running back and forth, and the hydraulic cylinder is running back and forth. This is a phenomenon that will not occur in a short time. Once it occurs, it means that the hydraulic oil needs to be replaced. And do maintenance. Three simpler methods to confirm whether the oil needs to be changed?
1. Regular oil change method According to the environmental conditions, working conditions and oil change intervals of the oil used at the site where the equipment is located, the oil should be replaced when it is due. This method is very suitable for enterprises with more hydraulic equipment. 2. Visual oil change method Under what circumstances need to replace the hydraulic oil? It is based on the experience of the maintenance personnel, according to the visual observation of some regular state changes of the oil, such as the oil turning black, smelly, turning to milky white, etc., to decide whether to change the oil. 3. Sampling and testing method Regularly sample and test the oil in the hydraulic press to determine the necessary items (such as viscosity, acid value, moisture, particle size and content, corrosion, etc.) and indicators, according to the actual measured value of the oil quality and the specified oil degradation standards By comparison, determine whether the oil should be changed or not. What factors affect the service life of hydraulic wrenches? The frequency of daily use is high, and for a long time. In addition, it is also very important to maintain the hydraulic wrench. If the hydraulic oil is not changed frequently and wiped frequently, the surface will be stained with dust or oil. Keep the wrench as clean as possible. In addition, for the working environment used, the surrounding environment should be kept as clean and tidy as possible to prevent small oily fume, dirt and dust from entering the hydraulic wrench to affect its performance and service life. How to extend the service life of hydraulic wrenches? 1. Unused amateur operators must carefully read and understand the operation manual, have a deep understanding of the accumulation principle, installation, commissioning, test machine, operation, maintenance and maintenance of hydraulic wrenches, and have undergone operation training and special assessment , Confirm that its ability can be competent for this job before operation. 2. Selection of hydraulic oil: anti-wear hydraulic oil must be used. The density of hydraulic oil is required to be 0.884G/CM2, flash point 255℃, pour point -9℃, viscosity 68CM2/S (40℃), 8.8CM2/(100 ℃), the viscosity index of 102. The use of this hydraulic oil can stabilize the hydraulic system of the hydraulic torque wrench, reduce the influence of oil temperature on viscosity, enhance the wear and corrosion resistance of the system, and is beneficial to the extremely tight work of the cylinder of the hydraulic torque wrench. 3. Control the oil temperature of the system: the minimum oil temperature allowed by the system is 25℃. The best working temperature is 35°C-45°C, exceeding 45°C is detrimental to the system. If it exceeds the specified value, the system shall be inspected for timely investigation. 4. Check and find problems in time: When the hydraulic system fails, analyze the cause in time, eliminate the failure, and do not allow the hydraulic torque wrench to work with illness and cause major accidents. 5. Frequent inspection and regular tightening of pipe joints to prevent loosening and oil leakage.
