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What do I need to pay attention to when changing the lubricant of the gear reducer?
When replacing the lubricant for the gear reducer, you need to pay attention to the following points:
First, choose the right lubricant
- Model matching
- It is necessary to choose a lubricant that matches the model and specifications of the gear reducer as well as the working environment and other factors. The lubricant requirements for different models of gearheads may be different. For example, a high-speed speed reducer may need a lubricant with lower viscosity, while a heavy-duty reducer needs a lubricant with higher load-carrying capacity.
- You can consult the gearhead's instruction manual or consult the manufacturer to determine the appropriate lubricant type and specifications.
- Reliable quality
- Choose a brand name lubricant with reliable quality and good reputation. High-quality lubricants have good anti-wear, anti-oxidation, anti-rust and anti-foaming properties, which can provide better protection for the gearbox.
- Avoid using poor quality or counterfeit lubricants to avoid damage to the reducer.
Second, the preparation work before replacement
- Stop the machine to cool down
- Before replacing the lubricant, the gear reducer should be shut down and allowed to cool to room temperature. The lubricant in high temperature state has better fluidity, but it is also easy to cause scalding, at the same time, discharging the lubricant in high temperature state may lead to incomplete discharge of the oil.
- The amount of time to wait for the gearbox to cool down can depend on the actual situation. Generally speaking, it is necessary to shut down the machine for at least 1-2 hours to make sure that the internal temperature of the gearbox is reduced to a safe range.
- Clean up the surroundings
- Clean around the area where the lubricant is to be changed to ensure that it is free of dust, debris and other contaminants. This will prevent impurities from entering the reducer during the replacement process, affecting the quality of the lubricant and the normal operation of the reducer.
- You can use a clean rag or hoover to clean up the surrounding environment.
C. Precautions during the replacement process
- Discharge the old oil
- Open the oil-discharging screw plug of the speed reducer and discharge the old lubricant into a suitable container. When discharging the old oil, pay attention to prevent the oil from splashing out and causing environmental pollution.
- During the process of discharging the old oil, you can check the colour and impurity content of the old oil at the same time to judge the wear and tear of the reducer and its operating condition.
- Cleaning the inside of the speed reducer
- After discharging the old oil, you can use cleaning agents or solvents such as paraffin to clean the inside of the reducer. Inject the cleaning agent into the inside of the speed reducer, start the speed reducer running for a few moments, and then discharge the cleaning solution. Repeat the cleaning several times until the discharged cleaning solution is clear.
- Pay attention to safety during the cleaning process to avoid splashing the cleaning agent into the eyes or skin. At the same time, make sure the cleaning fluid is discharged thoroughly to avoid residual cleaning fluid affecting the performance of the new lubricant.
- Refuelling of new oil
- Choose the appropriate refuelling tool, such as funnel, oil pump, etc., and slowly refill the new lubricant into the internal speed reducer. Pay attention to the oil level during the filling process and do not exceed the upper limit of the oil level specified in the reducer.
- You can observe the oil level through the oil scale or oil mirror on the reducer. Avoid mixing impurities when filling new oil to ensure the purity of the lubricant.
- Check the sealing performance
- After filling new oil, check whether the seals of the reducer are intact. If the seals are found to be damaged or aged, they should be replaced in time.
- Ensure that all connection parts of the reducer are well sealed to prevent lubricant leakage.
Inspection and test run after replacement
- Check the oil level
- After replacing the lubricant, check the oil level of the reducer again to ensure that the oil level is within the specified range. If the oil level is too low, the lubricant should be replenished in time; if the oil level is too high, it may lead to an increase in the internal pressure of the speed reducer, affecting the sealing performance, and some lubricant should be released appropriately.
- The oil level can be checked again after the reducer has been running for some time, because it may take some time for the newly added lubricant to be fully distributed to all parts.
- Trial run
- After replacing the lubricating oil, carry out a test run of the gear reducer. First run for a period of time without load, observe whether the operating condition of the reducer is normal, whether there is any abnormal noise, vibration or heat phenomenon. If everything is normal, it can be gradually loaded to check the performance of the reducer under different loads.
- During the trial run, pay close attention to the operating status of the reducer, if there is any abnormality, it should be immediately shut down for inspection, to find out the reason and troubleshooting in a timely manner.
In short, when replacing the lubricant for the gear reducer, choose the right lubricant, do the preparation work before replacement, pay attention to the details of the replacement process, and carry out the inspection and test run after replacement to ensure the normal operation and service life of the reducer.
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