How to choose grease for reducer maintenance

When selecting grease according to the bearing load of the travel reducer, the grease with small penetration should be selected for heavy load.When working under high pressure, it has high oil film strength and extreme pressure function in addition to small penetration.Choose lubricating grease according to environmental conditions. Calcium lubricating grease is not easy to dissolve in water and is suitable for dry and less water environment.Grease is selected according to the operating temperature, the main indicators should be dropping point, oxidation stability and low temperature function.The dropping point can usually be used to evaluate the high temperature function, the actual working temperature of the bearing is 10-20℃ lower than the dropping point.The service temperature of synthetic greases is 20-30°C below the drop point.
Different lubricants must not be mixed with each other.The positions of the oil level plug, oil drain plug and breather are determined by the installation position.
Oil level check:
1. Cut off the power to prevent electric shock.Wait for the reducer to cool down;
2. Remove the oil level plug and check whether the oil is full;
3. Install the oil level plug.
Water check:
1. Cut off the power to prevent electric shock.Wait for the reducer to cool down;
2. Open the oil drain plug and take an oil sample;
3. Check the viscosity index of the oil: if the oil is obviously turbid, it is recommended to replace it as soon as possible;
4. For the reducer with oil level plug: check whether the oil level is qualified; install the oil level plug.
Change oil:
After cooling, the viscosity of the oil increases, making it difficult to drain the oil.The reducer should change the oil at the working temperature.
1. Cut off the power to prevent electric shock.Wait until the reducer cools down and there is no danger of burning;
Note: The reducer should be kept warm during the oil change;
2. Drain the oil under the drain plug;
3. Open the oil level plug, breather and drain plug;
4. Exclude all oil;
5. Install the oil drain plug;
6. Inject new oil of the same brand;
7. The amount of oil should be consistent with the installation position;
8. Check the oil level of the oil level plug;
9. Tighten the oil level plug and breathe.