Bearing cleaning process and key points of operation
- 2025/12/19 14:58:34
In the modern industrial system, the stable operation of mechanical equipment is highly dependent on the working condition of core components. Among them, bearings, as key components supporting rotating parts, their performance directly affects the overall efficiency and operational safety of the machine.
To ensure the long-term efficient operation of the equipment, scientific maintenance of the bearings is particularly crucial. As an important part of maintenance, cleaning directly affects its service life and working reliability.
1. Selection of Cleaning Media
Depending on the type of stain and on-site conditions, different types of cleaning solutions can be selected:
Petroleum-based solvents, such as gasoline and kerosene, are the most widely used cleaning materials. It is required to have a clear and transparent appearance, no pungent smell, no moisture or particulate impurities, and no corrosive effect on metals. Gasoline should have a strong decontamination ability (equivalent to a standard of 120 # or above), while kerosene needs to have a relatively high closed flash point (not lower than 60℃) to ensure operational safety.
Alkaline water-based solution: It is prepared by blending alkaline substances such as sodium hydroxide, sodium carbonate, and sodium phosphate. It is suitable for removing stubborn residues such as heavy oil and carbon deposits, and the proportion can be flexibly adjusted according to the degree of pollution.
Organic chemical solvents, such as chlorofluorocarbons, have a strong dissolving capacity. However, due to their strong volatility, flammability and toxicity, enhanced ventilation and proper personal protection must be ensured during operation.
Specialized industrial cleaning agents: such as the TS-127 type product, with stable composition and highly efficient decontamination, are suitable for batch processing or rapid on-site operations.
2. Standard Cleaning Procedure
Preliminary cleaning: First, use a brush or high-pressure spray to remove large pieces of dirt and floating dust on the outside of the bearing to prevent scratching the raceway surface during the deep cleaning process.
Deep cleaning: Fully immerse the bearing in the cleaning solvent, and slowly manually rotate the inner or outer ring to ensure that the residual oil film and old grease inside are fully dissolved and fall off.
Drying treatment: Use clean compressed air to blow or place it in a well-ventilated environment to air dry naturally to ensure there is no residual moisture inside, preventing subsequent rusting.
Protection and lubrication: After cleaning, new grease or lubricating oil should be applied immediately to prevent the metal surface from being exposed to the air for a long time and oxidizing.
3. Key Operation Reminders
It is prohibited to rotate the bearing at high speed without lubrication to avoid dry friction damage between the rolling elements and the raceways.
When using flammable solvents, it is essential to keep away from fire sources, ensure good ventilation in the operation area, and wear safety equipment such as protective gloves and goggles.
For different types of bearings (such as sealed and unsealed) and their working environments (high temperature, high humidity, dust, etc.), the cleaning methods and reagents should be reasonably selected, taking into account both the cleaning effect and safety.
A scientific and standardized cleaning process can not only significantly extend the service life of bearings, but also effectively reduce the probability of sudden equipment failures, thereby ensuring the continuous and stable operation of the production line.
During the manufacturing, logistics transportation and warehousing of bearings, to prevent oxidation and corrosion on the metal surface, manufacturers usually apply a layer of anti-rust oil film on the surface of open bearings. This oil layer can effectively block air and moisture. However, before installation and use, in most cases, it needs to be thoroughly removed and a lubricant that meets the technical specifications should be refilled. The cleaning step can only be omitted when the equipment manual clearly states that the original anti-rust oil is compatible with the subsequent grease. For bearings that have been put into operation, when replacing the lubricating materials, the old grease and adhering impurities must also be completely removed to avoid affecting the performance of the new lubricating medium.