What role does lubricating oil play in bearing maintenance? And what is its connection with bearing maintenance? First, from the perspective of operating speed: the higher the bearing operating speed, the easier it is to form an oil wedge, and a low-viscosity lubricating oil can be selected at this time to ensure the presence of an oil film; if the lubricating oil has excessively high viscosity, it will generate large resistance, leading to increased heat generation and overhigh temperature. When the bearing operates at a low speed, the load needs to be borne by the viscosity of the oil, so a lubricating oil with high viscosity should be selected.

The "Eight Fixed Principles" and "Three Filtration Processes" in equipment lubrication work are effective methods to standardize daily lubrication technical management and ensure a good lubrication state of equipment.

The specific contents are as follows, starting with the "Eight Fixed Principles":

1. Appoint personnel: Clarify the responsibilities of the working staff. The lubrication operators shall divide the work of oil filling, oil injection, cleaning and oil change for each lubrication part of the equipment, perform their respective duties, and jointly complete the lubrication task of the equipment.

2. Match with fixed load: Generally, the larger the bearing load, the higher the viscosity of the selected lubricating oil shall be; for low-speed and heavy-load working conditions, the load-carrying capacity of the oil shall be a key consideration.

3. Match with fixed operating temperature: If the working environment has a large temperature difference, a lubricating oil with a high viscosity index should be selected; when working in a high-temperature environment, a lubricating oil with high viscosity, high flash point, good oiliness, strong oxidation stability and corresponding additives shall be selected; when the working temperature is not high, a low-temperature resistant lubricating oil with low viscosity, low water content and low freezing point should be selected.

4. Fixed point: Determine the lubrication parts and lubrication points of each piece of equipment, and implement fixed-point oil supply.

5. Qualitative determination: Clarify the type, grade and quality requirements of lubricating oil required for each lubrication part of the equipment, and the oil quality must pass the inspection.

6. Quantitative: Determine the oil filling amount and oil change amount for each oil supply part each time, and implement quota management of oil consumption and quantitative oil change.

7. Regular: Determine the oil filling cycle and oil change cycle for each lubrication part, and strictly perform oil filling, cleaning and oil change operations in accordance with the specified cycle; for oil tanks with a large oil storage capacity, regular sampling and testing shall be conducted as required to determine the time and content of the next maintenance.

8. Match with fixed working environment: In an environment with water and steam, attention shall be paid to selecting oil products with strong demulsibility, oiliness and rust resistance; in a dusty environment, attention shall be paid to dustproof sealing; if there is corrosive gas in the environment, oil products with good corrosion resistance should be selected.