Solid lubrication In some special application conditions, a small amount of solid lubricant is added to the grease. For example, three to five percent of molybdenum disulfide No. 1 can reduce wear and advance compressive and heat-resistant capabilities. Under special conditions such as vacuum, corrosion resistance, radiation resistance, and extremely low temperature, solid lubricants can be used in engineering plastics or powder metallurgy materials to make bearing parts with self-lubricating functions. For example, solid lubricants can be glued with adhesives It is knotted on the raceway, cage and rolling body to form a lubricating film, which has a certain effect on reducing conflict and wear.

Oil lubrication: Viscosity is an important characteristic of lubricating oil. The viscosity directly affects the fluidity of the lubricating oil and the thickness of the oil film formed between the contact surfaces. The viscosity of the lubricating oil at the working temperature of the second-class bearing is generally 12-15cst. The higher the speed, the lower the viscosity, the heavier the load, the higher the viscosity. Commonly used lubricating oils include mechanical oil, high-speed mechanical oil, turbine oil, compression oil, transformer oil, cylinder oil, etc.

Oil lubrication methods include: drip lubrication. The drip lubrication is suitable for the second-class bearing components that require a quantitative supply of lubricating oil. The amount of dripping oil is generally one drop every 3-8 seconds. Too much oil will cause the bearing temperature to increase. For spray lubrication, monotonous compressed air is mixed with lubricating oil through the sprayer to form oil mist. In the spray bearing, the airflow can effectively cool the bearing and prevent the intrusion of impurities. This method is suitable for the lubrication of high-speed and high-temperature bearing components.

Oil bath lubricating oil bath lubrication is a general lubrication method, suitable for the lubrication of low and medium speed bearings. Part of the bearing is immersed in the groove, and the lubricating oil is carried by the rotating bearing parts, and then flows back to the oil groove. The oil level should be slightly lower. In the center of the lower tumbling body. Circulating oil lubrication uses an oil pump to deliver the filtered oil to the bearing components, and the lubricating oil after passing through the bearing is filtered and cooled for use. Because circulating oil can take away a certain amount of heat and cool the bearing, this method is suitable for bearing parts with higher speeds.

The oil pump for jet lubrication injects high-pressure oil into the bearing through a nozzle, and the oil injected into the bearing flows into the oil groove through the other end of the bearing. When the second-class bearing rotates at high speed, the tumbling body and the cage also make the surrounding air form an airflow at a properly high rotation speed. It is difficult to send the lubricating oil to the bearing with general lubrication methods. At this time, high-pressure injection must be used to lubricate When the oil is sprayed into the bearing, the orientation of the nozzle should be placed between the inner ring and the center of the cage.