When using the thick in the inlet, if it makes a very harsh sound, it means the sound that is emitted when the metal slides between the metal and the metal. This is the time when there is no influence on the INA bearing, it will not affect the normal operation of the bearing. In this case, how many shapes will be unnecessary wear and reduce the service life of the bearing, then how to solve the cause of the accident to solve the problem will make the bearing no longer emit What is the harsh sound? In the first step, the radial game of the bearing is prone to such a sound when it is very large, and it is easy to appear when it is running fast, and it is easy to appear in winter.
First, the bearings accidentally entered the sand or carbon particles, acids or paint and other debris;
Second, the moisture entering the bearing clearance causes corrosion and corrosion inside the bearing;
Third, the clearance of the imported bearings is too small or too large, resulting in improper selection of bearing size;
Fourth, the choice of lubricating oil or grease is incorrect; oil or grease leaks through the seal;
5. The lubricating oil level is too low, or the seat hole is not twisted straight;
Sixth, the bearing is not matched by the roundness of the flat hole of the seat hole clamp;
7. The unevenness of the horn on the bottom surface of the imported bearing housing causes the seat hole to be deformed, and even the imported bearing housing has cracked dust particles;
8. There are residues, chips and debris in the bearing housing hole;
9. When the sealing ring is eccentric, touching the adjacent components causes friction;
There are several ways to lubricate INA bearings, and each type of bearing and all types of bearings are also different when using lubrication, which is more conducive to maximizing the service life of the bearing and maximizing the performance of the mechanical equipment. status.
1, solid lubrication
Under some special conditions, a small amount of solid lubricant is added to the grease. For example, adding 3~5% of molybdenum disulfide No. 1 can reduce wear and improve the resistance to pressure and heat. For high temperature, elegance, high vacuum and corrosion resistance. Special conditions such as anti-radiation and extremely low temperature, the solid lubricant can be added into engineering plastics or powder metallurgy materials to make bearing parts with self-lubricating properties, such as bonding the solid lubricant to the raceway with an adhesive. A lubricating film is formed on the cage and the rolling elements, which has a certain effect on reducing friction and wear.
2, oil lubrication:
Viscosity is an important characteristic of lubricating oil. The viscosity directly affects the fluidity of lubricating oil and the thickness of oil film formed between friction surfaces. The viscosity of lubricating oil at INA bearing working temperature is generally 12-15cst. The higher the speed, the lower the viscosity, and the heavier the load, the higher the viscosity. Commonly used lubricating oils include mechanical oil, high-speed mechanical oil, turbine oil, compressor oil, transformer oil, cylinder oil, and the like.
Oil lubrication methods include:
a. Oil bath lubrication
Oil bath lubrication is the most common lubrication method. It is suitable for the lubrication of low and medium speed bearings. Part of the bearing is immersed in the groove. The lubricating oil is brought up by the rotating bearing parts and then flows back to the oil groove. The oil level should be slightly lower than the minimum. The center of the rolling element.
b. drip lubrication
Drip lubrication is suitable for bearing parts that need to supply lubricating oil quantitatively. The amount of dripping is generally one drop per 3-8 seconds. Excessive oil quantity will cause the bearing temperature to increase.
c. Circulating oil lubrication
The filtered oil is delivered to the bearing components by an oil pump, and then filtered and cooled by the lubricating oil after the INA bearing. Since the circulating oil can take a certain amount of heat to cool the bearing, this method is suitable for bearing parts with higher rotational speed.
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