Testing the deterioration of FAG bearing grease

Grease is very critical in the use of FAG bearings. If a deteriorated grease is used, it will not only function as it should, but it will also damage the FAG bearing.

1 Oil flow observation method

Take two measuring cups, one of which is filled with the lubricating oil to be inspected, the other is placed on the table, and the measuring cup filled with lubricating oil is lifted off the table 30-40 cm and tilted to allow the lubricating oil to slowly flow to the empty cup. In the middle, observe the flow, the quality of the lubricating oil flow should be slender, even, continuous, if the oil flow suddenly and slowly, and sometimes there is a large flow, then the lubricant has deteriorated.

2 manual method

The lubricant is rubbed repeatedly between the thumb and the index finger. The better lubricant feels lubricated, less wear debris, and no friction. If you feel a large friction between the fingers, it means lubricating oil. There are many impurities inside, can not be reused, should be replaced with new lubricants.

3 lighting method

On a clear day, use a screwdriver to pry the lubricant at a 45-degree angle to the horizontal. Observe the sunlight and observe the oil droplets. Under the light, it can be clearly seen that there is no wear debris in the lubricating oil, which can continue to work. If the grinding debris is too much, the lubricating oil should be replaced.

4 oil drop trace method

Take a clean white test paper, drop a few drops of oil on the test paper. After the lubricating oil leaks, if there is black powder on the surface, touch the hand with a feeling of resistance, it means that there are many impurities in the lubricating oil, good lubricating oil. No powder, it is dry and smooth by hand, and it has yellow marks.

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Causes and treatment of overheating of motor IKO bearings

1. IKO bearing is damaged. Should be replaced.

2. Rolling IKO bearing grease is too little, too much or there are impurities such as iron filings. The capacity of IKO bearing grease should not exceed 70% of the total volume. Those with impurities should be replaced.

3. The shaft and IKO bearing are too tight or too loose. When it is too tight, it should be reground. If it is too loose, it should be set to the shaft.

4. IKO bearing and end cap are too tight or too loose. The IKO bearing chamber is machined when it is too tight, and the steel sleeve is placed inside the end cover when it is too loose.

5. Poor assembly of the motor end caps or IKO bearing caps. Install or flatten the end cap or IKO bearing cap stop and tighten the screws.

6. The belt is too tight or the coupling is poorly assembled. Adjust the belt tension and correct the coupling.

7. Sliding IKO bearing lubricant is too little, there are impurities or oil ring stuck. Refuel, replace, repair or replace the oil ring.

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