Method for identifying the quality of bearing grease

Bearing grease mainly plays the role of lubrication and sealing. It has a great help to the bearing working ability. Of course, when we buy bearing grease, if we buy inferior products, we can not only lubricate the bearing, even the bearing. Caused a certain amount of damage, so many people would like to know the simple method of identifying the bearing grease quickly, to share with you the following simple methods, I hope to help everyone.

Look at the appearance: the appearance of the grease, no matter what color, the fat body should be a uniform thick paste. If you open the package, you can see that there is oil on the surface, the surface of the fat is different in color or the skin is hardened, or the consistency is obviously small, or The surface of the grease is mixed with water to emulsify and whiten, or the surface of the grease is not sealed to cause a qualitative change. These fats are not available. The same quality grease, the larger the volume, the better the quality.

Smell the taste, feel the test: If there is some strange smell when opening the package, then we have to consider whether the bearing grease has expired. In addition, according to China Bearing Network reminds everyone, generally good bearing grease is pinched up by hand, there will be no feeling of cleverness, but it will be smoother. This is the feeling caused by the addition of additives.

Burning with fire: If the quality of the bearing grease is not squeaky in the case of fire, there is no particularly unpleasant smell, of course, it will smoke, but the color of the smoke is not Black. As the area of black smoke burning will become smaller and smaller, some auxiliary tools can be used to remove a little of the bearing grease and ignite it with fire. If the grease drops down, the grease drops are low, and the dropping point is high. There is also the amount of residue after burning to see the quality of the grease. Since the lithium-based grease has a high dropping point, the grease cannot be used with fire.

It is suggested that when purchasing bearing grease, we must not only understand its identification method, but also make targeted selection according to requirements. We can choose from these aspects.

1. What is the anti-rust performance? Since it is the grease used on the bearing, it needs to have certain anti-rust performance, which can help the bearing to complete the anti-rust work, and the anti-rust agent is insoluble in water, so when selecting To determine whether the grease has good adhesion, can form a layer of oil film.

2. How stable is it. The problem of stability is the main performance that directly affects whether the bearing can operate normally and whether it can function normally. Generally, in normal operation, the grease will reach the inside of the bearing through the bearing housing. If the stability cannot be guaranteed, the structure of the grease will collapse and the grease will be destroyed during operation, thus ensuring lubrication and prevention. The performance of rust will also affect the normal operation of the equipment.

3. Temperature and working conditions used. At present, there are many kinds of bearing greases in which the greases need to be used at different temperatures. Therefore, when selecting, it is necessary to consider low-temperature grease or high-temperature grease.

Good bearing grease, not only must choose the right, but also according to the specific reasons we need to buy, so the lubrication effect of the bearing will be better.