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Several Common Questions About SKF Bearings

2020-11-20 09:55


1. Requirements for installation surface and installation site


If there are iron filings, burrs, dust and other foreign objects in the SKF bearing, it will cause the SKF bearing to produce noise and vibration during operation, and even damage the raceways and rolling elements. Therefore, before installing SKF bearings, you must ensure that the installation surface and installation environment are clean.


2. SKF bearings must be cleaned before installation


The surface of SKF bearings is coated with anti-rust oil. You must carefully clean it with clean gasoline or kerosene, and then apply clean, high-quality or high-speed and high-temperature lubricating grease before installation. Cleanliness has a great influence on SKF bearing life and vibration and noise. But we want to remind you in particular: fully enclosed SKF bearings do not need to be cleaned and refueled.

3.The choice of grease


Lubrication has an extremely important impact on the operation and life of SKF bearings. Here is a brief introduction to the general principles of choosing grease. Grease is made of base oil, thickener and additives. The performance of different types and different grades of the same type of grease vary greatly, and the allowable rotation limit is different. Please pay attention to it when choosing. The performance of grease is mainly determined by the base oil. Generally, the base oil with low viscosity is suitable for low temperature and high speed, and the base oil with high viscosity is suitable for high temperature and high load. Thickeners are also related to lubrication performance, and the water resistance of thickeners determines the water resistance of grease. In principle, greases of different brands cannot be mixed, and even greases with the same thickener will have a bad influence on each other due to different additives.


4. The addition of grease


When lubricating, the more grease is applied, the better. This is a common misconception. Excessive grease in SKF bearings and SKF bearing chambers will cause excessive agitation of the grease, resulting in extremely high temperatures. The amount of lubricant filled in SKF bearings should be filled with 1/2 to 1/3 of the internal space of SKF bearings, and should be reduced to 1/3 at high speeds.