It must be resistant to elevated temperatures, aging, and also have sealing properties. Sealed bearing housings are not maintained absolutely. From the factory they laid long-lasting lubrication. It looks different in the case of open bearings. Workshops must use the correct lubricant, grease lubrication as divisive. Usually, car manufacturers do require some lubrication to use. Manufacturers such as SKF bearings and FAG provide their own lubrication for bearings. If you are thinking of buying a universal lubricant through wholesale trade, we must remember that it is a lubricant for ball bearings.
It should be make sure that it contains all the necessary additives and meet minimum requirements for viscosity and temperature stability. (Temperature from -30 to 140 gr. Celsius). Practical advice. Stupichnye bearings should be checked every time the diagnosis, regardless of whether it is provided by the manufacturer at the maintenance interval. The time spent is not so great: check backlash, and the rotation of the wheels at a trial or test drive to listen to outsiders metallic noise. A diagonal ball bearings should not have any backlash.
In the case of small konicheskogorolikovogo bearing play, even necessary. For many wheel bearing replacement station was only a routine exercise. But at this ruin should not forget the vehicle manufacturer's recommendations. There are some universal ground rules for Professional repair: monitor the cleanliness, the ability to change the bearings on all axes, with the use of the full-quality repair kit. When removing not damage the seat bearing in installation does not distort the bearing and retaining ring.