The sealing of the automobile bearing is to keep the bearing in good lubrication condition and normal working environment, fully exert the working performance of the bearing and prolong the service life. The rolling bearing must have a proper seal to prevent leakage of lubricant and dust, moisture or Intrusion of other dirt. Bearing seals can be divided into self-contained seals and external seals. The so-called bearing self-contained seal is to manufacture the bearing itself into a device with sealing performance. Such as bearings with dust cover, sealing ring and so on. The sealing space is small, the installation and disassembly are convenient, and the cost is relatively low.

The so-called bearing-incorporated sealing performance device is a sealing device having various properties manufactured inside a mounting end cap or the like.

The choice of bearing seals should consider the following main factors:

Bearing lubricant and type (grease and lubricating oil); bearing working environment, space occupation; shaft support structure advantages, allow angular deviation; circumferential speed of sealing surface; bearing operating temperature; manufacturing cost.

The vehicle should work within the rated load range. If the overload is severe, the bearing will be overloaded directly, which will cause early failure of the bearing, and more serious will cause vehicle failure and personal safety accidents;

The bearing is prohibited from being subjected to abnormal impact loads;

Regularly check the state of use of the bearing, pay attention to observe whether there is abnormal noise and partial sharp temperature rise in the bearing part;

Regular or quantitative filling of lubricating oil or grease as required;

According to the condition of the vehicle, the lubricant should be completely replaced at least every six months, and the bearings should be inspected carefully;

Inspection under bearing maintenance condition: Clean the bearing under detachment with kerosene or gasoline, carefully observe whether there is sliding or creeping of the inner and outer cylindrical surfaces of the bearing, whether the inner and outer raceway surfaces of the bearing are peeling or pitting, rolling elements and holding Whether the frame is worn or deformed, etc., according to the comprehensive condition of the bearing inspection, determine whether the bearing can continue to use