How to judge the quality of bearings by appearance
Release time:
2023-09-04
How to judge the quality of bearings by appearance
Bearings not only in a variety of mechanical equipment has a wide range of use, the effectiveness of the vehicle wheel is also very large, the key or so that it can be all normal operation, so how to distinguish the quality of the bearing from the appearance of the merits of it:
(1) a variety of cracks, such as raw material cracks, cracks, heat treatment process cracks and cutting cracks, such cracks in the whole process of the operation of the bearing, will become a source of stress and rapid expansion, resulting in bearing cracking, the bearing service life and work safety factor of great harm. How to distinguish the quality of the bearing according to the appearance
(2) A variety of mechanical equipment scars, such as wear, scratches, squeeze, bumps, etc., will lead to poor bearing installation, resulting in wheel weight and stress, resulting in lower rotation accuracy and service life.
(3) rust, black skin and black spots, the latter two are very easy to store water and waste shortcomings, the most easy to develop into rust. The corrosion is caused by poor installation, initial damage and fatigue of pollutants, more serious corrosion will make the bearing damage.
(4) peeling and stretching, the two shortcomings of the part and the base metal material fusion is not stable, and its periphery is usually not the same level of carburization or carbon depletion, raw materials are very easy to collapse, depression or wear, the bearing service life and accuracy is very bad.
(5) For the riveting or electric welding quality of ball bearings, the key is to check whether the bolt head is deviated, inclined, loose, lack of meat or "double eyelid", whether the electric welding part is appropriate, whether the spot welding is too large or too small, whether the electric welding is not firm or whether the electric welding is welding
Distinguish the quality of the bearing from the good and bad, from the appearance of whether there are cracks, black spots or peeling and expansion and other conditions, if the turnover body can not be ball bearings and can rotate easily, it will lead to bearing noise and rotation accuracy reduction, more serious words and even lead to equipment failure.
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