The SKF bearing surface, the appearance of SKF directly determines his authenticity. The original Swedish SKF inspection should be carried out under the astigmatism lamp, and carefully observe the bearing's appearance, cracked bearing marks and other parts. Let's share with you the parts we should check.
All kinds of mechanical scars, scratches, crushing, bumps, etc., causing eccentric load and stress concentration, will cause poor installation, such as spherical roller bearings, such as wear, resulting in rotation accuracy and service life.
Peeling and folding, and there are often different types of decarburization or carbon depletion around the material, the material is easy to collapse. The concave or the wear, the two defects are not well combined with the tapered roller bearing base metal, and the life and The accuracy is very unfavorable.
Various cracks will become the stress concentration source and the bearing net will expand rapidly, such as raw material cracks. These cracks will cause bearing cracking, forging cracked cylindrical roller bearing pattern, heat treatment crack and grinding crack, etc. Bearing life and work safety have a great impact. In fact, for the important Wafangdian bearing plant use, the bearing factory has conducted 100% magnetic or radiographic inspection of its components.
The riveting or welding quality of the cage, whether the welding position is correct, whether the joint of the welding joint is too large or too small, mainly observe whether the rivet head is biased. Skewed. Relaxed. Missing meat or "double eyelids", whether there is welding needle bearing Insufficient or excessive welding caused the phenomenon of jamming of the rolling element. The above items are the parts of the Chinese bearing net that we checked in the original SKF. In addition, if the typing quality is not good, it should be considered as defective, such as the writing is blurred. Damage, except Except for some of the above-mentioned inspections in Luoyang Bearing Factory, serious cases may not be accepted.
Corrosion. Black skin and pockmark, the latter two are defects that are easy to store moisture and dirt in Harbin Bearing Factory, and are most likely to develop into rust. Corrosion is a result of poor installation. The source of early wear and fatigue is full of roller bearings, and severe rust can be scrapped.
So the real SKF can also be seen in appearance, just hope to help those who are planning to buy SKF.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
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