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Identify the true and false of self-aligning ball bearings through five points

wallpapers Tech 2021-04-07
1. Is the steel stamp clear
Each bearing product will have its brand name, label, etc. printed on the bearing product body. Although the fonts are very small, the products produced by regular manufacturers are printed with steel stamping technology, so although the fonts are small, they are deeply concave and very clear. In general, the fonts of counterfeit products are not only blurred, some can even be easily erased by hand or have serious manual traces.
 
2. Is there any noise
Hold the inner sleeve of the self-aligning ball bearing with your left hand, and turn the outer sleeve with your right hand to make it rotate slightly. Listen for noise during the operation of the bearing. This is the key to judging whether the product comes from a regular manufacturer's brand product that has strict production standards and is operated by a machine.
 
3. Whether there are turbid oil stains on the surface
Whether there are turbid oil stains on the surface, we should pay special attention to it when buying imported bearings. Since there is still a certain gap between domestic anti-rust technology and foreign advanced manufacturing countries, it is easy to leave thick oil marks when anti-rust treatment on the bearing body, which feels sticky and sticky when touched by hand, while foreign original There is almost no trace of anti-rust oil on the imported bearings. According to industry insiders, particularly careful people can smell a special smell on imported bearings, which is the smell of anti-rust oil.
 
4. Is the chamfer uniform
The so-called chamfer of the bearing is the junction of the horizontal plane and the vertical plane. Due to the limitation of production technology, the counterfeit bearing products are not handled satisfactorily at these corners, which we can easily distinguish.
 
5. Bearing packaging
The packaging of self-aligning ball bearings is divided into inner packaging and outer packaging. After the bearing is manufactured and passed the inspection, it will be cleaned and anti-rust treated, and then put into the inner packaging to achieve the purpose of waterproof, moisture-proof, dust-proof, shock-proof, maintain the quality and accuracy of the bearing, and facilitate the use and sale.

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