How to distinguish the quality of bearings

Update:21-07-2020
Summary:

  To identify the quality of equipment bearings, p […]

 

To identify the quality of equipment bearings, proceed from the following aspects:

1. Is the outer packaging clear

Under normal circumstances, the brands produced by regular manufacturers have their own dedicated designers to design external packaging, and arrange for production in factories that pass the production conditions. Therefore, the product packaging should be very clear from lines to color blocks. unambiguous.

2. Is the steel stamp clear

   Each bearing product will have its brand name, label, etc. printed on the bearing product body. Although the font is very small, the products produced by regular manufacturers are printed with steel stamping technology, and the font is pressed before heat treatment. Therefore, although the font is small, it is deeply concave and very clear. Normally, the fonts of counterfeit products are not only blurred. Due to the rough printing technology, the fonts float on the surface, and some of them can even be easily erased by hand or have serious manual traces.

3. Is there any noise

   Hold the inner sleeve of the bearing with your left hand, turn the sleeve with your right hand to make it rotate, and listen for noise during the operation of the bearing. Due to the backward production conditions of most counterfeit products, it is completely manual workshop operation. During the production process, the bearing body will inevitably be mixed with impurities such as dust and sand. Therefore, noise or unsmooth operation will occur when the bearing rotates. . 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 machines.

4. Whether there are turbid oil traces on the surface

   Whether there are turbid oil stains on the surface, this requires us to pay special attention when buying imported bearings. Because the current domestic anti-rust technology still has a certain gap with the foreign advanced manufacturing countries, it is easy to leave thick oil stains when the bearing body is rust-proofed, and it feels sticky and sticky when touched by hands. There is almost no trace of anti-rust oil on the original imported bearings. According to industry insiders, especially careful people can smell a special smell on imported bearings, which is the smell of anti-rust oil.

5. 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 and corners. We can easily distinguish this.