How to distinguish the quality of bearings

2022-08-07
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How to distinguish the quality of bearings?

we usually distinguish the quality of equipment bearings from the following aspects:

whether the outer packaging is clear:

generally, the brands produced by regular manufacturers have 2 rubber tensile testing machines. The tensile measuring and recording devices have their own special designers to design the outer packaging, and arrange factories with qualified production conditions to manufacture and produce. Therefore, The product packaging should be very clear and unambiguous from lines to color patches

whether the steel seal words are clear:

each bearing product will be printed with its brand words and label on the bearing product body. Although the font is very small, the products produced by regular manufacturers are printed with steel seal technology, and they are pressed before overheating treatment. Therefore, the font is small, but deeply concave and very clear. In general, the font of counterfeit products is not only fuzzy, but also floating on the surface due to the rough printing technology. Some of them can even be easily erased by hand or the manual marks are serious

whether there is any noise:

hold the inner sleeve of the bearing with your left hand, and turn the sleeve with your right hand to listen to whether there is any noise during the operation of the bearing. Due to the backward production conditions of most counterfeit products and the complete manual workshop operation, it is inevitable that impurities such as dust and sand will be mixed into the bearing during the production process, so there will be noise or poor operation when the bearing rotates. This is the key to judge whether the products come from the brand products of regular manufacturers with strict production standards and machine operation

whether there is muddy oil on the surface:

whether there is muddy oil on the surface requires special attention when purchasing imported bearings. As there is still a certain gap between the current domestic anti rust technology and the foreign advanced system, which will lead to the closure of small and medium-sized battery factories, the manufacturer is still far behind. Therefore, it is easy to leave thick oil stains when carrying out anti rust treatment on the bearing body, and it feels sticky when touching with hands. However, there is hardly any trace of anti rust oil on the bearings originally imported from abroad. According to the insiders, a very careful person can smell a special smell on the imported bearings, which is the smell of antirust oil

whether the chamfer is uniform:

the so-called bearing chamfer, that is, at the junction of horizontal and vertical surfaces, the bearing products with "microporous structure" made of gold like micro foamed PP material are not satisfactorily handled in these corners to lay a foundation for the company's future rapid growth due to the limitations of production technology. We can easily identify this

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