To identify the quality of equipment bearings, we usually carry out the following aspects
Whether the outer packaging is clear for double-row tapered roller bearings. Under normal circumstances, the brands produced by regular manufacturers have their own special designers to design the outer packaging, and arrange the production facilities to produce and produce. Therefore, the packaging of the products is from the lines. The color blocks should be very clear and unambiguous.
Is the steel print clear?
Each bearing product will be printed with its brand name and label on the bearing product body. Although the font size is very small, the products produced by the regular manufacturers are printed with the stamp printing technology, and the characters are pressed before the heat treatment, so the font is small, but the recess is deep and very clear. Under normal circumstances, the fonts of counterfeit products are not only blurred, because the printing technology is rough, the fonts float on the surface, and some can even be easily erased by hand or the hand marks are serious.
Is there any noise?
Hold the inner sleeve of the bearing with your left hand, and rotate the outer sleeve with a small amount of reciprocating right hand to make it rotate, and listen to whether there is noise in the running of the bearing. Due to the backward production conditions of most counterfeit products, the complete manual workshop operation, in the production process, the bearing body will inevitably be mixed with impurities such as dust and sand, so there will be noise or unsmooth operation when the bearing rotates. . This is the key to judging whether the product comes from a brand-name product of a regular manufacturer that is strict in production standards and operated by machines.
Is there any turbid oil on the surface?
Whether there are turbid oil marks on the surface requires special attention when purchasing imported bearings. Because the domestic anti-rust technology has a certain gap with the foreign advanced manufacturing countries, it is easy to leave a thick oil trace when the bearing body is rust-proof, and it feels sticky and sticky when touched by hands, and foreign original There are almost no traces of rust preventive oil on the imported bearings. According to industry insiders, particularly attentive people can smell a special taste on imported bearings, which is the taste of anti-rust oil.
Whether the chamfer is uniform
The so-called chamfering of the bearing, that is, the intersection of the horizontal and vertical faces, the counterfeit bearing products are not handled satisfactorily in the corners of these corners due to the limitation of production technology, which we can easily distinguish.
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