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How to judge the quality of imported bearings

How to judge the quality of imported bearings


Is the outer packaging of imported bearings clear?

    Under normal circumstances, the imported bearings of the original brand have their own special designers to design the external packaging, and arrange the production of factories with qualified production conditions, so the packaging is very clear from lines to color blocks, unambiguous, partly There are also unique designs on the accessories packaging of imported brands to protect their intellectual property rights.

    Are the steel stamps on imported bearings clear?

    Brand words, labels, etc. will be printed on the imported bearing body. The font is very small, but most of the products produced by the original factory use steel printing technology, and the characters are embossed before heat treatment, so although the font is small, it is deeply concave and very clear. The fonts of counterfeit products are not only blurry, but due to the rough printing technique, the fonts float on the surface, and some can even be easily erased by hand.

Is there any noise in the bearing body of imported bearings?

    Hold the inner sleeve of the imported bearing with your left hand, and turn the sleeve with your right hand to make it rotate, and listen for any noise. Due to the backward production conditions of most counterfeit products, it is completely manual workshop operation, and impurities such as sand will inevitably be mixed into the bearing body during the production process, so there will be noise when rotating. This is the biggest difference from genuine factory brands that strictly enforce production standards and operate with machines.

    Is there any cloudy oil stain on the surface of imported bearings?

    This should be paid special attention to when purchasing imported bearings. Since the current anti-rust technology in China is not particularly good, it is easy to leave thick oil stains when anti-rust treatment is carried out on the bearing body, which is sticky and sticky in the hand, but it is almost invisible on the bearings imported from abroad. Seeing the traces of anti-rust oil, a very careful expert said that the imported bearings smelled a certain smell, and it must be anti-rust oil, but they couldn't see it.

Is the chamfer of imported bearings uniform?

    The so-called chamfering of imported bearings is the intersection of horizontal and vertical surfaces. Due to the limitation of production technology, the counterfeit imported bearings are not handled satisfactorily at these corners.

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