How to check the product quality of rolling bearings?

In recent years, bearing sales market users often encounter some common quality problems. Most of these problems have been solved by the industry, but a small number of factories have not attracted enough attention, resulting in unqualified product quality. These common quality problems are summarized and improvement measures are put forward to achieve the purpose of improving the quality of rolling bearing products.

(1) outer packaging inspection: under normal circumstances, the factory brand has its own special designers for external packaging design, and arrange the production conditions pass the factory production, therefore, the packaging whether from the line to the color block is very clear.

(2) Steel printing inspection: Usually, brand words and labels are printed on the bearing body, and the font is very small. But the factory produces most of the use of steel printing technology, and before overheating processing on the word, so although the font is small, but concave deep, very clear. And the typeface of the counterfeit product is not only fuzzy, and the printing technology is rough, the typeface is floating on the surface, and even can be easily wiped off by hand.

(3) Rotation check: hold the inner sleeve of the bearing with the left hand, rotate the jacket with the right hand, and listen to whether there is noise. Because most of the production conditions of counterfeit products are backward, and even complete manual workshop operation, in the production process will inevitably be mixed with sand and a kind of debris hidden in the bearing body, so when rotating will emit noise. This is the biggest difference between the brand and the factory, which strictly implements production standards and operates by machine.

(4) Surface quality inspection: Due to the current domestic antirust technology is not particularly pass, so the antirust processing was carried out on the bearing body and is easy to leave a thick oil stains, glue holding the thick thick, and imported from abroad can hardly see the trace of rust-proof oil bearing, special care experts say imported bearing smell a smell, rust-proof oil is certainly exist, just can't see.