How to identify the cooling of the cooling fan bearing quality
Radiator cooling fan bearing quality should be from the several aspects: 1. The outer packing is clear: double row circular cone roller bearings in general, normal manufacturer production of brand has its own professional design external packaging design, and arrange production with the conditions of the factory production, therefore, the packing of the product no matter from lines and colors should be very clear, unambiguous. 2. Seal character is clear: every product bearing on bearing products body printed with the brand, label, etc. Although the font is very small, but normal manufacturer production printing products are adopted the steel seal technology, and before without overheating treatment of words, so the font although small, but deep concave, very clear. And usually, counterfeit products of font instead of fuzzy, because of printing technology coarse, font float to the surface, some very easily to trace can be erased by hand or manually. 3. Whether there are miscellaneous ring: the bearing body with his left hand, right hand small reciprocating toggle coat to make it spin, bearing ring if there is a noise in the process of operation. Due to the backward production conditions most of the counterfeit products, grass, tsuen wan, the manual mill bearing the body in the process of production inevitably mixed into impurities, dust, sand and so on bearing rotation will be mixed ring or not smooth phenomenon. This is to determine whether a product from the production standard strictly, and grass with machines in normal manufacturer brand product key. 4. If there is a muddy surface oil stains on the surface of whether there is oil stains the turbid, we need to should pay special attention to when to buy imported bearings. Due to domestic antirust technology, there is still a gap with foreign advanced manufacturing countries, therefore the antirust processing was carried out on the bearing body and is easy to leave a thick oil stains, contact with the hand feeling sticky thick, and imported from abroad can hardly see the trace of anti-rust oil on the bearing. According to the personage inside course of study introduces, particularly careful people can smell a special kind of imported bearing, this is the flavor of the anti-rust oil. 5. Chamfer whether even so-called bearing chamfer, namely horizontal plane and vertical plane junction, fake bearing products because of the limitation of production technology in the area of the fringes is handled in guanzhou, as we can easily identify. 6. Bearing packing packing part and outer bearing in manufacturing finished and after inspection, cleaning and antirust processing, then put into the inner packing, in order to achieve the waterproof, moisture-proof, dustproof, shock, maintenance quality and precision of the bearing and the purpose of convenient use and sell. Bearing the inner packing by antirust period is divided into three categories: (1) short rustproof packaging: antirust period 3 ~ 6 months, suitable for bulk shipments to the same subscriber, bearing will be put into use in the short term. By mutual agreement, with easy to use for the principle, the simple packaging. (2) general antirust packing: antirust period for one year, suitable for general purpose bearings. The long antirust period: rust period of two years, is applicable to special and precision bearing. Bearing the inner packing material with polyethylene plastic tube ( Box) Polyethylene composite paper, kraft paper, plain and furrow, carton, PE or the PE plastic film, nylon fastening belt or woven plastic fastening belt, waterproof high strength plastic belt, sack, etc. The above materials are need to ensure that material corrosion resistance test.