Hardware accessories common sense: how to distinguish the authenticity of the bearing
1. Look at the bearing appearance, bearing finish, below (8) is a fake, the real model is not afraid of rubbing with a laser engraved, the fake model is wiped off. Sea Valve,Sea Water Gate Valve,Marine Sea Valve,Steel Right Angle Sea Valve Jiangsu Hida Marine Valve Co., Ltd , https://www.haidavalve.com
2. The bearing corner is black, the real product is not afraid of water and does not fade. Fake the product into black mud, or wipe it off, or use black paint directly.
3. Most of the bearing packaging is done the same. Need to be verified by experience.
Whether the outer packaging is clear
Under normal circumstances, the factory brand has its own special designer to design the external packaging, and arrange the production conditions of the factory to produce and produce, so the packaging is very clear from the line to the color block, unambiguous, some imported brands There is also a unique design on the accessory package to protect your intellectual property.
Is the steel print clear?
Brand letters, labels, etc. will be printed on the bearing body. The font is very small, but most of the products produced by the factory use the stencil technology, and the type is pressed before the heat treatment, so the font is small, but the recess is deep and very clear. The fonts of counterfeit products are not only blurred, but because of the rough printing technology, the fonts float on the surface, and some can even be erased by hand.
Is there any noise?
Hold the inner sleeve of the bearing with your left hand, and turn the outer sleeve with your right hand to make it rotate to hear if it has noise. Since most of the counterfeit products are out of production conditions and completely hand-worked, it is inevitable that impurities such as sand will be incorporated into the bearing body during the production process, so that noise will be generated when rotating. This is the biggest difference between a factory brand that strictly enforces production standards and operates with machines.
Is there any turbid oil on the surface?
This should be especially noted when purchasing imported bearings. Since the current domestic anti-rust technology is not particularly good at home, it is easy to leave a thick oil trace when the bearing body is rust-proofed, and it is sticky and sticky on the hand, and the bearings imported from abroad are almost invisible. To the traces of anti-rust oil, it is particularly careful that the imported bearings smell a smell, and it is definitely anti-rust oil, just can't see it.
Whether the chamfer is uniform
The so-called chamfering of the bearing, that is, the intersection of the horizontal surface and the vertical surface, the counterfeit bearing is unsatisfactory in the processing of these corners due to the limitation of production technology.
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