Quality distinction
Distinguish the quality of equipment bearings, we usually from the following aspects:
1, the packaging is not clear
Double row tapered roller bearings
Under
normal circumstances, the norms of the manufacturers have their own
brand of sliding bearings from a special planning staff to plan for
external packaging, and the production conditions of the factory to
produce production, therefore, the packaging of goods from the line to
the color should be very Clear, unambiguous
2, steel printing is not clear
Each
bearing the goods will be printed on the bearing body of the brand
printed with its brand name, the standard composite bearing number. Although
the font is very small, but regulate the manufacturers of goods
produced by the use of steel printing technology printing, and without
heat treatment before the pressure word, so its font despite the small,
but concave deep, very clear. And usually, counterfeit goods font is not only vague, because the
printing skills rough, the font floating in appearance, and some can
easily be wiped out by hand may be traces of grim.
3, is there a noise
Left
hand to seize the bearing body sleeve, the right hand small range of
reciprocating tossing the jacket to rotate, listen to the bearing during
the operation is not a noise. Because most of the counterfeit goods produced
Behind
the complete operation of the workshop, in the production process will
inevitably be incorporated into the body of dust, sand, a class of
impurities, so when the rotation of the bearing will appear when the
noise may not run smoothly. This is the judge
Whether the product comes from strict production regulations, and it
is essential to use the machine to regulate the brand name of the
manufacturer.
4, appearance
Appearance is not a dirty oil trace this demand we purchase bearings should pay special attention. Because the domestic anti-rust skills and foreign leading production countries there must be poor
Distance,
and therefore on the bearing body rust treatment is easy to leave a
thick oil traces, touch the sticky feel when the touch, and foreign
imports of imported bearings simply do not see any trace of anti-rust
oil. According to industry insiders,
Especially careful in the imported bearings can smell a special taste, which is the taste of anti-rust oil.
5, chamfer is not uniform
The so-called bearing chamfer, that is, the intersection of the
horizontal and vertical, counterfeit bearing goods because of the
production skills of the constraints, in these corner of the corner of
the disposal of unsatisfactory, which we can easily distinguish.
6, packaging
Bearing packaging sub-packaging and packaging
After
the production of the bearing and after passing the inspection, that
is, clean and rust treatment, and then into the packaging to reach the
waterproof, moisture, dust, anti-shock, to protect the quality and
accuracy of bearings and easy to use and sell the intention The
Bearing within the package by rust-proof period is divided into three categories:
①
short rust-proof packaging: rust-proof period of 3 to 6 months, for
large quantities shipped to the same subscriber, will be put into use in
the short term bearings. By the agreement between the two sides to facilitate the use of the principle of using simple packaging.
② usually rust-proof packaging: rust-proof period of one year, for the commonly used bearings.
③ long rust-proof packaging: rust-proof period of two years, for special and fine bearings.
The
packing material is made of polyethylene plastic box (box), kraft
paper, plain weave and wrinkled polyethylene composite paper, carton,
polyethylene or polyethylene plastic film, nylon fastening tape or
plastic fastening belt, waterproof high strength plastic belt , Linen bags and so on. The above information must ensure that the corrosion resistance of the data test qualified.
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- ADD: No.503,Hunan International Commerce Center, Jintai Square,Changsha 410001,Hunan
- TEL: 86-731-84770165
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- E-mail: sales2@slide-bearing.com
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