1.See the bearing appearance, bearing smooth finish, is lower than 8False product, genuine thing type to afraid of wiping with whom laser carve, the false product type has been lost once wiping.
2.The corner of the bearing is black, the water-proof of the genuine thing does not fade. False product see water become dark mud, lose once wiping, use pitch-dark directly.
3.Bearing pack whom major part make the same as true. Need proving according to the experience.
Is the external packing distinct
Generally speaking, all there are one’s own special designers to pack and pay designing to the outside in the straight factory’s brand, arrange for factory that working condition reach a standard go on, produce, produce, pack no matter piece very much clear from lines to color, without hesitation, have special used for protecting one’s own intellectual property right unique design at part fittings to import brand pack.
Is the embossed seal word clear
Will be marked as brand, marked etc. on the body of bearing. The script is very little, but the straight factory produces and mostly uses the technology of the embossed seal, and press words before passing the heat treatment, so though script is little, deeply concave, very clear. And the script of counterfeit products is not only fuzzy, because of printing word technology coarsely, the script floats on the surface, some even can erase with hands easily.
Sound
Left hand hold the intersection of bearing and set under body, right hand stir overcoat make it rotate, listen to their sound. Because the working condition of most counterfeit products lags behind, the workshop-based operation of the complete craft, will unavoidably mix into sand one kind of impurity in process of production, hide in the body of bearing, so will send out and sound when rotating. This is with carrying out and producing standard, and the biggest difference between the straight factory’s brands operated with the machine strictly.
Are there muddy oil stains on the surface
This should be paid special attention to while buying and importing the bearing. Because present China antirusts technology is not to especially get home yet, it is very apt to leave the thick oil stain to antirust to the body of bearing while dealing with, take in viscous on hand, hardly see, antirust trace of the oil at the original packaging bearing that import abroad, the very careful expert says that has a kind of taste to smell to import the bearing, must add the oil of antirusting, can not just see.
Is it even to pour the angle
Pouring the angle of what is called bearing, the only harsh and unreasonable one and vertical junction of one, the counterfeit bearing is because of the limitations of production technology, punish less than satisfactory in these side the intersection of corner and position of horn.
