Bearing face how directly determines the appearance of his authenticity. Sweden check the original astigmatism lamp should be , bearing appearance. Cracked bearing paired tapered bearing marks and other parts of careful observation . Here to share with everyone one we should check those sections.
Cage riveted or welded quality , position welding is correct , solder joint bearing too large or too small, the main observation rivet head is offset. Skewed. Relaxation . Lack of meat or " double eyelid ', whether welded needle roller bearings strong or welding caused by excessive stuck rolling phenomenon is China Bearing more than a few of our original focus on checking in check *** in addition, such as typing poor quality , defective should be considered , such as illegible . damaged , in addition to the examination of part of the Luoyang Bearing Factory , so the real in appearance but also can be seen , the above is just hoping to help those who are planning to buy *** friend.
Shiny, just like the hand rub can paired angular contact ball bearing fall colors the same. Now the production has a very small box All the letters are arranged densely style box body . There are also fake packaging good . So just from the packaging point of view, but also jeopardy . See the packaging is usually clear or fuzzy , odor and anti-rust oil bearing packaging , as well as processing technology is fine, stenciled lettering is clear, from the material point of view, generally do not see any difference , and some low-quality fake hair black material , but can not be generalized . But now the technology are high imitation goods , and cottage cell phones, even if you know which side to identify, but non-professionals have a few years of Daoxing not see .
Use oil-lubricated bearings *** in addition to the old oil spilled . If you can, should and then poured fresh oil and let the machine at low speed rotation of a few minutes. Residual oil to collect as much as possible contaminants , and then spilled addition to the oil . Note : Before using the best oil first by filtration.
The use of grease -lubricated bearings in the replacement *** grease used in addition to Joe should avoid physical contact with cotton *** bearing angle to any site. Because these residual fibers may be wedged in between the rolling elements and cause damage , especially small bearing applications should pay more attention this issue.
Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Rank higher in turn, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, high-speed rotation and small changes in friction and friction.
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