On the wear of plastic plain bearings
Plastic bearings plastic bearings wear resistance depends on the wear resistance of the material itself， but the plastic sliding bearing wear is closely related to the following factors: the shaft material， hardness， roughness， bearing running speed， load and ambient temperature ， humidity， etc。； as plastic sliding bearings manufacturers， is constantly optimize the wear resistance of the plastic bearing material and to provide users with the correct selection guidance； and as a user to follow the manufacture of plastic bearings Product manual on the selection of plastic sliding bearings and assembly instructions。
Any bearing the most critical moment is start-up phase。 At this point， the lubricant film is not yet bearing to work， this is the most common situation。 As long as the work load bearing one in the bearing will produce minor wear。 In the startup phase， minor wear more fully， they will wear with these small particles fill the outer surface of the shaftslide bearing ， so when working with low wear and tear can generate optimal lubricating film。 Starts， minor wear down quickly， these changes had little impact on the size。 After start-up phase of continuous work， the wear rate is small and stable。
Any type of plastic plain bearings is matched with the best working conditions are like the best with the shaft material， roughness； best work pressure， speed， temperature， etc。； for CSB-EP series best plastic plain bearings with hard chrome plated shaft material surface； roughness on the CSB for each type of plastic plain bearings on the shaft surface roughness requirements are not the same， we can see that CSB plastic plain bearings on the shaft of the roughness to the Ra1 from Ra0。1 。6； while the CSB-EP5 plastic plain bearings for the best temperature is not at room temperature， EP5 160 ℃ in temperature friction and wear when shown the best performance。
Laboratory continues to CSB's imitation of a variety of operating conditions of the test study found that the plastic sliding bearing wear occurs in the form of the work are the following:
Normal wear and tear - in conjunction with the bearing in the correct place under conditions of wear and tear； this time bearing wear mainly work in the initial stages of the lubrication of the bearing material surface to the shaft， the result of the transfer， when the deputy after the establishment of the ideal bearing lubrication The wear rate slowly decreased。
Crawl wear - As the shaft surface roughness caused by the friction surface is too smooth crawling； shaft surface is too smooth， lubricating plastic plain bearings in the fill material can not be transferred to the shaft surface to form pits in the lubricating film， making the ideal friction can not be established； this bearing friction coefficient increased when the required driving force is increased；
Furrow wear - As the shaft is too rough cause friction surface scratching furrows phenomenon； shaft surface height difference is too large， the transfer from the bearing surface to the formation of a solid lubricating material can not be the ideal smooth surface friction； substance of wear occurs at this time is the scratch of wear and tear；
Glue wear - because beyond the safe operation of the bearing axis due to temperature or glue； optical axis in the bearing operating temperature exceeds the temperature to allow the safe operation of the adsorption has taken place in the local softening of the bearing surface formed by friction wear。
Burns wear - due to run too fast burns caused by the friction surface wear； shaft bearings run faster than the speed allowed by the friction surface will cause friction because the friction heat from a sharp rise in raw， dramatic increase in the frictional heat of friction surface resulted in a quick burn。
Of course Suliao bearing wear is unavoidable phenomenon occurs， the plastic sliding bearing performance have been identified， we can only follow as far as possible using each of the different types of bearing rule， the plastic sliding bearings to minimize wear and tear， which the performance of the plastic bearing to play the best。
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