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Precision plastic bearings

  *POM Engineering plastics elucidation
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      _金沙js99011.comPOM Polyoxymethylene can be used in tem-peratures ranging from -60℃to +100℃. The high surface strength is only surpassed by a few materials. POM shows good sliding roperties and high resistance to wear and tear because of the high strength and smooth surface. There is a very low risk of stress cracks. POM (Copolymere) exhibits a high thermal stability and a high resistance to chemicals (high resistance to hydrolysis).
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Advantages :
·high strength
·high rigidity
·high thermal stability
·good electrical insulation properties
·very good sliding properties
·high resistance to solvents
·very high resistance to stress cracks
·高抗张裂机能
·UV-resistant (only black)


Disadvantages :
· not resistant to  high-concentrated  acids
· difficult to glue and  paint

Applications :

Bearings, gear wheels, parts for pumps, screws, ornamental mountings and fittings, parts for the textile industry.


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金沙js99011.com Plastics Insert bearings table size
Plastics Thrust ball bearings table size Plastics Angular contact ball bearings table size
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  *PEEK Engineering plastics elucidation
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PEEK Polyether etherketone can be used at very high temperatures (+260℃) and it shows an extraordinary mechanical strength, toughness, hardness, flexural strength, torsional strength, PEEK exhibits excellent chemical resistance, very good dielectric properties up to +260℃ and a very good resistance to all kinds of radiation. Lmportantl it is self-extinguishing according to UL 94.
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Advantages :
·very high mechanical strength
·very high rigidity
·very high thermal stability
·very high dimensional stability
·very high radiation resistance
·very high hydrolysis resistance
·极高的抗伦琴射线及红外线的才能
·下抗水解才能(18大气压,280℃)

  Disadvantages :

·notched impact  strength relatively  low
· low resistance to  acetone

Application :

Bearing shells, piston rings, valve seats, gears, seals, aviation, pump vanes, plug connectors, wafer carriers.

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