Kestoil® is a self-lubricated, strong,
wear resistant engineering plastic with a low coefficient of friction.
Implicit in its nature, it has many properties that no other
material has in combination. It is ideal for bearings without
lubrication and for guides.
Lubricants and impact
and wear resistance increasing additives are added during production
to turn Kestamid®
into Kestoi®.
Integrated into the material, lubricant additives become inseparable and homogenous components.
Additives do not leak out even in heaviest operating conditions.
Material quality and mechanical machining performance remain
unaffected. No oily sensation is felt by touching the
surface because additives are spread evenly inside
the material.
As bearing material, Kestoil® has a wear resistance 5-7 times
the standard cast polyamide. This considerable result comes from the fact that the self-lubricating characteristic of
the material keeps the coefficient of friction low during
operation and thus prevents formation of heat between components that
rub against each other. In the absence of self-lubrication, friction is reduced by external lubrication.
Yet heat that is formed when
lubricant is diminished or totally cleared away shortens material
life due to increasing wear.
Kestoil® should be preferred in applications where
dimensional stability and weatherability of Kestamid® are
questionable. As additives fill up
pores, humidity and water absorption are reduced; sustaining
dimensional stability. As the lubricant additive in Kestoil® is liquid, in
high pressure and bearing applications liquid
oil may leak out.
In such applications,
solid lubricant does not leak out, making Kestlub® a
better choice.
