Gear wheels are mainly used to transfer the drive to other gears, belts and chains. The basic requirement for such wheels is very high strength, low coefficient of friction, adequate chemical resistance or resistance to high or low temperature.
Gear wheels are mainly made of constructional materials such as:
polyamide (PA6G; PA6; PA66 etc.).
polyacetal (POM-C; POM-H) – polyoxymethylene
polyethylene terephthalate (PET).
For more demanding applications, high-temperature plastic materials can be used, which have very good mechanical parameters and a much higher operating temperature:
polyetheretherether ketone (PEEK),
polyvinylidene fluoride (PVDF).
Depending on the application, we can use material with fillers such as glass or carbon fibre or use plastics with lubricating additives. Thanks to such modifications we can obtain higher mechanical parameters or lower friction coefficient.