Polytetrafluoroethylene (PTFE) and Polyether Ether Ketone (PEEK) are the two most quoted options for plastic gears, bearings and wear parts in energy and renewables projects. Both are widely available, but they behave very differently once they are in service.
The notes below come from day to day production and export work with overseas buyers.
This category covers a family of products rather than a single item. In practice a buyer defines plastic gears, bearings and wear parts by three things: the base resin, the format or dimension, and the performance or certification level it has to meet. Typical options in this category include backlash controlled assemblies; PTFE and oil filled compounds; plain and self-lubricating grades. Materials most often specified are Polyamide, Polyether Ether Ketone, Polytetrafluoroethylene, UHMWPE, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.
In the energy and renewables sector the decision is usually driven by UV durability and flame retardancy, with electrical insulation as a secondary requirement. Typical end uses include cable jacketing, insulating barriers, battery housings.
These figures are typical for commercial grades and should be confirmed against the supplier's certificate for your specific lot.
| Material | Density | Tensile strength | Service temperature |
|---|---|---|---|
| Polyether Ether Ketone | 1.32 g/cm³ | 90-100 MPa | -50°C to 250°C |
| Polyamide | 1.13-1.15 g/cm³ | 60-85 MPa | -40°C to 120°C |
| Glass Filled Nylon | 1.36-1.38 g/cm³ | 130-190 MPa | -40°C to 150°C |
Polytetrafluoroethylene is frequently the default selection here: PTFE cannot be melt welded like other thermoplastics; it is sintered and then machined.
Polytetrafluoroethylene grades offer almost universal chemical inertness, while Polyether Ether Ketone brings retains strength at 250°C. For energy and renewables service the difference shows up in impact strength and in the long term behaviour under load.
The practical decision usually comes down to the service environment: temperature, chemical exposure and expected lifetime.
Beyond the base resin, most suppliers offer UV stabilised, food contact, flame retardant, anti-static and recycled content versions of the same product. Ask which additive package is included, because it is often the difference between a part that lasts three years and one that lasts ten.
Each step below has its own control points, and skipping one of them is where most defects start.
Secondary operations such as printing, welding, machining and assembly are often cheaper to do in the same factory, and they reduce the risk of mismatch between components.
Use this checklist when comparing two or three supplier quotations.
Send this list to your supplier with the drawing and you will receive comparable quotations from every factory you contact.
We can provide ISO 9001 quality system documentation, material certificates, RoHS and REACH statements, and where applicable food contact, flame retardancy or drinking water approvals. Tell us your target market and we will match the document set.
Yes. Standard samples are normally free of charge and shipped within three working days; custom samples are charged at cost and credited against the first production order.
Yes. {mat1} is one of our regular materials for this item, and we can supply virgin, modified and certified grades with full traceability. Material certificates and test reports are issued per batch.
A new tool typically takes 25 to 45 days depending on cavity count and complexity, followed by T1 samples within one week. Existing tools can usually start production within 10 to 15 days of order confirmation.
For standard sizes and colours the minimum is usually one pallet or one production run; for custom tooling the economic minimum depends on the tooling cost amortised over the expected volume. Send us your annual volume and we will calculate the break even point.
Share your specification and quantity with us and we will recommend the most cost effective material, tooling route and packing method for your market.
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