Glass Filled Nylon (PA66-GF30) and Polyether Ether Ketone (PEEK) are the two most quoted options for plastic gears, bearings and wear parts in automotive projects. Both are widely available, but they behave very differently once they are in service.
Everything here can be checked on a real sample before you commit to a production order.
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 module 0.3 to 8; plain and self-lubricating grades; PTFE and oil filled compounds. Materials most often specified are Polyether Ether Ketone, Glass Filled Nylon, Polyamide, UHMWPE, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.
In the automotive sector the decision is usually driven by weight reduction and impact resistance, with heat stability as a secondary requirement. Typical end uses include fluid reservoirs, interior trim panels, bumpers and fascias.
The table below summarises the values that usually decide the material choice.
| Material | Density | Tensile strength | Service temperature |
|---|---|---|---|
| Polytetrafluoroethylene | 2.15-2.20 g/cm³ | 20-35 MPa | -200°C to 260°C |
| Polyoxymethylene | 1.41 g/cm³ | 60-70 MPa | -40°C to 100°C |
| Glass Filled Nylon | 1.36-1.38 g/cm³ | 130-190 MPa | -40°C to 150°C |
Glass Filled Nylon is frequently the default selection here: Glass filled nylon lets a plastic bracket replace die-cast metal at a fraction of the weight.
Glass Filled Nylon grades offer two to three times the stiffness of unfilled nylon, while Polyether Ether Ketone brings retains strength at 250°C. For automotive service the difference shows up in chemical resistance and in the long term behaviour under load.
Both materials can be validated quickly with a small sample run, which is the cheapest way to settle the argument for your own application.
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.
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.
Standard production tolerance follows the relevant ISO or DIN tolerance class for the process; tighter tolerances are possible after machining or grinding, but they add cost. Define the tolerance only on the functional dimensions.
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.
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.
Our team supplies plastic gears, bearings and wear parts to automotive customers worldwide, with samples, material certificates and full inspection reports available before mass production.
Rubber & Plastics © 2026 All Rights Reserved. Yingnet.com — Global B2B trade platform for rubber & plastics manufacturers.
About Us | Contact Us | Help Center | Sitemap