8 Most Commonly Used Non-Metallic Materials in Non-Standard Machinery

1. POM


POM is the most commonly used material in non-standard machinery.

The surface of this material is relatively lubricating and wear-resistant. It can be used continuously at – 40 ° to 100 ℃.

The processing size is good, and the working accuracy can be guaranteed within 0.03mm at a constant temperature.

It is generally used for lightweight shaft or gear and other parts.



English abbreviation (PTFE), also known as plastic king, Teflon, is a polymer material.

It is very resistant to high and low temperatures and can reach – 180 ℃ to 260 ℃.

The friction coefficient is very low. The friction with steel materials can reach 0.04, which is close to rolling friction.

It is also one of the most corrosion-resistant materials in the world. It can resist any organic solution.

The material is relatively soft, difficult to process and easy to deform, so it is unable to process high-precision parts.

It is generally used for wear-resistant parts in mechanical design, such as chain guide rail, W-type sealing ring, etc.

3. Nylon


Nylon is one of the more materials used in non-standard machinery. It is wear-resistant and self-lubricating.

It can beat the lubricating oil at high temperature to make its friction coefficient very low. The material has high geometric accuracy and can process gear bearings and other parts.

High temperature resistance can reach 160 ℃ for continuous use, but soaking in water is easy to absorb water and expand, resulting in accuracy impact.

4. PVC


The name is polyethylene. This material is cheap and widely used. It is also one of the materials commonly used in non-standard machinery.

PVC has anti-static and non-static materials. In electronic products, and the belt used is anti-static. There is also a difference between PVC hard materials and soft materials.

Generally, hard materials, such as tooling board, bear the load. The melting point of the material is 75-90℃.

The product cannot be used in contact with food because high temperatures will release carcinogens.

5. Polyurethane


Pu, also known as Youli adhesive, has good oil resistance, toughness, wear resistance, aging resistance and adhesion;

It has the rigidity of plastic and the elasticity of rubber. Specialized for industrial use (PU);

Wheel, forklift wheel, sliding plate wheel, cigarette maker wheel, bearing wheel, driving wheel, etc;

Polyurethane is generally used for silencing layer, seal, buffer head, buffer, anti scratch part, anti scratch part, fixture cushion block and lightweight cushion.

6. ABS


ABS plastic is a resin made of three monomers, A (acrylonitrile) B (butadiene) S (styrene), which can be made into various resins with different contents.

It is suitable for general parts, wear-resistant parts and transmission parts in machinery.

ABS is also one of the main materials for 3D printing and the most stable material in 3D printing.

7. Rubber


It refers to the high elastic polymer material with reversible deformation. Increasing the friction coefficient on the surface of the drum in machinery is the rubber coated rubber, which has high wear resistance and good sealing performance.

Rubber is used for oil seal and O-ring. However, the rubber will age, generally cracking and hardening.

8. Bakelite


Chemical name: phenolic plastic, which has high mechanical strength and good wear resistance. There are anti-static and non-static in the selection.

It can be used for tooling board, fixture base plate and lightweight material, but its mechanical performance is poor and its precision after processing is not high.

Therefore, it can not be used in occasions with large load and high precision.

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