Repairing broken links in plastic chains

Repairing Broken Links in Plastic Chains

Repairing Broken Links in Plastic Chains

Plastic Chains


Plastic chains are widely used in various industries due to their lightweight, corrosion resistance, and low cost. However, they are prone to breakage, especially when subjected to heavy loads, impact, or chemical exposure. When a plastic chain link breaks, it can cause downtime, safety hazards, and production losses. Therefore, it is important to know how to repair broken links in plastic chains.

Common Causes of Broken Links

Plastic chains can break due to various reasons, such as:

  • Excessive load
  • Impact from foreign objects
  • Chemical corrosion
  • Wear and tear
  • Ageing

Tools and Materials Needed for Repairing

To repair a broken link in a plastic chain, you will need the following tools and materials:

  • Replacement link
  • Needle-nose pliers
  • Wire cutters
  • Heat gun or hot water (for some types of plastic chains)
  • Sandpaper or abrasive cloth
  • Cleaning solvent (if the chain is dirty or greasy)

Step-by-Step Guide to Repairing Broken Links

  1. Identify the broken link and remove it from the chain using the pliers and cutters. If the link is melted, use the heat gun or hot water to soften it before removing.
  2. Clean the surrounding links and the new replacement link with the solvent if necessary.
  3. Sand the ends of the surrounding links to roughen the surface and enhance adhesion.
  4. Insert the replacement link into the gap and align it with the adjacent links.
  5. Use the pliers to close the link by pressing the protruding ends together firmly but not too tightly.
  6. If the link is made of heat-sensitive plastic, use the heat gun or hot water to re-melt the link ends and fuse them together.
  7. Inspect the repair and ensure that the link is securely attached and aligned with the rest of the chain.
  8. Test the repaired chain under normal operating conditions and monitor it for any signs of failure.

Preventive Measures for Avoiding Chain Breakage

To minimize the risk of plastic chain breakage, the following measures can be taken:

  • Use chains with higher load capacity or strength if possible.
  • Avoid exposing the chains to impact, chemical splashes, or extreme temperatures.
  • Inspect the chains regularly for signs of wear, cracks, or loose links.
  • Lubricate the chains with appropriate lubricants to reduce friction and corrosion.
  • Train the operators and workers to handle the equipment and chains properly.


Repairing broken links in plastic chains is a necessary skill for maintenance personnel and technicians who work with plastic chain systems. By following the above steps and preventive measures, you can extend the lifespan and reliability of your plastic chains and avoid costly downtime. For more information on plastic chains and related products, please visit our website at

Table Top Chains

About Ever-Power

Ever-Power is a leading supplier of plastic chains, leaf chains, conveyor chains, bush chains, double flex chains, sprocket chains, and other chain products in the Chinese market. Our chains are made of high-quality materials such as engineering plastics, stainless steel, and carbon steel, and are designed for various applications in industries such as food and beverage, automotive, and logistics. We have state-of-the-art CNC production and assembly equipment and a team of experienced engineers and technicians who can provide customized solutions and technical support. Our mission is to provide our customers with high-quality products, competitive prices, and attentive service. Please contact us for any inquiries or orders.

Ever-Power Factory


Q1: How to choose the right plastic chain for my application?

A1: The choice of plastic chain depends on various factors such as load capacity, speed, temperature, environment, and chemical exposure. You can consult our technical team for recommendations based on your requirements.

Q2: Can I repair a plastic chain that has multiple broken links?

A2: It is possible to repair a chain that has several broken links, but it may not be cost-effective or reliable in the long term. It is recommended to replace the entire chain or the damaged section.

Q3: Why do plastic chains break more easily than metal chains?

A3: Plastic chains have lower tensile strength and wear resistance than metal chains, and they are more susceptible to environmental factors such as UV radiation, chemical corrosion, and temperature fluctuations. However, plastic chains have the advantages of being lightweight, flexible, and noiseless, and are suitable for certain applications.

Q4: How often should I lubricate my plastic chain?

A4: The frequency of lubrication depends on the operating conditions and the type of lubricant used. It is recommended to follow the manufacturer’s instructions and perform visual inspections of the chain regularly to check for signs of dryness or excessive lubrication.

Q5: Can I use a plastic chain in a high-temperature environment?

A5: Some types of plastic chains can withstand high temperatures up to 120¡ãC, while others may deform or melt at lower temperatures. It is important to choose a chain that is suitable for the intended temperature range and application.


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