Zinc Plated vs. Galvanized Roller Chain: What Sets Each Other Apart?
12th Mar 2025

Using roller chains in your industry can streamline your operations so you can produce better output. They are known for their durability, efficiency in power transmission, shock absorption, versatility, and how they can handle high loads. 

Roller chains are mechanical devices that take charge of transmitting power from a motor to a driven shaft. Two of the most popular types of roller chains today are the galvanized and the zinc-plated roller chain. This guide discusses the differences between the two so you can make the right choice. It shall cover the following:

– What is a zinc-plated roller chain?

– How about galvanized roller chains?

– Galvanized vs. zinc-plated roller chains: Their key differences

What Are Zinc-Plated Roller Chains?

A roller chain of the zinc-plated type has a zinc coating that protects them from corrosion and rusting. 

It features a thin layer of zinc that provides the right amount of protection without adding too much weight. In terms of its aesthetic appeal, they are characterized by their polished and attractive finish, making them a popular choice for visible machinery and decorative applications.

Because of those attributes, they are best used for applications where lightweight and flexibility are prerequisites, such as in outdoor and industrial settings. 

How About Galvanized Roller Chains?

Conversely, galvanized roller chains may be categorized as standards chains, but they are made from steel coated with a zinc layer through the process known as galvanization. 

Now, this galvanization process significantly boosts its resistance against corrosion and rust, especially in environments with moisture.

When it comes to its zinc layer, it is thicker, so there is extended durability, making it ideal for rougher environments. Plus, with its uneven texture and tougher resistance to wear, they can outperform zinc-plated chains in rugged applications. 

Galvanized vs. Zinc-Plated Roller Chains: Their Key Differences

1. How They Are Manufactured

Zinc-plated roller chains are manufactured by electroplating a thin zinc layer onto the chain, while the galvanized type is usually crafted by dipping the chain into zinc that is molten.

2. Thickness of Coating

Galvanized chains are significantly thicker than their zinc-plated counterpart, which is why the former is used for its robust protection for rigorous industrial processes.

3. Resistance Against Corrosion

Concerning superior corrosion resistance, galvanized chains are the clear winners. The way they are protected against corrosion makes them ideal for wet or salty conditions, thanks to their thicker zinc layer. 

On the other hand, zinc-plated roller chains are suitable for milder settings because of their moderate corrosion resistance properties.

4. Design

Galvanized chains are rougher in appearance compared with zinc-plated chains, which have a smoother and shiner finish.

5. Applications

Remember these mnemonics: zinc-plated chains are better used indoors, while their galvanized counterpart is for outdoors. The former is for indoor machinery, and light-duty applications, while the other is for outdoor machines, as well as for marine and coastal equipment.

Which Should You Choose?

When it comes to what sets each other apart, know that zinc-plated roller chains are intended for milder environments, such as indoor industrial operations, while galvanized roller chains work for rougher environments, such as in marine and coastal settings. So, the choice hugely depends on their purpose. 

Universal Chains is a trusted producer and manufacturer of chains, such as roller chains, doing business since the 1970s. Therefore, you can rely on us for helping your industries streamline their operations. From drive chains to stainless steel chains, we got what you need. Partner with us today.

References:

Zinc Plated vs Galvanized | Corrosion Resistance in Industrial Components

Zinc Plated Roller Chain – Renold Plc

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