ANSI 25 Chain – ANSI Standard Roller Chain 25R

Available in these sizes:

Certified by ANSI, the American National Standards Association, the quality and characteristics of performance are always assured. Roller chains of this size are often used for industrial applications, which is ideal for this rugged chain.


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Chain Width and Pitch

The distance between roller pins in an ANSI 25 chain is defined as the pitch, while the distance between link plates is known as the width. Chain width will always be slightly greater than the width of the roller, as this allows for full clearance.

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ANSI 25 Roller Chain Construction

Roller chains in general and the ANSI 25 chain specifically are created with two types of links that alternate: roller links and pin links or sometimes referred to as inner and outer links. Roller chain is incredibly important for manufacturing, industrial and agricultural applications as it provides a great deal less friction than similar designs. This allows roller chains to be more durable, last longer with reduced wear and higher levels of efficiency. Roller chain comes in a variety of sizes, as certified by ANSI to ensure the interoperability of the parts. Sizes begin at #25 and up through #240.

At PEER Chain we work to earn your business by offering over-the-top customer service. We will work closely with you to ensure that you receive exactly the chain that you need for your specific application needs. We have decades of experience working with customers to provide exactly the correct chain — and we look forward to getting your project or machinery moving again quickly! Contact our knowledgeable chain professionals today at 800-523-4567 between 7:00 AM and 6:00 PM CST/CDT or via email to [email protected]. Anytime you need an attachment or type of chain you can contact us. After you answer a few simple questions, we can provide you with the specifications for the chain that you need.