A Guide to Understanding Different Types of Snap Rings

Snap rings, also known as retaining rings, are a type of fastener commonly used in industrial applications. These small, circular rings are used to secure components onto shafts or inside bores. There are several different types of snap rings available, each with unique features and applications. In this article, we’ll explore the different types of snap rings and their uses.

1. Internal Snap Rings

Internal snap rings, also known as bore rings or circlips, are used to secure components onto a shaft. They fit inside a bore or groove on the shaft and expand to secure the component in place. Internal snap rings are often used in transmissions, engines, and other mechanical systems.

2. External Snap Rings

External snap rings, also known as shaft rings or circlips, are used to secure components inside a bore. They fit around the outside diameter of the shaft and compress to secure the component in place. External snap rings are often used in automotive, industrial, and agricultural applications.

3. Constant Section Snap Rings

Constant section snap rings, also known as single turn snap rings, have a uniform cross-section throughout their circumference. They are designed to fit into a groove with a specific depth and width and are often used in the aerospace and automotive industries.

4. Beveled Snap Rings

Beveled snap rings have a tapered cross-section that allows them to fit into a wider range of groove sizes. They are often used in applications where there is a large range of tolerances, such as in hydraulic cylinders.

5. Spiral Retaining Rings

Spiral retaining rings are designed to fit into a groove without any gaps, making them ideal for applications where there is a high risk of component loss or damage. They are often used in heavy-duty equipment, such as mining machinery.

6. Eaton Snap Rings

Eaton snap rings, also known as E-rings, have a rectangular cross-section and are often used in aerospace and military applications. They are designed to fit into a groove with a specific depth and width and provide a secure hold even in harsh environments.

In conclusion, snap rings are an essential component in many industrial applications. Whether you need to secure components onto a shaft or inside a bore, there is a snap ring available to meet your needs. By understanding the different types of snap rings and their uses, you can choose the right snap ring for your application and ensure a secure and reliable hold.