Balanced Spiral Retaining Ring

Product Description

Balanced 2-Turn Spiral Retaining Ring Internal


balanced feature statically balances the retaining ring. A series of slots, opposite the gap end, account for the missing material in the gap. This characteristic is very useful when the balance of the assembly is critical and it is necessary to reduce eccentric loading.

A balanced spiral retaining-ring, also known as a balanced circlip, is a type of spiral retaining ring that has been specifically designed to reduce the centrifugal forces that are exerted on the ring during operation. This is achieved by creating a symmetrical, or “balanced,” design that distributes the forces evenly around the ring.

Balanced spiral retaining-rings are typically used in applications where high speeds or heavy loads are present, such as in motors, gearboxes, and other high-performance mechanical systems. Because they are able to withstand these forces better than traditional spiral retaining rings, they can help extend the life of the mechanical system and reduce the risk of failure.

When choosing a balanced spiral retaining-ring, factors to consider include the diameter and width of the ring, the material it is made of, the load capacity, corrosion resistance, temperature range, and ease of installation. Additionally, it is important to consider the specific requirements of the application, such as the speed and load conditions that will be present and the compliance standards of the industry.

In general, balanced spiral retaining rings are more expensive than the standard ones, but they can offer significant advantages in terms of performance and reliability in certain applications.

Processing craft

Material purchased – Producing – First Testing – Coiling – Inspection – Heat Treatment – Cleaning – Surface Treatment – OQC – Packing – Shipping.


No gap; 360 retaining surface Economically produced in stainless steel because the coiling process produces no scrap No-Tooling-Charge on custom designs Easy installation and removal Used in the dynamic balance is demanding.

Material Carbon steel (SWC), 65Mn, cold-rolled steel, Stainless steel (SUS), Beryllium copper, Phosphor copper, Brass, Music wire, Piano wire (SWP), 60Si2Mn, 55CrSi, etc.
Finish blacking, zinc/nickel/chrome/silver/gold plating/powder coating, spraying coated, electrophoresis, etc.
Certification ISO 9001:2008, TS 16949 and ISO 14001
Quality Grade Optimal
Application Electronic products, Children’s toys, Baby carriages, bicycles, Kitchen appliances, Cameras, Printers, Office equipment, Precision equipment, and various kinds of vehicles
Load Type Compression, Torsion, Extension, Clip, Pin
Notes 1. Please offer us your spring specs; we can make springs based on your requirements.
2. A discount is offered if the order quantity is large.


Balanced Spiral Retaining Ring


  1. Different assemblies can achieve special load characteristics.
  2. High load capacity with a small spring deflection.
  3. Better space utilization compared to other springs.
  4. Standard dimensions can reduce costs.
  5. High fatigue life.
  6. Excellent performance on dampening effects, especially when stacked.


  1. Production Team Advantage: We have an excellent technology staff, and all of them with enough R&D experience also produce excellent products according to different customer drawings or samples;
  2. Price Advantage: As a manufacturer, we have big advantages in reducing the product’s cost and can also give more discounts to customers according to the order quantity. The traders can not be reached.
  3. Custom Service OEM: Custom service is available. We can manufacture standard and non-standard fastener products according to your drawings. We provide the perfect pre-sale and after-sale service.

Classification of retaining rings

Spiral retaining rings are different from traditional stamping retaining-rings; spiral circlips adopt a winding manufacturing process for precise diameter size. They have a uniform cross-section and are free of burrs. Spiral circlips meet military and aerospace industry specifications and are used in thousands of mechanical products worldwide.

Ordinary snap-type retaining-rings have ears on their structure, which cause interference with internal parts. The elastic spiral circlips made of stainless steel have a consistent cross-section without ears, so it will not interfere with matching parts after installation, and the cost of the retaining ring is lower than that of the cassette spiral circlips, The use of the retaining-ring can save the pillow block design, reduce the size of the shaft, save materials and processing time.

A wave retainign-ring is a removable spiral circlip with a wave shape. A wave retaining-ring can replace a retaining ring and a wave spring, which can apply pressure to the ball bearing in advance, and is also assembled in the groove like a normal spiral circlips.

The double-turn offset-type outer retaining-ring is used to replace the pillow block. It is used to hold the nozzle part and make it easy to assemble. The width of the spiral circlips is designed for zero interference, and its outer diameter is smaller than the diameter of the thread root. In the pressure gauge, the wave spiral circlips are installed in the shallow groove and only produce very little pressure on the surface glass. This retaining ring can not only fix the surface glass but will not crush the glass.

The retaining ring forms side walls on both sides of the synchronous pulley. This method eliminates the press-in side wall. In order to facilitate the replacement of the belt, the retaining-ring on one side adopts the easy-to-remove type. The wave spiral circlips are easy to meet the requirements of on-site maintenance. For example, when the hydraulic cylinder seal when the ring needs to be repaired, the spiral circlips can be quickly removed with a screwdriver and easily reinstalled.

Features of the balanced spiral retaining ring

The main features of balanced spiral retaining rings include:

  1. Symmetrical design: The ring is designed to be symmetrical, which helps to distribute the forces evenly around the ring and reduce the risk of failure.
  2. Reduced centrifugal force: The symmetrical design of the ring helps to reduce the centrifugal forces that are exerted on the ring during operation, making it more suitable for high-speed and high-load applications.
  3. Improved performance and reliability: The reduced centrifugal forces and symmetrical design of the ring can help extend the life of the mechanical system and reduce the risk of failure, resulting in improved performance and reliability.
  4. High-speed and high-load applications: Balanced spiral retaining rings are typically used in high-speed and high-load applications such as motors, gearboxes, and other high-performance mechanical systems.
  5. Material: Typically made of spring steel, stainless steel, or other durable materials that are able to withstand the environmental conditions in which the ring will be used.
  6. Load capacity: The ring must be able to withstand the forces that will be exerted on it during normal operation.
  7. Corrosion resistance: If the ring will be used in an environment where corrosion is a concern, it should be made of a material that is resistant to rust and other forms of corrosion.
  8. Temperature range: The ring should be able to operate within the temperature range of the application.
  9. Compliance: It is important to check if the ring is compliant with any relevant industry standards or regulations, such as those set by ASTM, ASME, or ANSI.
  10. Balance: The ring is balanced, which means that the weight is distributed evenly around the ring. This ensures that the ring will not vibrate excessively and affect the performance of the machinery.

Single Turn External Spiral Retaining Ring

The Versatile World of Retaining Rings

1.1 What Are Retaining Rings?

Retaining-rings are circular or semi-circular fasteners that securely fit into a groove or channel on a shaft or inside a bore. These precision-engineered components create a retaining shoulder, preventing axial movement and ensuring the overall stability and security of mechanical assemblies.

1.2 Nomenclature and Terminology

Retaining rings are known by various names, such as snap rings, circlips, or C-rings. These terms are often used interchangeably, but they all refer to the same fundamental concept of a retaining fastener.

Types of Retaining Rings

2.1 Internal Retaining-Rings

Internal retaining rings are designed to fit into a groove or channel within a bore, providing retention on the inside of the assembly. They are commonly used in applications where space constraints prevent the use of external retaining-rings.

2.2 External Retaining-Rings

External retaining-rings are designed to fit into a groove or channel on the outside of a shaft, providing retention from the exterior of the assembly. They are typically used when the components being retained are located on the outside of the bore.

2.3 Traditional Retaining-Rings

Traditional retaining rings are typically flat or straight-edged, offering a consistent level of retention. They are widely used in various industries, ranging from automotive to industrial machinery.

2.4 Beveled Retaining-Rings

Beveled retaining rings have a slight bevel or taper on one side, allowing for more precise retention. They are often used in applications where the retaining force needs to be evenly distributed.

2.5 E-Clips

E-clips, also known as wave or bowed E-rings, have a wave-like shape that offers a greater degree of flexibility and retention in certain applications. They can adapt to minor variations in groove dimensions.

Retaining Ring Materials

3.1 Carbon Steel

Carbon steel retaining-rings are cost-effective and provide good corrosion resistance. They are commonly used in various industrial applications, especially when frequent maintenance is possible.

3.2 Stainless Steel

Stainless steel retaining rings offer excellent corrosion resistance, making them ideal for applications in harsh environments, such as marine, chemical, or food processing industries.

3.3 Beryllium Copper

Beryllium copper retaining-rings provide exceptional strength, electrical conductivity, and resistance to corrosion. They are often used in electrical and high-temperature applications.

3.4 Phosphor Bronze

Phosphor bronze retaining rings are known for their high resistance to wear and tear. They are typically used in applications where frequent assembly and disassembly are required.

What are the key differences between internal and external retaining rings, and when should each type be used in an application?

Internal and external retaining-rings serve similar purposes, which is to secure components on a shaft or inside a bore, but they have distinct characteristics and applications:

Internal Retaining Rings:

  1. Location: Internal retaining-rings are designed to fit inside a bore or housing, creating a shoulder to prevent components from moving outward along the shaft.
  2. Installation: They are typically installed within a retaining ring groove machined on the inside of a bore or housing.
  3. Applications: Internal retaining-rings are commonly used in applications where it is more practical or necessary to secure components within a housing, such as in hydraulic cylinders, bearing housings, and some types of machine assemblies.

External Retaining Rings:

  1. Location: External retaining-rings are designed to fit around the outside of a shaft, preventing components from moving axially away from the shaft.
  2. Installation: They are installed in a retaining-ring groove on the outside of the shaft, which is typically machined into the shaft’s surface.
  3. Applications: External retaining rings are widely used in applications where it is necessary to secure components on a shaft, such as on automotive axles, gearboxes, or various machinery and equipment assemblies.

When to Use Each Type:

The choice between internal and external retaining rings depends on the specific requirements and constraints of the application. Here are some considerations:

  • Space Constraints: If there is limited space within a bore, an internal retaining-ring may be the better choice, as it doesn’t add to the shaft’s diameter. Conversely, if space is not a concern, external retaining rings can be used.
  • Load Direction: Consider the direction in which the load or force will be applied. If the component needs to resist axial forces pushing it away from the shaft, an external retaining-ring is appropriate. If the force is coming from inside the bore and pushing components outward, an internal retaining-ring should be used.
  • Accessibility: Consider how easy it is to access the installation area. External retaining rings are generally easier to install and remove than internal rings, especially in applications with limited access.
  • Environmental Factors: Consider the environment in which the retaining-rings will be used. External retaining-rings may be more suitable in environments with exposure to dust, moisture, or corrosive elements, as they can be easily inspected and replaced if needed.

In summary, the choice between internal and external retaining rings depends on the specific application’s design and functional requirements, including space, load direction, accessibility, and environmental factors.

Medium Duty 2 Turn Internal Spiral Retaining Ring

How do I determine the correct size of a retaining ring for a specific shaft or bore, and what standards or guidelines should I follow for sizing?

Determining the correct size of a retaining ring for a specific shaft or bore is essential to ensure proper functionality and safety. Here’s a general guideline on how to size a retaining ring:

1. Measure the Shaft or Bore:

  • Measure the outside diameter of the shaft (for external retaining rings) or the inside diameter of the bore (for internal retaining rings) accurately using calipers or a micrometer. Ensure your measurements are precise, as inaccuracies can lead to incorrect sizing.

2. Determine Groove Dimensions:

  • Measure the depth and width of the retaining ring groove on the shaft or bore. The groove dimensions should be compatible with the retaining ring’s specifications. If the groove isn’t already present, you will need to create one based on the retaining ring’s specifications.

3. Check for Standards:

  • Look for industry standards or guidelines that may apply to your specific application. Common standards for retaining rings include DIN (German), ANSI (American), and JIS (Japanese). These standards provide information on standard groove dimensions and tolerances.

4. Select the Type of Retaining Ring:

  • Determine whether you need an internal or external retaining ring, based on the specific requirements and design of your application. The choice between the two types is critical.

5. Refer to Manufacturer Data:

  • Consult the manufacturer’s documentation, which should specify the recommended retaining ring size(s) for a given shaft or bore diameter and groove dimensions. Manufacturers often provide detailed sizing charts and guidelines.

6. Calculate Ring Size:

  • Using the measurements and guidelines you’ve gathered, select the retaining ring size that matches the shaft or bore diameter and groove dimensions. Be sure to account for any necessary clearances and tolerances as specified by the manufacturer or standards.

7. Double-Check Your Selection:

  • Confirm that the selected retaining ring size is appropriate by comparing it with the application’s requirements, the groove dimensions, and the shaft or bore diameter. Ensure that it fits securely and doesn’t cause excessive stress on the components.

8. Perform a Mock Assembly:

  • Before finalizing your choice, consider conducting a mock assembly with the selected retaining ring to ensure it fits and functions correctly. This can help identify any potential issues before the final installation.

It’s important to note that when in doubt or dealing with critical applications, consulting with a retaining ring manufacturer or an engineer with experience in fastener selection is advisable. They can provide expert guidance, taking into account factors such as material selection, groove design, and load requirements. Properly sized and installed retaining rings are crucial for the safe and reliable operation of your equipment.


Q: What is a retaining-ring?

A retaining ring, also known as a snap ring or circlip, is a fastener used to secure components on a shaft or inside a bore. It is designed to hold parts in place by snapping into a groove or recess, preventing them from moving axially.

Q: What are the common types of retaining rings?

There are two primary types of retaining-rings: internal and external. Internal retaining-rings fit inside a bore or housing, while external retaining-rings fit around a shaft. These can further be categorized into various styles, including snap rings, E-rings, C-rings, and more.

Q: What materials are retaining-rings typically made from?

Retaining rings are commonly made from materials such as spring steel, carbon steel, stainless steel, and sometimes plastics. The choice of material depends on the specific application’s requirements, including factors like corrosion resistance, load-bearing capacity, and environmental conditions.

Q: How are retaining rings installed and removed?

Retaining-rings are typically installed and removed using specialized tools, such as retaining-ring pliers. To install a retaining-ring, the ring is compressed to fit it into the groove, and when released, it expands to secure the components. To remove a retaining ring, it is compressed using pliers or a similar tool to allow for easy extraction.

Q: What are some common applications for retaining rings?

Retaining-rings are used in various applications where components need to be secured on a shaft or inside a bore. Some common applications include automotive transmissions, gearboxes, industrial machinery, appliances, and many other mechanical and engineering systems.

Q: What is the purpose of the grooves or recesses in which retaining-rings are installed?

The grooves or recesses, known as retaining-ring grooves, are machined features in the shaft or bore where the retaining ring is installed. They provide a secure location for the ring to snap into, preventing the axial movement of the components being retained.

Q: Can retaining-rings be reused?

In many cases, retaining rings can be reused, provided they are not damaged during removal. However, it’s essential to inspect them for signs of wear, deformation, or other issues that may compromise their effectiveness. If in doubt, it’s generally recommended to replace them with new ones for safety and reliability.

Q: Are there different sizing standards for retaining rings?

Yes, there are various international standards and sizing conventions for retaining-rings, including DIN (German), ANSI (American), and JIS (Japanese). These standards define the dimensions and specifications of retaining-rings to ensure compatibility with different applications and components.

Q: Can retaining-rings fail, and what are the consequences of failure?

Retaining rings can fail if they are damaged, worn, or not installed correctly. The consequences of failure can include components coming loose, leading to machinery malfunction, damage, or even safety hazards. Regular inspection and maintenance are essential to prevent such failures.

Q: Are there alternatives to retaining rings for securing components on shafts or in bores?

Yes, there are alternative methods for securing components, including set screws, pins, keyways, and threads. The choice of method depends on the specific application and the requirements for security, ease of assembly, and maintenance.