Learn more about the Revolox: Download the Revolutionary Revolox Product Guide.
Self-Locking Retaining Rings
Engineered for secure retention in high-speed applications.
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Self-Locking Retaining Rings
Smalley's Self-Locking Retaining Rings are designed for applications where conventional retaining rings may experience ring expansion or loss of retention due to high rotational speeds, vibration, rapid acceleration, or impact loading. By incorporating a locking feature directly into the retaining ring design, these rings provide enhanced security while maintaining the installation advantages and 360° groove engagement benefit of Smalley Spirolox® retaining rings. Available as custom-engineered solutions, self-locking retaining rings are offered in both external and internal configurations. Multiple locking styles are available, including Revolox® and Tab and Slot.
- Engineered for High RPM Applications
Self-locking designs help prevent ring expansion in applications with high rotational requirements.
- Resists Vibration and Impact Loading
Functions properly under vibration, rapid acceleration, and a degree of impact loading.
- Built on Proven Spirolox® Technology
Incorporates self-locking mechanical features into Smalley's proven spiral retaining ring technology.
- Multiple Locking Configurations Available
Designed to accommodate different performance and installation requirements.
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Revolox® Self-Locking Rings feature Smalley's patented dome-and-slot locking technology, which utilizes a dome-shaped protrusion that locks into a slot to help prevent ring expansion during operation. The design supports simple installation and automated assembly, making it well suited for high-volume production environments. The sturdy construction is not easily damaged during installation while maintaining the benefits of a Spirolox retaining ring. Revolox rings are commonly used in electric motors, transmissions, and other rotating assemblies where performance and ease of installation are required. Compared to traditional snap rings, Revolox rings offer lower rotating mass and inherently better balance, helping reduce vibration in dynamic applications. Revolox rings are available as custom-engineered parts.
- Patented Locking Technology
Utilizes a dome-shaped protrusion that locks into a slot to help prevent ring expansion.
- Easy Installation and Automated Assembly
Supports simple installation and is well suited for high-volume production environments.
- Lightweight and Well Balanced
Lower rotating mass and better balance than tapered section retaining rings.
Tab and Slot Self-Locking Rings utilize an interlocking tab-and-slot design that helps prevent ring expansion due to centrifugal forces and significantly increases rotational capacity. The self-locking feature can be incorporated on the outside diameter or along the centerline, depending on application requirements. Tab and Slot rings provide the highest RPM capability of Smalley's retaining ring solutions. Similar to Revolox rings, they can withstand vibration, function under rapid acceleration, and absorb a degree of impact loading. Tab and Slot rings are also available in heavier cross-sections of wire. Invented by Smalley in 1958, the design has been proven in thousands of high-speed applications.
- Highest RPM Capability
Provides the highest rotational capacity of Smalley's retaining ring solutions.
- Available in Heavier Wire Cross-Sections
Suitable for applications requiring larger, more robust retaining ring designs
- Clear Visual Installation Verification
Proper installation can be visually inspected after assembly.
Centerline Self-Locking Rings utilize the same interlocking tab-and-slot locking technology as standard Tab and Slot rings but position the locking feature along the centerline of the ring, as the name suggests. This placement prevents the locking feature from interfering with adjacent mating components while still providing the added security of a self-locking design. By locating the locking feature within the center of the ring profile, the design also helps prevent ring misalignment during loading. Centerline Self-Locking Rings can withstand vibration, function under rapid acceleration, and absorb a degree of impact loading. Once installed, the ring becomes tamper-resistant and cannot be removed without replacement.
- No Interference with Mating Components
Locking feature is positioned along the centerline of the ring rather than the inner or outer diameter.
- Helps Prevent Ring Misalignment
Centerline placement helps prevent misalignment during loading.
- Tamper-Resistant After Installation
Once installed, the ring cannot be removed without replacement.
Designed to Meet Your Exact Specifications
With over 40 material options and No-Tooling-Costs ™, custom solutions are both simple and cost-effective. Backed by multiple ISO certifications and flexible packaging options, we can support a wide range of quality and supply chain requirements. Smalley also offers prototyping to verify fit and performance before production.
See the Revolox Retaining Ring in Action
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Technical Resources
Explore the pros and cons of each of our fastening products in our High RPM Retaining Ring Solutions Technical Guide.
For installation tooling, please contact a Smalley engineer to learn about the best solution for your part.
