Because of the difference in installation methods, no unnecessary strain is put on the ring. Spirolox retaining rings may be easier to install in comparison to snap rings because theyĪre “spiraled on”, and not stretched over the entire shaft diameter with snap ring pliers. Spirolox retaining rings could potentially be a good replacement for a snap ring if installation stress is a concern. Can Spirolox Retaining Rings replace a snap ring? For internal rings, 100% of the minimum tensile strength is allowed, while for external rings, only 80% of the minimum tensile is recommended.įind the minimum tensile strength of your material. Read more on why we measure the tensile strength of our alloys. This varies whether the ring is an internal or external ring. As with any metal component, if the ring is stretched beyond the yield point of the material, it will plastically deform.ĭeformation occurs when the installation stress exceeds the minimum tensile strength of the material. ![]() Installation stress is a critical design parameter for any ring. Is installation stress still a concern for Spirolox Retaining Rings? I’ve had deformation issues in the past when installing snap rings. They are available in different styles, but all retaining rings work by holding the assemblies with which they are used in place.Welcome back to the Smalley Ask the Expert Blog, where our engineers answer commonly asked retaining ring and wave spring questions. This week, our engineers answer questions about snap ring and spiral retaining ring installation. A retaining ring is a type of unthreaded fastener that’s used to hold shaft and bore assemblies in place. Some fasteners are threaded, whereas others are unthreaded. And whether it’s a tapered, untapered or spiral retaining ring, it will feature a circular shape that accommodates shafts and bores. They are typically made of metal alloys like stainless steel. As long as a retaining ring is an appropriate size, it will fit inside of the groove of a bore while subsequently holding the assembly in place. Retaining rings can also be placed in bores. Assuming a shaft has a precut groove, you can place a retaining ring in this groove so that it holds the assembly in place. Retaining rings can be placed around shafts. ![]() You can place a retaining ring on a shaft or inside of a bore. While available in different styles, all retaining rings work in the same way. ![]() You might be wondering how retaining rings work. The difference is that spiral retaining rings consist of a closed circle, whereas untapered retaining rings - as well as tapered retaining rings - feature an open circle. Spiral retaining rings are similar to untapered retaining rings: both styles feature an untapered design with the same thickness. Instead, they retain their thickness throughout. Untapered retaining rings don’t feature a tapered design. In other words, they become narrower towards the opening. Tapered retaining rings live up to their namesake by featuring a tapered design. ![]() There are different styles of retaining rings, including tapered and untapered. They essentially create a “shoulder” on the shaft or bore that holds the respective part in place. Overview of Retaining RingsĪlso known as snap rings or snap clips, retaining rings are circular-shaped fasteners that are designed for use with shafts or bores. They are used in fastening applications, but retaining rings don’t feature threading, nor do they feature the same cylindrical shape as bolts and screws. Retaining rings fall under the latter category. While threaded fasteners such as these are common, there are other fasteners that don’t feature any threading. When most people think of fasteners, they envision nuts and screws.
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