The ring fasteners come in different sizes, which is determined by the diameter of the shaft or bore where they will be installed.Įxternal C-clips are measured by their internal diameter whereas internal C-clips are measured by their external diameter. Thus, they are measured by their diameter. Unlike hog rings, snap rings are a perfect circle.
Snap ring pliers how to#
How to measure snap rings Measuring snap rings Makes contact on its external circumference Makes contact on its internal circumference
The following is a list of their classification based on design: The circlip on the piston retains the piston pin or wrist pin in place while allowing it to rotate freely in both the piston and connecting rod.Ĭirclips are also classified according to their design. An example of their application is in the installation of a piston pin or gudgeon pin in the floating piston assembly. On the other hand, internal snap rings are retaining rings that are installed inside a bore or housing to keep assemblies or components from coming out. They are used in many applications including retaining the bearings on axles and in gear assembly inside the transmission. They are classified broadly into 2 main categories: external snap rings and internal snap rings.Įxternal snap rings are retaining rings that wrap around a shaft to retain shaft assemblies. There are many types of snap rings or retaining rings. Check out this article to learn some things that can cause snap rings to deform and how to avoid them.
If you handle the ring fasteners the wrong way or use the wrong tool, you can easily deform them and cause them to fail prematurely. However, that does not mean they are indestructible. That is why snap rings used in the assembly of floating pistons hardly fail despite the intense movement of the conrod and the high levels of heat in the chamber.Ĭirclips are also not easy to deform when compressing or expanding them. These materials are strong enough to withstand extreme pressure and heat. Examples of such materials include carbon steel, vanadium chrome steel alloy, and beryllium copper. Similar to other retaining clips, snap rings or circlips are made from very high tensile materials. This makes a portion of the C-clip remain exposed to act as a shoulder for retaining the specific components or assembly either inside a housing or on the shaft. Ideally, the size of the section of a circlip is larger than the depth of the groove to which it is installed. On the other hand, when installing the ring on a shaft, you pull the ends apart and release it onto the circlip’s groove on the shaft. You can do this by hand or use a special snap ring tool such as snap ring pliers. When installing a snap ring inside a bore or housing, you pull the ends of the ring together to compress it then release it into the groove. The gap allows the ring to expand or compress.
A snap ring or retaining ring has a C-shape or circular shape with a gap. To understand a snap ring even better, let’s take a look at how it works.
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