Circlip

Circlip
Internal circlip
This diagram illustrates the removal of a snap ring from the rear hub of a bicycle, on which it is used to retain a single rear sprocket

A circlip (a combination of 'circle' and 'clip', and pronounced thus), also known as a C-Clip, snap ring or Jesus clip,[1] is a type of fastener consisting of a semi-flexible metal ring with open ends which can be snapped into place, into a machined groove on a dowel pin or other part to permit rotation but to prevent lateral movement. There are two basic types: internal and external, referring to whether they are fitted into a bore or over a shaft. Circlips are often used to secure pinned connections.

Contents

Details

The clips are known as wrist pin clips or wrist pin retainers when used to retain piston wrist pins. Also known in UK as Gudgeon Pins, clips are therefore known as Gudgeon pin clips, when used to retain piston gudgeon pins. The most commonly used circlip for this application is a simple spring steel snap ring, or plain wire ring.

Common examples include "E-clips" (e-ring) and the (both internal and external) snap ring or circlip. This general type of fasteners are sized to provide an interference fit onto (or into, in the case of an internal fastener) a groove or land when in use, such that they must be elastically deformed in order to install or remove them.

Installation and lubrication

Since circlips are stamped out of sheetmetals there is a smooth side and a rough side. To prevent potential damage, circlips are installed with the smooth side facing the part and the rough side facing out. Wet or dry lubrication is required for the circlip to maintain its function.

Circlips are designed to be removed with a special snap ring tool, but in field expedient situations, a pair of needle-nosed pliers or leverage with a flat-headed screwdriver are sometimes used.

See also

References

  1. ^ [1] Zinn, Lennard "Mountain Bike Performance Handbook," MBI, 1998, page157. ISBN 978-0933201958. Retrieved June 6, 2010.

External links


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Look at other dictionaries:

  • circlip — /sûrˈklip/ (engineering) noun A spring washer in the form of an incomplete circle, which fits into a groove and is used as a retaining ring …   Useful english dictionary

  • circlip — A flat retaining ring in the shape of an incomplete circle where the ends at the gap may have small holes for inserting special pliers to spread the circlip apart. Also called a snap ring. Also see internal circlip pliers piston pin circlip wrist …   Dictionary of automotive terms

  • circlip pliers — See internal circlip pliers …   Dictionary of automotive terms

  • Circlip — Anneau élastique Pour les articles homonymes, voir anneau. Anneau intérieur Les anneaux élastiques sont des composants d assemblage mécanique généralement montés dans des gorges réalisées sur des portées cylindrique …   Wikipédia en Français

  • circlip — noun A type of fastener consisting of a semi flexible metal ring with open ends which can be snapped into place Syn: snap ring …   Wiktionary

  • circlip — [ sə:klɪp] noun Brit. a metal ring sprung into a slot in a bar to hold something in place. Origin early 20th cent.: blend of circle or circular and clip1 …   English new terms dictionary

  • circlip — /ˈsɜklɪp/ (say serklip) noun a spring ring which is split at one point so that it can be fitted into a circular recess in a shaft, spindle, etc., usually to hold a wheel or other moving part on the shaft. {trademark} …  

  • pin circlip — See gudgeon pin circlip piston pin circlip wrist pin circlip …   Dictionary of automotive terms

  • gudgeon pin circlip — A British term for piston pin circlip …   Dictionary of automotive terms

  • piston pin circlip — A circlip which is used on either end of the piston pin to hold the pin in place …   Dictionary of automotive terms

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