Should I use a retaining ring (circlip) with the smooth rounded contour or with the three points of contact?

Question

What are the advantages/disadvantages of each kind?

Excellent answers, thank you. But none of you specified all aspects: which clip is easier to install, which clip handles more bearing stress, and the internal clip. I'll have to put it to vote.

Answer 1

There really isn't a great deal of advantage/disadvantage of one type over the other. The 'C' ring usually has a little more 'bearing surface' and the 'E' clip is usually a bit easier to install, but that's about it.

HTH

Doug

Answer 2

UNLESS you need an *internal* circlip where no e-ring could duplicate the function, you'll find the e-ring (the 3 point contact) a great deal easier to remove -- no need for the special tool for removing it. Of course, this assumes you don't undercut the groove and wind up burying the e-ring. A small screwdriver will pop an e-ring in just about any application.

So if the application could require removal for service, go with the e-ring. Frankly, I find circlips a PITA!

Answer 3

Check the axial thrust spec on the e-clip, as for higher loads the e-clip can dish out and pop off, where a full circlip is less likely to do that. Not usually a problem but it has happened to me in some applications. Otherwise, ease of application and removal would be the main factors.