Circlip risk of running out of groove? 1

[321GO]

Hi Guys,

please see attachment, this is a circlip groove intended to restrain a press fitted bearing.

I'm concerned this rounded cirlip could work itself out, what do you guys think?

Is the second detail drawing a better option (with the recess)?


Thank you all kindly in advance.

 

[kingnero]

Why not use conventional circlips with a rectangular cross-section and the appropriate groove?

I haven't seen semi-circular circlip grooves in any of the machinery that I work with...

I'm not overly familiar with automotive, though...

Either way, whoever makes these circlips should have the info you need about the groove dimensions...

 

[321GO]

"Why not use conventional circlips with a rectangular cross-section and the appropriate groove?"

Well, I know this is used in certain applications, but I'm wondering how it works.

Normally I would also be hesitant to use such a circular clip, but again it IS being used and was just wondering if anybody had any more experience with this.

 

[Tmoose]

Is the interference fit calculated to resist thrust forces toward the clip? Are there tangs on the circlip for removal?

If tangless, and you make the groove a little deeper, so center of the circular wire is below the basic bore diameter, if the bearing moves over it will "capture" the wire in the groove. Actually, the bearing race will have a radius that could depending on circlip wire diameter, perform the capturing function even if the groove depth = wire dia/2. The bearing will have to move axially before it touches and captures the circlip.

This method of retention has proven MUCH more secure than tru-arcs or spirolox for retaining wristpins in car and bike engines.

The wrist pin has a bevel on the OD, and Grooves must be provided to "dig out" the tangless circlip for disassembly.

http://image.hondatuningmagazine.com/f/tech/9314611+w200/0211_06z+Honda_Civic+Wrist_Pin.jpg