You Install Snap Rings Wrong!
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- čas přidán 5. 09. 2024
- You've probably been installing snap rings wrong all this time! There is a right and a wrong way to install snap rings. Snap rings are directional. On some things the direction is really important to hold the parts on the shaft. I know I've installed snap rings wrong before. TOOL LINKS: ↓↓↓↓
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It's hard to tell the rounded and flat side apart on the snap ring, but if you look closely you'll see it.
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I always got taught when fitting one, the smallest holes go outwards as it makes it easier to fit them and remove with your pliers as the holes are ever so slightly tapered.👍
From Wikipedia and the way I have always felt they should go:
Since most snap rings are stamped from sheet steel, one side is slightly rounded and the other has sharp, rough edges. This is due to the stamping die behaving like a cookie cutter and causing a slight rounding of the upper edge of the cut clip. The snap ring must always be installed such that force is transmitted to the retaining groove from the rounded side of the ring, not the rough/square-edged side. If a snap ring is positioned such that its flat side is pressed into the rounded edge of the groove then when load or force is applied, the flat edge of the snap ring will "bite" into the rounded edge of the retaining groove. The snap ring will distort and ride up the rounded edge, spreading an external snap ring and compressing an internal snap ring. This leaves the clip prone to being forced out of its groove and failing at its retaining function. The accompanying images illustrate the correct orientation of the snap ring in its groove. Wet or dry lubrication is recommended to reduce friction against the circlip and maintain function.
Based off of this text, it still wasn't clear to me which way it should go. So I had a look at the mentioned "accompanying images" (at en.wikipedia.org/wiki/Circlip#External_links), and apparently it's the opposite from how it's done in this video (i.e. the flat side should go on the part where the pushing force is coming from).
@@LudoA yep. Makes total sense when the groove is also slightly rounded. I have been doing what the video says but I would reverse from now on.
That’s pretty confusing. THE FLAT SIDE GOES TOWARD THE LOAD. ROUNDED SIDE TOWARD THE STOP. PERIOD.
i think it's because if the force pushes on the flat side, and the outside rounded edge experiences force, the rounded edge will naturally want to slide into the "closed" position on the clip, strengthening the retaining force. Clear as mud i know, but hey, once we break down ideas this microscopic you're bound to run into monotony lol
Also, after reading this, I wonder if he'll chang eth name to "I install snap rings wrong" lol. I would for a laugh lol
Makes perfect sense, here after a C-Clip came off of a Little Giant Ladder when my son was taking it out from underneath the house he saw it fly off so he found it and had him look it up came across this video so thanks for this vid appreciate it!🤙🏽🌴
Very thanks. It’s really important. I have experienced of seals blowing due to faulty installed snap ring
Thanks for bringing it up, a lot of people don’t want to improve even if they are doing something wrong.
Yea, I try to always improve!
Hı guys, i am a marine engineer. We always overhoul pumps, Diesel engines, compressors, etc. And there is always a discussion about how to mouth an extrernal or internal retaining ring. But mostly; the way we follow is to put rounded side outside and flat side inside.i have watched many videos about this issue , and read many comments about this discussion...according to vikipedia; rounded Side of retaining ring should look outside,and flat side should look at the part. Please check vikipedia, there are some drawings about how it should be mounted and why it should be mounted as the way they say....and i have to say this, everybody who really wonder about the mounting way is right. Because; if you are overhouling a 500 kW Diesel engine piston, you are really getting afraid of doing something wrong..so, it is normal to have some doubts about goudgeon pin retaining ring mounting way....but according to vikipedia, rounded Side of the retaining ring will always look outside..flats Side should be with the moving part which forces retaining ring towards out of groove.
I have been putting them on the way I did in the video. It really just depends what I am working on. You kind of have to see how the machine is designed and what kind of shaft the snap ring is going on. Do you know what the thought process is behind putting the rounded side out? It seams like it could pop off the shaft easier that way.
@@MattsShop i dont have a specific technical explanation also. On vikipedia, if you search with"" Snap ring- circlip""" you will see some drawings..according to that drawings, corners of Snap ring- grooves have a round also. The main purpose of that kind of mounting is this; rounded face of groove and Snap ring must match when Snap ring moves with force of part..
Two parts/surfaces are usually involved.
@Matt's Shop According to Wikipedia, installing them backwards (rounded side towards the force) could deform the ring and compromise the retention.
It's all new to me. I'm glad I found out the right way.
It does not matter wich side is straight og wich is rounded, what does matter, is that the grip holes are conical, and you want to install them with the smallest diameter of the grip holes facing out, for easier removal
That's a great point. Based off that understanding I would put it like you said.
The only reason I would think they wanted with the flat side facing the barring would be to provide a blow out to prevent further damage to something else.
Very good point though.
I just always put them so that the flat side digs into the shaft.
One way will stay on your pliers when you put force on them and the other way the ring wants to fly off. So if you put them on wrong you will have a hard time getting off later. Just saying
You're right. I have noticed that.
That's because the holes are tapered to aid in fitting
If the rounded surface of the snap ring is facing you it is much easier to remove the ring and it is harder for the bearing to pick a spot on a flat surface to force the ring off.
The rounded side is always the thrust side if anything is pushing towards the snap ring you want it pushing on the rounded side so it won't catch on it and rip it from its groove, on a transmission shaft the snap ring ends must be in the middle of the spline groove never on the high point always the low point
So you agree? The sharp side is installed on the shaft so that it bites into the metal when force is applied.
You are absolutely correct and very few people know about this.
Yes, it makes a huge difference! I'll probably get a lot of hate for this video lol
I would think that the round side would be up. My thinking is it would help seat the ring into the shaft better
Great pick up. Will have to go through the manuals I use and see if they have something about this. Thanks.
It's very seldomly written. I've really only seen it on older service manuals.
There is much confusion to be had here. I was always told by engineers and mechanics I know that the rounded side is not the side under pressure. This made sense to me as the groove would be cut square, but the rounded side of the clip might vary slightly with different batches of steel quality and hardness or even the sharpness of the stamping tool in its life cycle, but the flat side would always be the same under all circumstances, so would be a more reliable match to the groove dimension.
Saw the "flat side has to face a certain way" language today in the instructions to installing the several snap rings that have to be removed and replaced on the magnetic clutch kit on my car's A/C compressor.
Yup, see. I'm not crazy I have seen it on a lot of stuff.
Its also because the rounded side isnt exact on the corners and will allow so much slop. The rounded side is more exact at its crest so you want it arranged where the crest will come into into contact with whatever its snapped into. on piston wrist pins, sharp side goes out
I think some manufacturers must tumble their rings., I die cut gaskets so I'm very familiar with the concept of a rounded side and 100% expected to see it when I looked, but I spent 15 minutes examing my snap rings and there is absolutely no difference at 20X on the rings I have in stock
All the ones I have seen have the rounded edge. Even if it's a very tiny radius.
The title is "you install snap ring wrong".. yet 1) you are unsure yourself
2) you are actually wrong according to the snap ring design explanation on wikipedia🤣
I'm sure I'm unsure that Wikipedia is sure that I'm unsure. :)
@@MattsShop i'm sure they're sure
Excellent! Thank you so much for the info and video!
You´re right. Flat side should be opposite from the gear.
I think this is more about an unintended result from how they’re made, and less about it being designed this way. But having said this, I think I will use this difference in round and flat sides to my advantage from now on, now that I know this.
You are EXACTLY right! They are made like this because they are stamped out of a flat piece of steel. We will use this to our advantage.
It's cuz they stamp em
Exactly!
This
So which is it? Still not clear. Flat side facing out or flat side in?
I do flat side out. Digs into the shaft better.
As inspector the snap ring round side up but it's better flare side up it won't pop off
Beveled side in, sharp corner out!
I agree
if the rounded side is rounded around the outside then it doesnt matter as the inside is what holds
Yep, your wrong. See Tom T comment. He has a very good explanation. There is very rarely a perfect 90 degree corner on machined parts (the axel grove). When machine the fitting part that part will have a slight chamfer on the corresponding surface. Plus like Tom states it's a stamped snap ring. Look at almost any stamped part you will see a slightly rounded edge. As the punch (cookie cutter) starts to cut the material will get pushed down slightly before the actual cut starts. Of course there are some exceptions in stamping parts, but for the most part this holds true
I've been working on my trailer jack and the new snap ring keeps popping off. I going to try this and see if it hopefully works now.
Yea, try this it could help if your grove is still good.
did it help?
Great info. Been a mechanic for many years an never recall it being mentioned. I know washers have a flat and rounded side with flat side pointed down. Lit us know I will ask around Artie 👍
That's a good point. Metal washers are made the same way as these snap rings. They are pressed out of a sheet of steel. I always put the flat side of a washer down too.
Over thinking it, never had one pop out on it's own.
Overthinking it for the video. 2 seconds to do it in real life.
I've had the snap ring on my shifter fall off, right after installation, 2 TIMES in a row. This might explain my issue...
Your groove might be worn, too.
You’re kind of right, but the main reason why the sharp side is fitted up isn’t to prevent it being dislodged, it is because if the rounded edge is facing the part it causes less damage. According to RS Online: “It is also worth bearing in mind that because circlips are stamped out of sheet metal, they have a smooth side and a rough side. The clip should be installed with the smooth side facing the part and the rough side facing outwards in order to help prevent damage. To install an external circlip, follow the instructions below:
Firstly, obtain a pair of external circlip pliers which fit into the circlip end holes Next, insert the tips. Fit the plier tips into the grips on the ends of the circlip to be used Squeeze the handles; this will open the tips and expand the circlip. Fit the circlip in the circlip groove to complete the installation process”. uk.rs-online.com/web/generalDisplay.html?id=ideas-and-advice/circlips-guide
It's confusing, but I guess it depends.
Wikipedia says to install round side towards the groove and the flat side towards where the force/ load is.
Honda says to install the rounded side away from the force, basically the same as Wikipedia
While Yamaha says, to install it like how you install them in this video, Flat towards the groove so it kind of "bites" into it and round towards where the force is.
So for me, just make sure you always have a service manual for the piece you are working on.
Yes, it is very confusing. I just put the sharp side so it bites into the shaft. Works for me.
I had to replace my cv boot on my 4 wheeler today and couldn’t get the snap ring back on but figured the tie rod and hub would hold it in anyway what does anyone think of that? Should I try and redo it before I go on tour?
For me it's logical to put the flat side outside and the round in.
If i put the round side outside it is easier to slide away and go outside-and drop on the road. That's my thinking.
There is a beveled edge that should be on the outside facing you flat side away
Damn!!!! Not something else I've been doing wrong forever!!!
I remember once it was mentioned but other than that none.
Thanks for sharing. And I will look it up so we are all right.
WM
Yea, I used to install them wrong too before I realized it mattered. Now, I always check them.
@@MattsShop I looked it up. The load side is the flat side. Kinda confusing what the load side is so this is from wiki...
Since most Tru-Arc snap rings are stamped from sheet steel, they have a rounded side and a flat side.
This is due to the stamping die behaving like a cookie cutter and causing a slight rounding of the
upper edge of the cut clip. The Tru-Arc snap ring must always be installed with the rounded side
of the ring facing the side of the retaining groove that holds the load or the force. This is because
no machined groove can or should be machined with a square edge. Such an edge would constitute a
stress riser, potentially causing the shaft or part to crack at the hat edge. The grooves into which
snap rings are fitted are always machined with their edges (microscopically) rounded.
Note: It is possible to misinterpret the words in the previous paragraph.
To state it another way, the ring should be oriented so that the force is applied against
the flat side of the ring.
Manufactures pages weren't much help.
Hope this helps.
Your logic is checked. I agree with you.
Flat-Side ALWAYS AWAY from end of shaft to prevent slippage …”flatside inside rounded side outside”!
Snap ring makes sense. Shape on holding side
Never considered this, might be why mine keeps popping off its groove. Thanks!
Maybe, check it out!
Wouldn't it work either side?
It'll work, but it's not the "best way". The flat side is from when they punch it out of a sheet of steel.
U got it backwards
I do sharp side out.
@@MattsShop correct
I never considered this. But...jump in if I'm wrong...but do I see a bevel on the hole on the bearing that might just be asking for the rounded side?
I'm sure I've put snap wrings on wrong lots of times. But nobody has lost an eye.
All good info though.
You sound good bit like nate diaz
I know. Everyone tells me XD
czcams.com/video/hFrV4tl59VY/video.html The flat surface should always go next to the bearing being installed. The rounded surface of the snap rings can be pushed out under heavy loads.
Not a dig on you, but your voice sounds kind of like Walter White, Jr. from Breaking Bad ;-)
You think so?
@@MattsShop Yeah! Not dead nuts, but similar.
You did not show how to actually install the snap ring.
wrong, internal edge is the same.
No it's not. It is stamped so one edge is clearly flat.
not sure why so many dislikes. But completely makes sense!
Haters gonna hate.
@@MattsShop Seems like it haha. But it's honestly a good video. Most the Dislikes are just the jack asses who just do what they feel like it right. Owell.
Yea, I mean if you don't agree with me that's fine. Not that big a deal.
50/50 chance at being right
Haha exactly!