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Construction Equipment Tech Hydraulics, Electronics, General Engineering, ect in constr equip |
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#1
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internal O-ring grooves?
I am in the process of building the turning cylinders for my adt project and am having trouble figuring out how to cut the internal o ring grooves for the piston rod seals. bore is 0.190 so there is not much room to get a tool in. I tried grinding a tool bit to get inside the hole to cut the grooves but it broke. Any help would be appreciated.
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#2
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Re: internal O-ring grooves?
This is what i got......close you'll might be able to use this.http://www.penntoolco.com/30-464-2/?...CABEgKVh_D_BwE
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#3
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Re: internal O-ring grooves?
And this one might work depending on depth.http://internaltool.com/products/lat...etail-groovers
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#4
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Re: internal O-ring grooves?
and this one is great suplier too.https://www.carbideanddiamondtooling...ies-24-ID-2831
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#5
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Re: internal O-ring grooves?
Thanks Bo! Looks like I’m going to have to spend some $$ to get one of these cutters.
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#6
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Re: internal O-ring grooves?
Quote:
I've saw some for $40 to make one grove it's expensive yes. |
#7
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Re: internal O-ring grooves?
I use a Iscar Picco tool for internal grooves, paid something like 30 USD. There are many sizes. It has straight corners, function just fine. For a holder I drilled a hole in a square bar, put a couple of set screw.
An example, https://www.jurassictools.com/store/...ooving-bar-new
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#8
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Re: internal O-ring grooves?
I had been using tools that I ground myself for a while. Would never get consistency and forget about taking a couple more thousands off after original cut. Finally purchased these and still look new. First time I used the purchased ones I thought they came loose because I couldn’t feel anything. But it was cutting like butter. (In brass). Used them on stainless and on low carbon steels. Still like new. Unless you have a good understanding of cutting geometry and a pretty precise grinding wheel I (knowing what I know now) would spend the $20-40 on it. But on the flip side forming your own tools is rewarding once you get it correct. Me personally, not that I don’t want to learn and understand cutting geometries, I would rather learn how to make the parts . And if you are making grooves for the cylinders try to get the shortest shank tool. More rigid=better cuts. With these ones above I can secure them in quick change tool holders. A dedicated holder would be nice but these have flats ground into them so as long as they are on centerline and parallel I’m good to go. Hope this helps .
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