Need spec for indexable tool holder

[chucketn]

I was gifted with 2 packs of Sandvic Coromant inserts. The gifter swears they work miracles on hard steel. I did not get the tool holder or clamp for these inserts. The inserts are marked SNGN 12 04, 16ESNG 434A, and 620.
I have researched these inserts and found lots of info on metals they will work on, speeds and feeds, but cannot find an insert holder for them.
Can someone with knowledge of these inserts please explain how to find the insert holder and clams for these inserts? If I can get the proper clamps and spec for the tool holder, I think it’s within my capabilities to make the tool holder.
Chuck

 

[Omnimill]

Can't help specifically but go to the Sandvik Coromant site, they have lots of downloads avalable. Bound to be some specs of what you want somewhere.

 

[chucketn]

Been there, done that. Found spec for insert, not the holder.

Chuck

 

[Tin Falcon]

Well chuck a quick google search and I found the specs/catalog numbers for the tool holders made for those inserts. That is the good news.


http://www.sandvik.coromant.com/sitecollectiondocuments/downloads/global/catalogues/en-gb/turning/turn_a.pdf

Page A 214 has the imperial size tool holders.
But these are 1 in shank tool holders hardy intended for a 7" lathe.
Tin

 

[Tin Falcon]

the 620 :
CC620 (CA) – K01 (K01-K05)
'Pure' Al2O3-based ceramic. Recommended for high speed finishing of grey cast
irons under stable and dry conditions


from page A527 of above PDF.


clamp set catalog number 5412 034-0211 for 1/2 ic inserts.
Tin

 

[chucketn]

Tin, I can't reach the site you posted from here. Can't ping or tracert either. Thanks for the info.

Chuck

 

[Swifty]

As Tin said, they are ceramic inserts made for hardened steel and other tough material, probably needs a high spindle speed to get the best results.

Paul.

 

[Omnimill]

And a large machine to use a 1" toolholder.

 

[MachineTom]

Ceramic insert are very hard and brittle, any flex and it is broken. They have carbide seats and chip breakers of top. With a large nose radius, 0° rake angle, so then have to run at a negative angle. none of these things is good on a small lathe.

But if you want to try making a tool holder for these I will donate to you a hold down clamp and double threaded stud. Items that will surprise you in $$ if purchased new. I also have some of these ceramic insert free'bs, and would like to see if you can make them work for you.

PM if interested.

 

[chucketn]

Thanks, MachineTom. I'm very interested. PM sent.

Chuck

 

[Swifty]

I've used ceramic inserts in the past on hardened steel, high speed and light cuts are required. The swarf comes off as red hot streamers.

Paul.