Discontinued Inserts?

[VicParticipant @vic]

I was gifted a box of ten Sumitomo CCGT080202N-SC carbide inserts a while back. I thought I’d see if I could get a tool holder for them but I can’t see any mention of this size insert anywhere. The closest I’ve found is 0602 or 0902. Anyone made a tool for an insert around this size? Screw size is M3.

[OldironParticipant @oldiron]

Have you tried ringing Cutwel Ltd. They have a vast range of tool holders in stock. They have a website with contact details on.

Should not be too difficult to make or modify a holder as you have some inserts.

regards

[VicParticipant @vic]

I actually searched for the insert on the Sumitomo site and didn’t get any hits so I’m not hopeful. Could be worth a shot though?

[Kiwi BlokeParticipant @kiwibloke62605]

Hi Vic, I think that, around 2004, Sumitomo changed the dimensions of their small toolholders and inserts so that they were fully ISO-compliant. This instantly made the toolholders I had already bought more-or-less useless, because the non-ISO inserts were then only available as old stock.

Going from 2004-ish Sumitomo catalogues, I think (and excuse me if I’m wrong, but the cross-referencing is poor) CCGT 080202N-SC is the ‘New ISO’ number used by Sumitomo for the ISO number CCGM 080202 EFM. It also looks like New ISO No. CCGP030EFM is the same insert, or at least the same dimensions. Its a rhomboid, with sides 8.1 mm and 7.94 mm long, 2.38 mm thick, with a 0.2 mm tip radius, single-sided, screw fixed T12 cermet insert. They fit SCLCR 1010-03-S and SCBCR 1010-03-S (and SCLCL~, SCBCL~) holders, which have 10 mm square shanks. These, and the CCGP~ inserts were sold by a couple of outfits who served the UK model engineering world, and suit Myford-sized lathes perfectly.

I think that the inserts are therefore non-ISO-compliant, and are thus obsolete, as are the holders. You might find someone with some old holders, who might buy them (including me!), but I think you’ll have a job to find new holders. You could, of course, make them…

 

[VicParticipant @vic]

Hi Kiwi Bloke, thanks for that. It’s a shame you’re not local or you could have them.

[Martin ConnellyParticipant @martinconnelly55370]

Might be time to consider making a tool holder to suit them.

Martin C

[Martin Connelly]

On Martin Connelly Said:

Might be time to consider making a tool holder to suit them.

Martin C

As I only have a box of ten and they are no longer available I’m not sure it’s worth it.

[old martParticipant @oldmart]

If you don’t want the bother of making a holder for such a small quantity, you will find that they are easy to silver solder onto a shank for using one edge and possibly a custom boring bar.

[mgnbukParticipant @mgnbuk]

At my last employment we had the opposite situation – we had obsolete tool holders (face mills mainly) requiring manufacturer specific inserts that were no longer made. The only way we found to get inserts was from Ebay, buying full or part boxes when they were listed – as we machined graphite the carbide grades and / or coatings were not an issue as anything would work !

If you “do” Ebay you could consider listing them, as there will doubtless be someone out there looking for your obsolete inserts to be able to continue using their obsolete holder.

Cutwell are a very good company to deal with, but they will not be able to help here. They only stock “standard” holders, so would not be able to supply a replacement holder to suit an obsolete insert from a manufacturer that they do not supply.

Nigel B.

 

[Chris MateParticipant @chrismate31303]

You can search theory PDF files from manufacturers of the inserts, or you can make a temporarly toolholder, take a guess, then use feeler guages to clamp tool at various angles to see where it cuts the best on centerheight tip. Thats what I did with insets I got for free. I determined the angle type (Pos/Neatral/Neg) of toolholder to be, and the degrees it should sit, as well as how you want to point it to cut its best.
-I made a new toolholder, I modified an excisting toolholder, and busy making a boring bar, using the same inserts. The modified toolholder(re-milled the insert pocket angle) I now using the most, the insets are way more tuff than some of the cheap ones I got.

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