Probably something like a CCMT090204 but no idea on it's properties. But could be CNMG because of the deep chip breaker.  Is there a ref number on the side of the insert ?

regards

Edited By Oldiron on 13/09/2020 12:08:10

Looks to be the MU type chipbreaker, but you should be able to deduce the full code from this GU catalogue

https://www.sumitool.com/en/downloads/assets/mt-catalog/IN531.pdf

Bill

Can you confirm the number Jon? There is no SCLCR1212-32S in this Sumitomo Catalogue I found online. Nor does Mr Google find it. There is a SCLCR1212-F09 for which Sumitomo list inserts: CCGT 060202 RF-X; CCMT 09T304 N-SU; and CCMT 120408 N-SU.

I find the numbers used to describe Carbide Inserts and their Holders hard to navigate! Thousands of different types optimised for almost every cutting operation and material imaginable. Unfortunately catalogues are aimed at Production Engineers with access to software selection tools and consultancy rather than 'Man in Shed' doing the best he can. Luckily, small workshops don't need anything like the full range of inserts. I tend to buy from the Hobby specialists because they sell general purpose holders taking common general purpose inserts and it keeps life simple. Buying from ebay opens up the possibility of getting hard to identify industrial surplus. Some older inserts and holders are impossible to buy new.

I don't recall seeing a simple guide to identifying inserts and holders. Easy enough to decode what an Insert reference means if the number is available; difficult to work back to the code from an unknown insert or holder. I don't know how to do it without taking a lot of measurements and slogging through the catalogues and this sort of web-page.

Dave

It is certainly single sided, and looks to me to be a CCMT12, the CCGT12 for aluminium would also be useful. The size is the inscribed circle diameter in mm, with this shape, just measure across the flats in mm.

This chart from the Carbide Depot is useful for identifying inserts:

http://www.carbidedepot.com/formulas-insert-d.htm

That will make it an CCMT 09, just looked like it was about the same as the 12mm holder width.

There used to be a firm called Carter Precision Tools, run by a chap called Carter who was, I understand a gunmaker who sold Sumitomo titainium carbide tips as a sideline. He was also, I think, the man who demonstrated the exceptional finish the tips could achieve at ME shows, perhaps 30 years ago. He specialised in Ti200A tips and I bought some and got good results with them, unless damaged they seemed to last almost forever. Mr Carter retired some years ago and I have not been able to find another supplier of these tips. They are not listed on the Sumitomo website or catalogues and the website contact line does not seem interested. Anyone know anything about these tips and/ or a possible source of supply?

Rod

Looking for CCMT 09 on the unnamed auction site, there are sets of 12mm square tools all using this size of insert for extremely good prices, which include a box of ten inserts.

Many thanks to Kiwi Bloke for filling in the history of the Sumitomo Titanium carbide tips marketing, I had not realised that there were 2 separate firms involved. Also thanks to Ian J for the copy of the Carter order form which provides useful information on the types of tips available 20 years ago. I bought my holders and tips from Mr Carter rather than from Mr Rivers – so it seems ( per Ian J ) that mine are ISO standard sizes, so I am luckier than Kiwi Bloke. The original tips sold by Mr Carter are no longer listed.

It seems unlikely that the Titanium carbide technology has just disappeared, so is anyone making tips with similar performance characteristics now?

Rod