Since my lathe is old and worn carbide tends to chip easily on it. Today
I found a used parting holder and some Teledyne MP91M carbide inserts
that I'd like to learn about. The damaged label appears to show MP91M
and T?B?TN-21?4 and the inserts are inked MP91M, the holder has no
markings and may not even be right for them, they seem to fit snugly
without bottoming in the slot.
TIA
On 4/25/2024 4:31 PM, Bob La Londe wrote:
On 4/25/2024 4:15 PM, Jim Wilkins wrote:
Since my lathe is old and worn carbide tends to chip easily on it.
Today I found a used parting holder and some Teledyne MP91M carbide
inserts that I'd like to learn about. The damaged label appears to
show MP91M and T?B?TN-21?4 and the inserts are inked MP91M, the
holder has no markings and may not even be right for them, they seem
to fit snugly without bottoming in the slot.
TIA
Weird. The only MP91M I found look a lot like the TDEX or SEHT used
mostly in face mills.
Oh, I also found one that looks like its for a shoulder mill.
Oh, here is one that's a parting insert. Looks like its from603247545&mkgroupid=1236951576251627&rlsatarget=pla-4580909052765420&abcId=9316119&merchantid=51291&msclkid=f64af2bbb3b2192c44f9949154a6058f
Stellram. Now to just figure out if they make the size you need.
https://www.ebay.com/itm/186261864314?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1woCLvQvbRYeGTmhRsksReg23&norover=1&mkevt=1&mkrid=711-213727-13078-0&mkcid=2&itemid=186261864314&targetid=4580909052765420&device=c&mktype=&googleloc=&poi=&campaignid=
On 4/25/2024 4:15 PM, Jim Wilkins wrote:
Since my lathe is old and worn carbide tends to chip easily on it.
Today I found a used parting holder and some Teledyne MP91M carbide
inserts that I'd like to learn about. The damaged label appears to
show MP91M and T?B?TN-21?4 and the inserts are inked MP91M, the holder
has no markings and may not even be right for them, they seem to fit
snugly without bottoming in the slot.
TIA
Weird. The only MP91M I found look a lot like the TDEX or SEHT used
mostly in face mills.
Oh, I also found one that looks like its for a shoulder mill.
Oh, here is one that's a parting insert. Looks like its from Stellram.
Now to just figure out if they make the size you need.
"Snag" wrote in message news:v0f325$3eot8$1@dont-email.me...
That insert looks just like the ones for my Shars holder . The holder
is a Shars P3W x 3/4 , number on the container is 202-9578 . The insert package is numbered 404-0416 , might be the Shars part number . They are
1/8 thick , .562 long and .311 wide at the widest point .
Snag
-----------------------------------------
Thanks, the picture for 202-9578 shows the insert not bottomed in the
slot, same as mine, so the inserts should be correct for the holder,
they were in separate drawers of used tooling from auctions. The series
is GTN which I can now look up. Google is like magic; you have to know
the right words.
Are there any special tricks to using them? With HSS I run below chatter speed and keep the bottom of the groove constantly oiled with a needle dropper bottle.
"Snag" wrote in message news:v0f325$3eot8$1@dont-email.me...
That insert looks just like the ones for my Shars holder . The holder
is a Shars P3W x 3/4 , number on the container is 202-9578 . The insert package is numbered 404-0416 , might be the Shars part number . They are
1/8 thick , .562 long and .311 wide at the widest point .
Snag
-----------------------------------------
Thanks, the picture for 202-9578 shows the insert not bottomed in the slot, same as mine, so the inserts should be correct for the holder, they were in separate drawers of used tooling from auctions. The series is GTN which I
can now look up. Google is like magic; you have to know the right words.
Are there any special tricks to using them? With HSS I run below chatter speed and keep the bottom of the groove constantly oiled with a needle dropper bottle.
| Sysop: | Keyop |
|---|---|
| Location: | Huddersfield, West Yorkshire, UK |
| Users: | 508 |
| Nodes: | 16 (2 / 14) |
| Uptime: | 14:48:29 |
| Calls: | 9,991 |
| Calls today: | 1 |
| Files: | 13,839 |
| Messages: | 6,359,892 |
| Posted today: | 1 |