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Valenite tool holder

Martin w

Martin w

Super User
I have a bunch of Valenite inserts, but no tool holder for them. Can someone point me in the right direction. Not sure why the box says TNGG Should be WNGG I believe they are Trigon shape diamond insert but I am not sure what to look for in a tool holder.
Thanks
Martin

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No I think hes saying the box doesnt necessarily indicate what they are, we were assuming wngg because the box was tngg but they could also be wnmg. The box is just a random box something else was put in.
 
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A few considerations to make before ordering a toolholder online ... first of all is the actual insert you have, if you don't have the correct identification it is possible that the hole in the insert or the insert size doesn't fit the holder geometry. If the insert is a WNMG-543 or something similar, the actual insert has an inscribed circle of 0.625", a thickness of 0.250" and a nose radius of 3/64". The holder that you have identified is a 1-1/4" x 1-1/4" square shank, you must have a pretty big lathe. Also, without knowing the grade of the insert, who knows if it's for non-ferrous metals, plain carbon steel, stainless, cast iron or something else ... My 2% is that if you don't have a lot of these on hand, better off getting a holder with matching inserts for the type of material you most often machine.
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lucsimoneau said:
better off getting a holder with matching inserts for the type of material you most often machine.
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Hey Luc, I don't believe the holder is affected by the material you plan to use. I believe that the holder is independent of that. I may be wrong for certain inserta, but I have never seen that for Trigon.
 
Thanks Luc.
All my holders are 1-1/4”. The lathe is 20”x 80”.I have around a hundred of these inserts.
I will measure the hole and thickness tomorrow and call the tool holder supplier.
 
quitereal said:
So just the thickness would identify it right? wnmg43 is 3/16 thick, a wnmg54 is 1/4
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I'm no expert on this subject cuz I used HSS till just a few years ago. But I've found that inscribed circle is a better unique qualifier for insert size than its thickness is. It's easy for me to imagine different thicknesses all fitting the same holder, but not so for inscribed circle. The difference between 1/4, 3/8, & 1/2 inch inscribed circle insert sizes is dramatic and obvious.

Also, for all you metric fans, it's quite literally obvious that imperial came before metric when it comes to inserts. I've never seen a true metric insert. They are all just imperfect conversions from perfect imperial to imperfect metric.

Flame suit on!
 
@Susquatch you're right that the holder is not related to the material being machined, I was just pointing out that if starting fresh, get a holder/insert combo that you know works together. For insert dimensions, the imperial rule is: DNMG-432: 4=inscribed circle in 1/8", 3= thickness in 1/16", 2=corner radius in 1/64". Take note that the inscribed circle is NOT the diameter of the mounting hole. @Martin w yup, contact your tool supplier, they will know the holder part number (probably be something like MWLNR-204D like you had mentioned). @Susquatch tool supplier's (like Iscar, Kyocera, Sandvik) all have true metric versions of holders. Got caught in the past with a 25mm x 25mm tool holder for an imperial CNC machine that uses 1.0" x 1.0" tool shanks, not a happy camper!!!
 
lucsimoneau said:
@Susquatch tool supplier's (like Iscar, Kyocera, Sandvik) all have true metric versions of holders. Got caught in the past with a 25mm x 25mm tool holder for an imperial CNC machine that uses 1.0" x 1.0" tool shanks, not a happy camper!!!
Click to expand...

Yup, but that's tool holders. I was specifically referring to inserts.
 
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