Results 1 to 10 of 10

Thread: What insert does this indexable mill takes?

Hybrid View

  1. #1
    Join Date
    Nov 2009
    Location
    San Francisco, CA
    Posts
    147

    Default What insert does this indexable mill takes?


  2. #2
    Join Date
    Dec 2004
    Location
    where the Snake swallows the Salmon
    Posts
    793

    Default

    You haven't given us a lot to go on, but it looks like the same triangular insert used on cheap lathe turning tools.

  3. #3
    Join Date
    Feb 2010
    Posts
    408

    Default

    One picture looks like the insert is set at an angle to give it rake. One picture it looks like it is straight in there.

    If it is straight (Not angled to give it some rake), It is probably a TPU or TPG 3XX or 4XX (Judging by size, I am guessing it is most likely a 3XX series)

  4. #4
    Join Date
    Dec 2007
    Location
    Richmond BC, Canuckistan
    Posts
    79

    Default

    It's most likely TNMG3xx or TNMG4xx.

    There's a good chart here:

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

    That will let you figure out what numbers to put in the x...

    Chris

  5. #5
    Join Date
    Aug 2006
    Location
    Beaverton, OR
    Posts
    7,184

    Default

    Ill say TNMG as well. Probably the most common insert out there.

  6. #6
    Join Date
    Oct 2006
    Location
    Ivins, Ut
    Posts
    557

    Default

    Actually, the circle measurement is whatever will fit WITHIN the confines of the sides of the triangle. The points are outside the circle.

  7. #7
    gnm109 Guest

    Default

    Quote Originally Posted by morehelium
    It's most likely TNMG3xx or TNMG4xx.

    There's a good chart here:

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

    That will let you figure out what numbers to put in the x...

    Chris

    Yes, I think it's a TNMG but I can't tell the I.C. from the picture. I use those on a few indexable holders. Thet need some rake as shown as the edges are square. They cut rather when well when properly oriented.....

  8. #8

    Default

    To be sure call Rouse but it looks like a TNMG33X. Find a piece of 3/8" diameter stock (washer or a slug) & put it on the insert if it touches all 3 sides it's a 3/8" IC (inscribed circle), if the slug is too small do the same with a 1/2" diameter & if that fits it's a 43X. The thickness for either is .187" or 3/16" & the tnr (tool nose radius) can be checked on a comparator or with a radius gage. A 1 is a 1/64", a 2 is a 1/32 & 3 is a 3/64", etc.

  9. #9
    Join Date
    Jun 2004
    Posts
    295

    Default

    Did you check their website? http://www.arno-rouse.com/us/products/milling.html What is marked on the side of the insert?

  10. #10
    Join Date
    May 2007
    Location
    Live Oak, TEXAS
    Posts
    1,514

    Default

    Start with a "TNMT"_ _ _ _
    You need to measure the thickness, and how big of "circle" the 3 points of the triangle would make.
    Is it solid, or does it have a hole thru it?
    You can figure it out pretty easily at this link:
    CARBIDE SIZING
    Last edited by KiddZimaHater; 07-31-2010 at 07:40 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •