Extra Length CAT-40 holders?
Close
Login to Your Account
Page 1 of 2 12 LastLast
Results 1 to 20 of 28
  1. #1
    Join Date
    Feb 2017
    Country
    UNITED STATES
    State/Province
    Maine
    Posts
    85
    Post Thanks / Like
    Likes (Given)
    64
    Likes (Received)
    42

    Default Extra Length CAT-40 holders?

    I've got a project coming up that's going to need tool holders in the 6" extension range. Material is aluminum, radial clearance is generous. In all my years of machining, I've never had to contend with length issues. Tools are drills (.09" to .375") and endmills (.187 to .500"). Most of the tool holders I'm finding are 6" gage length which is a bit tight, but could work. Lot of high efficiency milling and tight finishes. Suggestions?

  2. #2
    Join Date
    Jul 2006
    Location
    Hillsboro, New Hampshire
    Posts
    13,453
    Post Thanks / Like
    Likes (Given)
    2989
    Likes (Received)
    9076

    Default

    Techniks CNC Machine Tooling | ER Holder Extensions
    or similar, and some care used during tightening to get TIR to a couple tenths or so (so it may take a couple trial assemblies to get it).

    I've made my own drilling extensions to over a foot this way, it works when you use rational F/S. More sketchy in tougher materials, of course...

  3. #3
    Join Date
    Feb 2007
    Location
    Aberdeen, UK
    Posts
    4,613
    Post Thanks / Like
    Likes (Given)
    1682
    Likes (Received)
    2180

    Default

    Shrink holders - you don't need a fancy machine for low frequency use, just a mapp torch and something simple rigged up to rotate the holder while you heat it so that it's heated even.

  4. Likes Hardplates, mhajicek, dstryr liked this post
  5. #4
    Join Date
    May 2019
    Country
    UNITED STATES
    State/Province
    Pennsylvania
    Posts
    1,911
    Post Thanks / Like
    Likes (Given)
    1056
    Likes (Received)
    1232

    Default

    Can always shrink a shrink extension in

  6. #5
    Join Date
    Jan 2014
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    806
    Post Thanks / Like
    Likes (Given)
    220
    Likes (Received)
    586

    Default

    Parlec makes an 8in ER32. It is dual contact is well. We have a couple on the shelf. They work fine for light duty milling in our Okuma.

  7. #6
    Join Date
    Jul 2008
    Location
    Milverton, Ontario, Canada
    Posts
    821
    Post Thanks / Like
    Likes (Given)
    296
    Likes (Received)
    365

    Default

    MST slimline curve holders, they are shink fit.

  8. #7
    Join Date
    Jan 2014
    Country
    UNITED STATES
    State/Province
    Oregon
    Posts
    806
    Post Thanks / Like
    Likes (Given)
    220
    Likes (Received)
    586

    Default

    Quote Originally Posted by macds View Post
    MST slimline curve holders, they are shink fit.
    I'm a huge fan of MST Slimlines (we have a bunch). For tools over 6inch gage length though, you could easily have $1000+ into a single holder. Not sure that would be my first choice if you have plenty of radial clearance.

  9. #8
    Join Date
    Nov 2014
    Country
    UNITED STATES
    State/Province
    Florida
    Posts
    6,289
    Post Thanks / Like
    Likes (Given)
    2496
    Likes (Received)
    3109

    Default

    Quite a few 8" and 10" on MSC

  10. #9
    Join Date
    Jun 2012
    Location
    Michigan
    Posts
    5,980
    Post Thanks / Like
    Likes (Given)
    5635
    Likes (Received)
    3811

    Default

    Pioneer makes 6" and 8" gage lengths also.
    Product Data

  11. #10
    Join Date
    May 2017
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    1,878
    Post Thanks / Like
    Likes (Given)
    2484
    Likes (Received)
    1278

    Default

    Quote Originally Posted by macds View Post
    MST slimline curve holders, they are shink fit.
    I like those, but they don't seem to make them in CAT-40, unless it's hidden somewhere.

  12. #11
    Join Date
    Nov 2015
    Country
    UNITED STATES
    State/Province
    Colorado
    Posts
    382
    Post Thanks / Like
    Likes (Given)
    63
    Likes (Received)
    196

    Default

    Quote Originally Posted by macds View Post
    MST slimline curve holders, they are shink fit.
    I need some of these curve ones for my 5ax....WHERE can I buy them? I can't find any distro info and my current distributor doesnt have them

    Thanks

  13. #12
    Join Date
    Jan 2019
    Country
    UNITED STATES
    State/Province
    North Carolina
    Posts
    217
    Post Thanks / Like
    Likes (Given)
    38
    Likes (Received)
    147

    Default

    Quote Originally Posted by metalmadness View Post
    I need some of these curve ones for my 5ax....WHERE can I buy them? I can't find any distro info and my current distributor doesnt have them

    Thanks
    Yamazen tooling sells MST.

  14. #13
    Join Date
    Sep 2012
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    283
    Post Thanks / Like
    Likes (Given)
    85
    Likes (Received)
    96

    Default

    We use a lot of Technik ER16 and ER20s for 6-8" applications where clearance and rigidity are not issues. Good price and quality

  15. #14
    Join Date
    Mar 2006
    Location
    Mountain States USA
    Posts
    244
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    8

    Default

    Precision Components makes a line of long cat holders.

    CAT-40 END MILL EXTENSION - Precision Components

  16. #15
    Join Date
    May 2017
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    1,878
    Post Thanks / Like
    Likes (Given)
    2484
    Likes (Received)
    1278

    Default

    Quote Originally Posted by wms View Post
    Precision Components makes a line of long cat holders.

    CAT-40 END MILL EXTENSION - Precision Components
    Not quite as nice as the Mono Curve, but at least they're tapered. Makes no sense to me to have a 6" or 8" toolholder that's 3/4" diameter the whole length. I suppose there are applications...

  17. #16
    Join Date
    Feb 2005
    Location
    Hatch, NM Chile capital of the WORLD
    Posts
    9,698
    Post Thanks / Like
    Likes (Given)
    16477
    Likes (Received)
    11831

    Default

    Depending on what you really need.

    I use straight shank ER's in set screw holders more often than I should admit.

    A 3/4" 3" gage length Cat40, another 4" or 4.5" with the straight shank, and then
    hang the tool out some after that.

  18. #17
    Join Date
    Aug 2009
    Location
    Oakland, CA
    Posts
    403
    Post Thanks / Like
    Likes (Given)
    0
    Likes (Received)
    199

    Default

    PTC stocks a bunch of extended length CAT-40 holders--> CAT-40 END MILL EXTENSION - Precision Components and also some ER32 extensions that work on regular holders-->#32 TAPER ER SOLID EXTENSIONS - Precision Components

  19. #18
    Join Date
    Feb 2017
    Country
    UNITED STATES
    State/Province
    Maine
    Posts
    85
    Post Thanks / Like
    Likes (Given)
    64
    Likes (Received)
    42

    Default

    I should clarify; ridgitiy IS an issue, I need to machine on the side of the part when it's tipped at A90, but I've got the next part sticking straight up (dovetail work)
    Material is just 6061, but I would like to be aggressive with the material removal. Tooling is all 1/2" and under

    I've seen the ER-16's in MSC, but I've never used them beyond spot/drill/tap applications, unknown how they would perform in actual heavy milling (.075" RDOC/.75ADOC at 200 ipm, 10k rpm)

  20. #19
    Join Date
    Feb 2013
    Location
    Northeast USA
    Posts
    171
    Post Thanks / Like
    Likes (Given)
    88
    Likes (Received)
    19

    Default

    ER16 only goes up to 3/8 last I checked

    ER16/ER32 works well for aluminum, I use them interchangeably with side lock without changing speed/feed. If you're still doing sane speeds and feeds, and if you clean the collet/taper/shank with alcohol or similar so they're not oily, then it should work fine.

  21. #20
    Join Date
    May 2017
    Country
    UNITED STATES
    State/Province
    Minnesota
    Posts
    1,878
    Post Thanks / Like
    Likes (Given)
    2484
    Likes (Received)
    1278

    Default

    Quote Originally Posted by Liberty_Machine View Post
    I've seen the ER-16's in MSC, but I've never used them beyond spot/drill/tap applications, unknown how they would perform in actual heavy milling (.075" RDOC/.75ADOC at 200 ipm, 10k rpm)
    I use 4" ER-11, 16, and 32 for milling 17-4 and Ti grade 5 all the time. I can't get quite as aggressive as the shrink fit holders, but since I do prototype and am constantly changing tools it works out for me.


Tags for this Thread

Bookmarks

Posting Permissions

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