5/8-18 Boring head
Close
Login to Your Account
Results 1 to 11 of 11
  1. #1
    Join Date
    Jun 2012
    Location
    Chicago, USA
    Posts
    1,540
    Post Thanks / Like
    Likes (Given)
    11
    Likes (Received)
    123

    Default 5/8-18 Boring head

    Hi all,

    I have a 5/8-18 boring head holder for my Weldon quick change system, but haven't had much luck in finding a boring head to fit. The only ones I found are a couple of beaten up Bridgeport brand heads on eBay. Did/does anyone else make boring holders with that thread?

    Thanks

    Lee



    Sent from my SM-N960U using Tapatalk

  2. #2
    Join Date
    Mar 2005
    Location
    Kansas
    Posts
    7,824
    Post Thanks / Like
    Likes (Given)
    476
    Likes (Received)
    3716

    Default

    Erickson tenthset heads. This one is a number 37, or 3/8. They also made number 50 1/2 in and number 62 5/8 in. Looking at the shank on your holder it is not exactly made for a tenthset but I think it would work.

    img_20200322_093212203.jpg

  3. Likes Illinoyance liked this post
  4. #3
    Join Date
    Jun 2012
    Location
    Chicago, USA
    Posts
    1,540
    Post Thanks / Like
    Likes (Given)
    11
    Likes (Received)
    123

    Default

    Thanks gbent,

    I haven't seen the tenthset heads before. Are they nice to use? It looks like they adjust without any tools?

    Thanks!

    Lee

    Sent from my SM-N960U using Tapatalk

  5. #4
    Join Date
    Mar 2005
    Location
    Kansas
    Posts
    7,824
    Post Thanks / Like
    Likes (Given)
    476
    Likes (Received)
    3716

    Default

    Very nice heads. No tools required for normal machining, but has lock screws for automatic tool changer use. Not a lot of range, as there's only one hole for the boring bar. I used to run them through the tool changer of a CNC without problem. Big adjustments are made with the boring bar diameter itself.

  6. #5
    Join Date
    Jun 2012
    Location
    Chicago, USA
    Posts
    1,540
    Post Thanks / Like
    Likes (Given)
    11
    Likes (Received)
    123

    Default

    Great, thanks! I'll start looking

    Lee

    Sent from my SM-N960U using Tapatalk

  7. #6
    Join Date
    Mar 2009
    Location
    Brunswick Oh USA
    Posts
    4,592
    Post Thanks / Like
    Likes (Given)
    5200
    Likes (Received)
    2733

    Default

    If you do find one, you may have to disassemble it. Some are getting up in years and dried lube makes for stiff action. Taking it apart is a little involved....and tricky. Wouldn't hurt to take pics. I've had both of mine apart and they still work!

  8. #7
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,224
    Post Thanks / Like
    Likes (Given)
    2507
    Likes (Received)
    1092

    Default

    Hey, that boring head adapter is for a Chandler boring facing head, for the smaller one.
    I have one here I may let go of if interested. It only holds 1/2" shank tools and don't have much travel.

    I would suggest making a threaded adapter to adapt it to a more popular boring head. I've done that to one I have here in my shop.

    Ken

  9. #8
    Join Date
    Jun 2012
    Location
    Chicago, USA
    Posts
    1,540
    Post Thanks / Like
    Likes (Given)
    11
    Likes (Received)
    123

    Default

    Hi Ken,

    Funny you should mention that - after I responded, I got to thinking about making an adaptor - should be fairly straightforward ...

    I found this holder in my drawer about 2 days after buying a set of 6 45 taper nikken boring bars from another member here... when it rains, it bores! I haven't received them yet, but I think they'll likely take care of my small-size boring needs.

    I do have a Chandler-Duplex boring/facing head sitting in my drawer, but it's a bigger one. I want to say it takes 3/4” bars. It's on an R8 taper - I half-heartedly tried to unscrew the shank a while back, but chickened out before I hurt anything. Do you know if the bigger sizes also take the 5/8-18 thread?

    Thanks!

    Lee

    Sent from my SM-N960U using Tapatalk

  10. #9
    Join Date
    Jan 2005
    Location
    Victoria, Texas, USA
    Posts
    4,224
    Post Thanks / Like
    Likes (Given)
    2507
    Likes (Received)
    1092

    Default

    The bigger size boring head has a 3/4-16 thread with a register diameter of 1.250". Ken

  11. #10
    Join Date
    Jun 2012
    Location
    Chicago, USA
    Posts
    1,540
    Post Thanks / Like
    Likes (Given)
    11
    Likes (Received)
    123

    Default

    Thanks Ken, good to know

    Lee

    Sent from my SM-N960U using Tapatalk

  12. #11
    Join Date
    Aug 2015
    Country
    UNITED STATES
    State/Province
    Illinois
    Posts
    1,488
    Post Thanks / Like
    Likes (Given)
    1091
    Likes (Received)
    635

    Default

    Tenthset heads were marketed under brands including Kennametal.
    Uf a Tenthset has been used with coolant it will probably be "frozen". Figure on a bath in hot w water and disassembly. After reassembly and lubrication it should work fine.


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
  •