Kearney Trecker 30 spindle adaptor for D model milling machine
Close
Login to Your Account
Results 1 to 7 of 7
  1. #1
    Join Date
    Apr 2007
    Location
    omaha nebraska
    Posts
    64
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    70

    Default Kearney Trecker 30 spindle adaptor for D model milling machine

    Just got a d I'll a month ago and dint have the bigger collets, I know how hard it is to fin them ,I saw a post here about a homemade adapter for the spindle, and it got me thinking about an adapter I have been thinking about making for it. I used a kennametal nmtb 30 tg 75 collet holder.ompictures it is keyed to the spindle all I removed was the factory drive keys the parts are not hardened yet had less than .001 runout on .750 endmill shank. Ordered a da 180 collet holde I think it will fit with no modifications to my tooling.
    Attached Thumbnails Attached Thumbnails dc6979a6-9c67-4935-9aa0-bfc0986c99db.jpg   93325f6e-50e0-450d-b938-481d697f6fc1.jpg   79f57540-57ec-40aa-9827-4507d93341ae.jpg   31e5d1fa-1810-4908-b138-a985e16f623b.jpg   b19c81e4-fcfc-4cd5-961d-7240b5a623b0.jpg  


  2. Likes ramsay1, Ohio Mike liked this post
  3. #2
    Join Date
    Aug 2003
    Location
    port allen, louisiana usa
    Posts
    1,771
    Post Thanks / Like
    Likes (Given)
    488
    Likes (Received)
    414

    Default

    I wonder how much farther from the spindle bearings that puts your cutter...My 2d has had the spindle opened up to accept R8 tooling and I wonder how much rigidity i lose when I use end mill holders....You can get closer to the spindle bearings with collets, but all know the pitfalls of end mills with R8 collets and heavy milling...Keep us posted.. Cheers; Ramsay 1

  4. #3
    Join Date
    Apr 2007
    Location
    omaha nebraska
    Posts
    64
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    70

    Default

    Thanks for the reply I did some measurements and my guess is a standard length .750 endmill will have about an 1.5 inch longer stick out if you would shave the endmill all the way up into the spindle with the K&t collet I estimate a 2.00 stick out here are some photos thanks
    Attached Thumbnails Attached Thumbnails 79f94567-8388-45df-a85b-6c28ae460854.jpg   8b4dc4c3-f0af-48ff-ae73-e98395ea8e8a.jpg   0350f744-54c1-4fd3-a9f9-66d42f295fea.jpg  

  5. Likes ramsay1 liked this post
  6. #4
    Join Date
    Aug 2003
    Location
    port allen, louisiana usa
    Posts
    1,771
    Post Thanks / Like
    Likes (Given)
    488
    Likes (Received)
    414

    Default

    Keep us posted.. Can't wait to see your 2d making chips! Cheers; Ramsay 1

  7. #5
    Join Date
    Apr 2007
    Location
    omaha nebraska
    Posts
    64
    Post Thanks / Like
    Likes (Given)
    2
    Likes (Received)
    70

    Default Kearney Trecker D model universal attachment retrofit

    Thought I would add some photos of an adaptor for the drive gear on the universal attachment on a Kearney Trecker D rotary D milling machine. I have a 1972 machine with the no.30 taper spindle, the attachment had the B3 drive gear and B3 collets in spindle of attachment. The adaptor I made loses about 2 inches on rotary head spindle.i am uploading a short video on YouTube of the attachment thanks ed
    Attached Thumbnails Attached Thumbnails f7c42daa-4acb-44b4-9ad8-f6e17047d794.jpg   7598be4d-b5bd-40d4-af76-cda630f89bc5.jpg   79dbb4e3-3fb5-45a7-a538-c98fd03f8912.jpg   31f272e9-2eab-42ad-85bf-090b22eccb12.jpg  

  8. Likes mister honey liked this post
  9. #6
    Join Date
    Aug 2003
    Location
    port allen, louisiana usa
    Posts
    1,771
    Post Thanks / Like
    Likes (Given)
    488
    Likes (Received)
    414

    Default

    That's the gear we were discussing.. It appears to made for the b3 spindle..Another one I have the head for and no drive gear lol...I would have to adapt it to my machine if I had one as mine is now R8......Good job! Ramsay 1

  10. #7
    Join Date
    Aug 2003
    Location
    port allen, louisiana usa
    Posts
    1,771
    Post Thanks / Like
    Likes (Given)
    488
    Likes (Received)
    414

    Default 2D Universal milling Attachment

    Here is the Universal Milling Attachment with its clothes off.. Some of the parts anyhow....As usual, no drive gear and I have had this unit for years torn down in a bucket on the second floor of my shop.....Even if I found a B3 drive gear, I could not use the unit as my mill no longer accepts B3 tooling as it is now R8... I am still puzzled by the collet needed for the business end of this unit.. It is tapered and has drive keys within the bore of the spindle..Cheers; Ramsay 1
    Attached Thumbnails Attached Thumbnails 20200328_163154-1-.jpg   20200328_163204-1-.jpg   20200328_163218.jpg   20200328_163404.jpg  


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
  •