Kearney Trecker 30 spindle adaptor for D model milling machine
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  1. #1
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    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  


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  3. #2
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    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

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    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  

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  6. #4
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    Keep us posted.. Can't wait to see your 2d making chips! Cheers; Ramsay 1


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