pressbrake1
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Same as 40/50 drawbar
- Thread starter hunter27
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hunter27
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I got several draw bars with the mill, the MT2 chuck does have a smaller diameter thread than the MT3 chuck.
My 2 to 3 adaptor has no thread just the taper inside and out and is pulled in by the MT 2 chuck as in my earlier picture. I do like idea as mentioned earlier of making a draw bar with a step just above the 2 to 3 adapter that could drift the adapter out, the only downside is it would have to be inserted into the bottom of the spindle first rather than down from the top but that shouldn't be a problem.
My 2 to 3 adaptor has no thread just the taper inside and out and is pulled in by the MT 2 chuck as in my earlier picture. I do like idea as mentioned earlier of making a draw bar with a step just above the 2 to 3 adapter that could drift the adapter out, the only downside is it would have to be inserted into the bottom of the spindle first rather than down from the top but that shouldn't be a problem.
not done it yet
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It it has a slot for a wedge extractor, just use the correct adaptor for that system. Bashing from above is likely not good for the bearings. Using the right parts for the job makes things simple.
Mt2 drawbar 10mm goes through the mt3 threads and retains both the mt2 and mt3, the mt3 has 12mm thread, just put the larger diameter drawbar in and give it a clunk.
hunter27
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The spindle bore is smaller than the adaptors through hole as mentioned above.
iNf
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To save messing around with adapters can the arbour be changed on the chuck you have? If not an er25 chuck or similar isn't expensive.
https://www.arceurotrade.co.uk/Cata...XyM8NR5oI8gtjJ_Akxu7RIQ0D3z11kQ4aAlSzEALw_wcB
Even cheaper on amazon/ aliexpress etc
https://www.arceurotrade.co.uk/Cata...XyM8NR5oI8gtjJ_Akxu7RIQ0D3z11kQ4aAlSzEALw_wcB
Even cheaper on amazon/ aliexpress etc
hunter27
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That was my first thought but looking at the very nicely made chuck, the cutters screw in to the collets. I think it is all one piece. This morning I made a new drawbar with a step just above the adaptor so I can now get it out.
I did also get a standard MT3 collet chuck with the mill. Thanks.
