Thread: Another off idea...
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28-03-2020 #11
1 thing I'd say is use Angular Contact bearings if you are going to use Chinese DFU nuts & screws.
I used thrust bearings on my first small benchtop mill and on my second I've gone with Angular contact.
I would NEVER go back to thrust. They don't sit on the end of the ballscrew correctly and this causes a wobble you can't get rid of. Rigidity was crap no matter how tight all the axis were set up.
The new on with the AC's is rock solid and all the axis are set as 'light touch'. It really is chalk and cheese just because of a difference in bearing types used. I did however have to make my own bearing housings from scratch because of the sizes of AC bearings available.
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