Quote Originally Posted by suraj1793 View Post
For my applications I require to machine hard woods for long periods of time and if possible in some very rare cases 10mm thick mild steel ran at very slow speeds for which bad precision and long machining time is not a major concern.
Sorry but your wasting your time and money.? Completely forget any ideas of cutting steel or even aluminium. In all honesty it will struggle to cut hardswoods very well.

What motors to use are least of your troubles in all honesty. The fact this machine uses's threaded rod is a much bigger issue because this will severly limit the performance so which motors or drives/psu doesn't matter as the screw pitch will be the choker regards speeds not motor size.!
Feeds and speeds required for cutting hard woods will be outside of what this machine can reach due to tiny pitch of the threaded rod. Then you have the accurecy issue or lack of it from threaded rod. Combine this with known problems like wearing out the lead nuts which means your constantly chasing the machine and poor repeatabilty then your on hinding to nothing and much frustration.

Personaly I would look around at other designs and try to find some better cheap linear components like supported linear rails and ballscrews.