Hey Jason,
you`re right, if i think about it i don`t need a floating bearing at all.
i only spin max at 1200mm/min so around 10rps. max travel 200mm.
The designs i showed are based on other linear products, so i have to make a other design.
The problem is i`m not that good on "shooting the engineer".
The design i showed are one off the 50+ made.
I would love to make a very small mill almost compleet off E/G.
The spindle is still a problem, a nice one is so expensive.
I did some math and found a cheap brushless that has the same ratings as the NSK 125 watt series.
http://shop.maxonmotor.com/ishop/app
it`s the EC 22 (50watt cont.) abd the DEC50/5 (DRIVE)
This in combination with a NSK spindlehead.
Also thinking to use nema 17 steppers, since the price is low, mass to move is very light, small lead screws. only worry is acceleration.
Hope to complete the machine around before summer.
Studying takes a lot off time, now working on a simulation on a engine i designed.
Thanks for giving a new view about a machine concept.
Regards,
Roy B.