component selection

Hello everyone. I am trying to build a machine with a rotary axis slaved to a
linear. I am planning on driving the linear with a ball screw but may change
that to a rack/pinion setup. I will need to move 4' in about 15 seconds. The
questions I have are motor sizing and controlling a haas or yuasa rotary with a
galil controller. I plan on using a galil 1740 controller and amps if they
will be large enough. I was going to get a couple of the 12-80 galil amps off
ebay if they will fit the application. If I drive the linear with a gear reduced
servo with a secondary linear encoder for dual loop position and then slave a
rotary off it using the galil controller can I use a haas or yuasa rotary? I
thought about just using another servo motor for the rotary but I need a way
to hold a piece in the rotary as it's moved with the linear so the 5C indexer
from either company would be the easiest but certainly not the cheapest.

How do I determine motor size and compatability of a hass or yuasa rotary 5C
with my galil contoller. If I just use a motor that is oversized for the
application is there any drawbacks other than cost and efficency?

Thanks, Brad


[Non-text portions of this message have been removed]