Help!, to but or not to buy 48V, 10amp supplies

[crazyman]

I can get 3 of these supplies for a reasonably low price if I act soon.
At the moment I'm not sure if I will be going with Steppers or servos in a 3-5 axis cnc machine.

These supplies can be doubled up to give one supply at 96V,10a
or another at 48V, 20 or 30Amps.
I am not familar with all the combinations of voltage and current required to run various stepper and servo motors, Also, not having the motors yet adds to the confusion of possibilities.
Can anyone give me advice on if I should purchase these supplies or not to later be used as a 3-5 axis stepper or servo cnc machine?

[BigDaddyG]

Crazyman,
If your getting a deal, why not buy them. I use 48vdc @ 6 amp for a 3 axis system and have no problems at all. That is with Steppers. It is always a good idea to have too much in the way of vdc then not enough, because you can always limit the current with resistors to get where you want to be.

So, with that in mind I would reccommend you go for it. You can always turn them over if you have too. Armed with this information, you now can make your future motor / drive purchase's based on your power supplies.

Good Luck,
Glen

[crazyman]

Thx for the reply Glen,
I was thinking the same thing, the only unknown I have is if I go with Servos instead of steppers.
At the moment I'm not sure what is required in terms of voltage and current for servos, and also not sure how to relate the servo torque for what is needed.
Lets say I was needing a stepper with a 300-400 ounce*inch rating with a 5A/60V rating.
What would be an equivalent rated (torque/amps/volts) servo to do the same job? (I hear a servo will not need to be rated as high in torque as a stepper to do the same job as it does not loose torque as speed increases)
and what range of current and voltage would be needed to power such a servo?