Re: [CAD_CAM_EDM_DRO] stepper - servo Holding tourque

> Owen Lloyd wrote:
>
> > If I need min 400 in/oz Nema34 stepper motors. Would that mean I also
> >need 400 in/oz servo motors? Do they have the same torque rating system?
> >I've searched the archives and can't seem to locate any reference to

this.

> >
> >
> No. In the above example, a servo with 100 in/Oz of continuous torque

would probably work fine. It would

> likely have a peak torque rating of 400 In/Oz for 1 second or so.

Steppers have no feature like a servo's peak

> torque.
> Jon

Thank you Jon for the helpful info.
I'd like to pose one further question, if you don't mind.
I will be mounting my x axis directly to the ball screw via a coupler. My
buddy took a look at my lay out and speculated that I'd need a larger [more
torque] motor due to the absence of the pulleys.
Is this so? I mean in theory it sounds right but I'm still not convinced and
can't seem to grasp the math I need number crunch.
Owen