Re: Step motor torque

--- In CAD_CAM_EDM_DRO@egroups.com, "Doug Harrison" <prototype@c...>
wrote:

> I have the 42M1150 motors. The figures are correct. These motors

are DOGS!

> The detent torque is so high it saps the life from them. Rotor

inertia is

> also rather high. They won't even run with the Optistep board

because it

> has no ramping in jog. (You could, of course, set the rapid rate on

the

> Optistep to 3 IPM but that wouldn't be very useful either.)
>
> Go with the 34M470 motors.

Doug, hope you don't mind me asking, what
type of drivers are you using?

Detent torque of 42 frame motors is quite low
by comparison to smaller motors. Many people
mistake resonance problems for detent drag,
as they look and sound similar.

Now, I could be wrong, but it's possible your
system performance could be improved a lot
by using microstepping drivers.
-Roman