Re: Step motor torque

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

> > Now, I could be wrong, but it's possible your
> > system performance could be improved a lot
> > by using microstepping drivers.
> > -Roman
>
> Hi Roman;
> I am using Microkinetics DM8010 drivers at 5 microsteps. The

original

> DR8010 half stepping drivers were horrible in terms of resonance

with the 42

> motors. The present setup eliminated resonance issues but they are

still

> gutless above 600 RPM. The motor data sheet from MK confirms this.
>
> The detent torque of these motors is higher than in any motor I have

seen.

> Are you sure N42's are supposed to have lower detent torque?
>
> Doug

Above 600rpm they would lose a lot of torque.
Power is still not too bad, if you are running
half-coil bipolar there should still be 200oz
to 300oz there, and that is not bad power.
Remember if you double speed and halve torque
the power is still the same. The chart for
half-coil (72v) shows about the same power at
800rpm as at 400rpm.
Maybe you are running series full coil? This
gives more low speed power but much less
high speed power.

Normally the 42s have less detent torque in
comparison to their holding torque, compared to
a 34 with *similar* holding torque. I think you
have some monster motors there. :o)
-Roman