Re: [CAD_CAM_EDM_DRO] Re: servo vs stepper

Hi Jon,

Yeah, I'm learning that! (I'm thinking servos here) The current of the
Minerta servo motor is 1.9A, and voltage 50V. after that 82.2, which
I'm taking to be the torque. I still intend to load run them, after
I've got a drive for them. Now my new motors, 300W! 80V, 4.8A, 2500
RPM, yeah, I think that'll move the ways of the RF-31!

Alan KM6VV


Jon Elson wrote:

>
> Alan Marconett KM6VV wrote:
>
> > Hi Jeff,
> >
> > Thanks. I would have thought you'd need more HP or continuous torque
> > then that. 1700 RPM and 50 oz/in continuous torque. What feed and
> > rapids are you getting? If I've read the label on my daisy-wheel
> > printer motors correctly, I can get about 85 oz/in torque, and I think a
> > similar RPM. So they're STILL a possible for a Mill/Drill conversion.
> > Anyone interested in my Minerta servos? I'd trade for some Gecko
> > G320/340's!
>
> Remember steppers are rated on HOLDING torque, and the torque
> rapidly drops off as speed increases. Servos are usually rated on
> their CONTINUOUS torque, which applies from zero to full speed.
> Servos also have a PEAK torque, which can be anywhere from
> twice to 10 times the cont. torque!
>
> Jon