Re: [CAD_CAM_EDM_DRO] Re: servo vs stepper

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