Comment on Why do we still use stepper motors?
Eranziel@lemmy.world 5 months agoThat sounds like a problem from using too small of a drive. Every torque curve I’ve seen for brushless DC or AC servos is constant torque from 0 to about 75% rated RPM, and then starts to drop off.
KingRandomGuy@lemmy.world 5 months ago
That sounds about right. You can technically achieve full torque at 0 RPM, but the current required for that might be very high (and may not be practical for the small size, power limits, and cost of a 3D printer). I know this is a probably in Asian import mini-lathes - if you run the spindle too slow you won’t get much torque out because the driver can’t supply enough current.