Can you use a DC brushless motor as a torque motor?

I've got an outrunner brushless DC motor (Flipsky 63100 190KV 5500W if that's relevant). It'll be used to spin normally sometimes, but I also need it at other times to give resistance to motion.

Basically, I'll be running a current through it to spin one direction, but the motor will be forced to spin the opposite direction due to other forces. Would this hurt the motor in any way? Would it degrade the magnets or coils inside?

I read on here that this is what a torque motor is for, but this is what I have and I don't want to break the motor.

I understand that ESCs have a "governor mode" which monitors the RPM and gives more power to try and maintain the expected speed, but I've turned it off. If I resist the rotation of the motor, it slows down and I don't feel it drawing more power to overcome the resistance.

I don't have any way to measure the voltage/amp being drawn to actually know if any extra current is being drawn, but I don't have any reason to suspect the motor is getting any extra power when encountering resistance.

I figured I'd get a multimeter and check the current to see if there's more current drawn when the motor is stalled or not. But from what I've read elsewhere, if there's no extra current draw then the motor and ESC can be used in this way?

• Coil insulation deterioration and demagnetization are promoted by high temperature. How hot does it get?
– Abel
Jun 19, 2022 at 0:45
• @Abel I just purchased a meter that I can stick between the battery and ESC to see if there is a current spike. I guess I should buy an infrared thermometer too to make sure it doesn't get too hot. Jun 19, 2022 at 1:06
• No need. Hot to touch is a pretty good indicator. If you can hold it for a prolonged amount of time, chances are, it is less than 125 F
– Abel
Jun 19, 2022 at 1:19
• Measuring the delta in the coil resistance (and applying a formula) is a way to tell what the actual average coil temperature is. Better than measuring surface temperature, not as good as having an actual sensor buried within the coil. Jun 19, 2022 at 4:02
• People do this all the time. What is happening is that you are running the motor as a generator (regeneration mode). The controller has to support it. But other than that it is not problematic.\ Jun 19, 2022 at 4:08