Voltage Question for Micro Gearmotor

Support Motor controllers/drivers and motors
1

I have an application that will need two (2) micro gearmotors for a low torque and low RPM (60-90). I am considering getting the 210:1 Micro Metal Gearmotor LP 6V.

I plan on connecting the two in parallel to a single battery source, but not sure what would happen if they were powered by 3V source rather than a 6V source. For example, two 1.5 V, D sized cells in series.

Just for discussion sake, how would a single motor perform if it the potential was 3V instead of 6V? The expected load on the motor will be well below the stall torque, maybe 5-10 in-oz. The run time would be a few minutes before a long period of rest.

My guess is using less voltage would reduce the RPM and available torque. How much I am not sure. Any ideas?

Thanks

2

Hello.

In general, small brushed DC motors like these will run at about half the rated speed, stall current, and stall torque if the input voltage is half of the motor’s rating.

-Nathan