How to judge the quality of 12v dc gear motor high torque? 12v dc gear motor high torque manufacturers have sorted out the following methods for you:

1. When the 12v dc gear motor high torque runs until the temperature rises steadily, stop and measure the resistance of the winding with a multimeter, usually a few tenths to a few ohms.
2. Rotate the 12v dc gear motor high torque by hand, if there is a significant resistance, it means that there is a short circuit inside the motor.
3. Connect the positive and negative poles, there will be a lot of resistance when twisting by hand, indicating that the line is normal, otherwise there will be a circuit breaker inside.
4. Check the commutation sparks when the power is turned on. No sparks are the best. There are little sparks. It is good, and the sparks are connected in a line. It is bad.
5. Add extra voltage, measure the speed, and the deviation from the indicated speed should not exceed 10.
6. After running until the temperature rise is stable, the surface temperature of 12v dc gear motor high torque should not exceed 80 degrees Celsius. If it exceeds this value, it means that the temperature rise of the motor is not enough.
7. After adding 1.2 times the extra voltage, let the 12v dc gear motor high torque run for 2 minutes to see if there is any abnormality.