Solutions to Overheating of Micro DC Motors

2025-08-08

During daily operation, micro DC motors are prone to overheating, which is a very common phenomenon in the micro-motor industry. After long-term operation, DC motors will inevitably overheat. When this happens, we need to carefully analyze the causes of overheating and find solutions based on specific reasons.

Wansheng Motor will analyze the solutions to overheating of micro DC motors for you:

Excessively high power supply voltage: If the power supply voltage of the micro DC motor is too high, the magnetic flux density through the core will be oversaturated, resulting in excessive current and thus overheating. In this case, a suitable power supply voltage regulator should be installed or the corresponding voltage should be adjusted.
Excessively low power supply voltage: Low power supply voltage can also cause overheating. When the voltage is too low, the motor operates unstablely, prone to fluctuating speed, which leads to overheating. At this time, we should contact the relevant department in time to increase the power supply voltage.
Core failure: Core failure causes iron loss and damage, leading to overheating. In this case, we should inspect and repair the core to eliminate the fault.
Friction between stator and rotor cores: Abnormal bearing clearance of the micro DC motor increases friction, resulting in overheating during operation. We need to timely inspect whether the bearing is abnormal and replace the bearing parts if necessary.
Winding surface covered with dust or foreign objects, affecting heat dissipation of the DC motor: Simply clean or wash the DC motor and keep the motor's ventilation grooves unobstructed.
Motor overload: Motor overload causes excessive current, leading to overheating during operation. At this time, the motor with a larger capacity should be replaced in time or the motor capacity should be increased.
Motor starting problems or excessive number of forward and reverse rotations: Frequent starting of the motor will cause instantaneous current to increase, leading to overheating. Frequent alternation of forward and reverse rotations results in abnormal motor operating speed and overheating. In most cases, this is caused by hardware problems of the motor, and in such cases, we need to replace the motor with a new one.

The above are the solutions to overheating of micro DC motors. When we find that the temperature of the micro DC motor is abnormal, we should immediately stop the motor, find out the problem in time, and solve it in accordance with the solution specifications. Proper installation also affects whether the motor overheats and its service life.

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Solutions to Overheating of Micro DC Motors

2025-08-08

Wansheng Motor will analyze the solutions to overheating of micro DC motors for you:

Excessively high power supply voltage: If the power supply voltage of the micro DC motor is too high, the magnetic flux density through the core will be oversaturated, resulting in excessive current and thus overheating. In this case, a suitable power supply voltage regulator should be installed or the corresponding voltage should be adjusted.
Excessively low power supply voltage: Low power supply voltage can also cause overheating. When the voltage is too low, the motor operates unstablely, prone to fluctuating speed, which leads to overheating. At this time, we should contact the relevant department in time to increase the power supply voltage.
Core failure: Core failure causes iron loss and damage, leading to overheating. In this case, we should inspect and repair the core to eliminate the fault.
Friction between stator and rotor cores: Abnormal bearing clearance of the micro DC motor increases friction, resulting in overheating during operation. We need to timely inspect whether the bearing is abnormal and replace the bearing parts if necessary.
Winding surface covered with dust or foreign objects, affecting heat dissipation of the DC motor: Simply clean or wash the DC motor and keep the motor's ventilation grooves unobstructed.
Motor overload: Motor overload causes excessive current, leading to overheating during operation. At this time, the motor with a larger capacity should be replaced in time or the motor capacity should be increased.
Motor starting problems or excessive number of forward and reverse rotations: Frequent starting of the motor will cause instantaneous current to increase, leading to overheating. Frequent alternation of forward and reverse rotations results in abnormal motor operating speed and overheating. In most cases, this is caused by hardware problems of the motor, and in such cases, we need to replace the motor with a new one.

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Solutions to Overheating of Micro DC Motors