Regardless of the type of motor, all electric motors generate heat during operation, and DC motors are no exception. This is a normal phenomenon. However, if overheating occurs, it should be taken seriously. The cause of the overheating must be carefully analyzed to identify an appropriate solution. So, what specific causes lead to DC motor overheating? What solutions are available?

1. Excessively high or low power supply voltage: Overvoltage causes magnetic flux saturation, resulting in excessive current and overheating. Undervoltage leads to unstable motor operation with fluctuating speeds, causing overheating. Install an appropriate voltage regulator.
2. Issues with the stator or rotor core cause iron loss heating. Technical maintenance personnel can inspect and repair the core to resolve the fault.
3. Abnormal bearing clearance in DC motors generates friction, causing overheating during operation. Inspect bearings promptly; replace if significant issues are found.
4. Motor overload leads to excessive current and overheating. Replace with a higher-capacity motor.
5. Frequent starts or excessive reversals increase current, causing overheating. This typically indicates hardware failure; replacing the motor is recommended.
6. Contaminated or dirty winding surfaces impair heat dissipation, leading to overheating. Clean debris and foreign objects to ensure unobstructed ventilation during operation.