Ways to prevent motor overheating 3.1 Verify that the driver's current configuration is appropriate. The driver's half-current hold feature can be activated simultaneously with reducing the current if the setting is too high. 3.2 Inspect the driver for overload or overheating, and replace it with a higher power driver or increase heat dissipation measures if needed. 3.3 Determine if the stepper motor has been operating for an excessive amount of time. If so, think about extending the cooling period or employing a fan to dissipate heat. 3.4 Determine whether the outside temperature is excessively high and, if so, adjust the ventilation or operating temperature. 3.5 Examine the power cord and its connecting wires: To prevent altering the current flow and heating the stepper motor, make sure the power cord and its connecting wires are free of high impedance.

For any motor icluding sevomotor spindle motor, brushless dc motor,etc,It is normal to heat up during operation, and the same is true for stepper motors.

The winding coil and iron core make up the stepper motor's interior. The motor's operation and maintenance winding is resistant, so any current passing through it will result in loss.

"Copper loss" refers to the loss that is proportional to the square of the resistance and the current. Losses will also happen in the alternating magnetic field, in addition to the hysteresis eddy current effect in the iron core. This "iron loss" is the relationship between material, current, frequency, and voltage that determines its size.The motor's efficiency will be impacted by the expression of heat from both copper and iron losses. Stepping motors have a high current consumption and low efficiency because their primary goals are torque output and positioning accuracy.
Because of its high harmonic component and variable alternating current frequency in relation to speed, stepper motors typically produce heat.


The highest temperature that the motor can tolerate
The motor's internal insulation level primarily determines the permissible level of motor heating. It is only at temperatures above 130 degrees that the effectiveness of the internal insulation is destroyed. Therefore, the motor won't be harmed as long as the surface temperature is below 90 degrees and the internal temperature doesn't exceed 130 degrees.
As a result, a spot thermometer can be used to approximate the surface temperature of the stepper motor, which is typically between 70 and 80 degrees. The stepper motor's lifespan will not be impacted by this typical heating.


Ways to prevent motor overheating

3.1 Verify that the driver's current configuration is appropriate. The driver's half-current hold feature can be activated simultaneously with reducing the current if the setting is too high.

3.2 Inspect the driver for overload or overheating, and replace it with a higher power driver or increase heat dissipation measures if needed.

3.3 Determine if the stepper motor has been operating for an excessive amount of time. If so, think about extending the cooling period or employing a fan to dissipate heat.

3.4 Determine whether the outside temperature is excessively high and, if so, adjust the ventilation or operating temperature.

3.5 Examine the power cord and its connecting wires: To prevent altering the current flow and heating the stepper motor, make sure the power cord and its connecting wires are free of high impedance.