What are the disadvantages of coreless gear motors?

What are the disadvantages of coreless gear motors? Coreless motors are widely used, and many products in daily life incorporate coreless motors. However, every product has its advantages and disadvantages. Below, let’s take a look at the disadvantages of coreless motors:

Disadvantages of Coreless Motors:

When a DC motor is in a stationary state, if one phase of the winding is disconnected or one phase of the power supply is cut off while the power is on, the magnetic field generated by the winding creates two equal-magnitude, oppositely directed rotating magnetic fields. These fields interact with the rotor to produce equal-magnitude torques in opposite directions, canceling each other out, resulting in zero starting torque, and the motor fails to start.

The disadvantage of coreless gear motors is a potentially hazardous fault. First, we need to check if the DC motor is faulty, inspect whether there is an open circuit in the power supply, or if a fuse has blown. Then, check if there is an interruption in any of the three-phase windings.

When restarting the motor, if it encounters a blockage fault and cannot start, accompanied by a humming sound, promptly cut off the power supply. If a power cable is disconnected, identify the break. If the circuit is intact but a fuse has blown, replace it with a fuse of the same specification. If the starter is faulty, carefully inspect and repair the motor. If one phase of the winding is disconnected, consider rewiring or replacing the interrupted winding.

This concludes the introduction to the disadvantages of coreless motors by WKX MOTOR. From the perspective of current applications, the advantages of coreless motors outweigh their disadvantages, which is why their use is becoming increasingly widespread.