How long is the service life of an electric motor?

The service life of the electric motor is determined by deterioration of insulation, friction of sliding parts, deterioration of bearings, etc. caused.

It is related to various factors such as the malfunction caused, and most of them depend on the condition of the bearing.The service life of the bearing is as follows, there are two types of service life, the service life of the mechanism and the service life of the lubricating oil.

• How long is the service life of electric motor bearings?

• How does an electric motor work?

• What is the principle of using electric motors?

How long is the service life of electric motor bearings?

1. Service life of lubricating oil due to thermal deterioration of lubricating oil

2. Mechanical service life due to fatigue

In most cases of electric motors, the influence of heat on the service life of the lubricating oil is greater than the influence of the load weight on the bearing on the service life of the machine. Therefore, if the service life of the engine is calculated based on the service life of the lubricating oil, the factor that has the greatest impact on the service life of the lubricating oil is the temperature, and the temperature greatly affects the service life.

How does an electric motor work?

The basic principle behind an electric motor is the interaction between a magnetic field and an electric current. The motor consists of two main components: the stator and the rotor. The stator is the stationary part of the motor and contains the coils of wire that produce the magnetic field. The rotor is the rotating part of the motor and contains the magnets that interact with the magnetic field.

When an electric current is passed through the coils of wire in the stator, it creates a magnetic field. The strength and direction of the magnetic field can be controlled by varying the amount and direction of the current. The rotor, which is mounted on a shaft, contains permanent magnets that are attracted to the magnetic field created by the stator.

As the magnetic field of the stator rotates, it pulls the rotor along with it. This rotation of the rotor produces mechanical energy, which can be used to power a variety of devices. The speed and torque of the motor can be controlled by adjusting the strength and direction of the magnetic field.

What is the principle of using electric motors?

The principle of motor and generator is basically the same, but the direction of energy conversion is different. The generator converts mechanical energy and kinetic energy into electrical energy through the load (e.g., hydropower and wind power). If there is no load, no current flows through the generator. The combination of electric motors, power electronics and microcontrollers has formed a new discipline called motor control. Before using the motor, you need to know whether the power supply used is DC or AC. If it is alternating current, you also need to know whether it is a three-phase or a single-phase alternating current. Connecting the wrong power supply leads to unnecessary losses and dangers. After the motor rotates, when the load is not connected or the load is very light, and the motor rotates quickly, the induced electromotive force is strong. At this time, the voltage on the motor is the voltage provided by the power supply minus the induced voltage, so that the current is weakened. When the load of the motor is high and the speed is low, the induced electric motor force is relatively low, so the power supply must provide a large current (power) to output/operate at the required large power.

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