AC Squirrel Cage Motor

AC squirrel cage motor is the most commonly used driving motor in industrial fans. It is a three-phase asynchronous motor, with its rotor resembling a round cage - inside is a ring of copper or aluminum strips, joined together at both ends by ring welding and inserted into the iron core slots. The structure is extremely simple and straightforward. It is precisely because of this mature and stable design that it has become the preferred choice for many general equipment, especially in the field of industrial fans. Over 95% of the choices are AC Squirrel Cage Motors. In the industrial fan industry, the advantages of squirrel cage motors are particularly obvious. They are a perfect match for the work of the fan.
Firstly, it delivers power accurately and is particularly energy-efficient. Fans generally do not require sudden changes in speed or torque fluctuations. The squirrel cage motor, through optimizing the internal winding and rotor, can precisely output the power required by the fan, avoiding the waste of electricity due to "overloading the small vehicle with a big horse". Under normal circumstances, its efficiency can reach 75% to 95%, and the higher the power, the more obvious this is. Over the long term, it can save a significant amount of electricity, which is particularly in line with the current trend of energy conservation and consumption reduction in factories.
No advanced technology is required. Switching on power directly or using a frequency converter for soft start is also possible. Ordinary workers can easily understand and operate it, without the need for specialized training. It saves manpower and is also safe.
In addition to these, the squirrel cage motor has several unique skills that make it particularly suitable for fans:
First, it is compact and flexible in installation. It has a small size and light weight, and can adapt to the horizontal or vertical placement of the fan, occupying little space.
Second, it starts smoothly and can handle the workload. Through the improvement of the design of the rotor slots, it has a small current during startup, less impact on the power grid, and can operate under short-term overload. When the fan starts or suddenly increases the air volume, it can remain stable without frequently breaking down.
Third, it is cost-effective and particularly durable. This motor has mature production technology, low material costs, and is much cheaper than other motors of the same power. Moreover, key components are less prone to failure, and with normal maintenance, it can last for more than ten years without any problems, saving the enterprise a lot of procurement and replacement costs.
Overall, the AC squirrel cage motor has relied on its simple and reliable structure, efficient and energy-saving performance, and high cost-effectiveness to become the top choice for the power part of industrial fans. It not only meets the daily operation needs of the fan but also helps the enterprise save electricity and maintenance costs, truly adding a boost to the smooth operation of industrial production.
In March ,2025, I received an inquiry from a customer in the Dominican Republic.
He needed to customize a motor for the fan. Due to the special nature of the fan, the shaft of the motor needed to be longer. By directly connecting the motor to the fan through the flange, it could be better installed on the fan frame.
Therefore, I contacted our engineers to lengthen the shaft, which was 10 cm longer than our regular size, and it was better linked with the fan.
After the customer received our motor and installed it with the fan, the operation was very good.
Here are the parameters of this motor.

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