Electric Motors for Fans

Electric motors are used to power fans across ventilation, extraction, cooling and air-handling systems. From industrial blowers to extractor fans, the motor needs to deliver reliable rotation at the required speed while coping with the demands of continuous or frequent operation.

Motors and Inverters supply a range of electric motors suitable for varying applications, with both single-phase and three-phase options available. Our range of motors can be used across axial fans, centrifugal fans, industrial blowers, air handling units, coolers and condensing fans, providing a stable and reliable source of power to your operation.

Motors for Industrial Fan Application

Fan motors have very different requirements depending on the size of the system, required airflow and operating environment. Industrial ventilation and extraction systems typically require three-phase motors that are better suited to continuous operation, whilst smaller fan installations can often use single-phase motors where a three-phase supply is unavailable.

It’s also important to consider the motors speed, as although fan applications typically use high-speed motors, the correct RPM will depend on the fan design and required airflow. Variable frequency drives (VFDs) can also offer greater control over the fan, allowing motor speeds to be adjusted by varying frequency and voltage.

Our Electric Motor Range

Our electric motor range includes both single-phase and three-phase options, providing solutions for different fan sizes, applications, and available power supplies.

Three-Phase Fan Motors

Three-phase fan motors are suitable for industrial ventilation, extraction, and larger fan systems where reliable operation and higher power are required. Our range includes motors with varying power ratings, speeds, and mounting arrangements, allowing you to select the most compatible specification for your operation.

Single-Phase Fan Motors

Single-phase motors are typically used in smaller fans and installations where a three-phase supply is not available. A variety of models are available across different power and speed ratings, with mounting configurations that suit different equipment and setups. Many of our single-phase motors are also IP55 rated, providing extra protection against water jets and dust in certain industrial and commercial environments.

Choosing the Right Model for Your Fan

Selecting the correct fan motor involves more than just matching the motor’s kW rating, and instead it’s recommended to consider the entire operation, including the required fan speed, airflow, operating hours, starting requirements, and surrounding environment in order to gauge the best-suited motor for your application.

Other considerations include the motor’s mounting arrangement, ambient temperature, enclosure rating and whether the motor will be used as a VFD (variable frequency drive). Fans that operate in dusty, damp or washdown environments may require additional protection, while motors that run continuously should be correctly specified for the demands of the operation.

Benefits of the Right Fan Motor

A compatible motor can provide reliable and consistent fan operation whilst minimising energy wastage and mechanical stress. This is particularly important for ventilation, extraction, and cooling systems that operate for continuous periods or operational environments that need to respond to varying demands.

Where variable airflow is required, pairing a compatible motor with a VFD can provide much greater control over fan speed, and allows the system to run at the speed required rather than running continuously at full output.

Need a Motor for a Specific Fan Application?

Whether you need a motor for an industrial extraction system, HVAC application, cooling fan or blower, a member of our team can find the most compatible motor for your application, simply contact us and let us know what your operational needs are.

If you’re replacing a pre-existing fan motor, the nameplate can provide useful information including power, voltage, current, RPM, frequency and mounting details. If you’re unsure about how to confirm this information, our team would be happy to help you specify any of the information you need.

Frequently Asked Questions

What RPM motor do I need for my fan?

The required motor speed depends on your fan type, required airflow, pressure, and system design. Two-pole motors typically run at around 3,000 RPM or 50Hz, while four-pole motors run at around 1,500 RPM, so it’s recommended to assess the manufacturers specifications and your operations needs to select the best-suited fan.

Can I use a VFD to control a fan motor?

Yes, compatible fan motors can be controlled during VFD, allowing the motor system to be adjusted according to ventilation and airflow requirements. VFDs are commonly used with fans and extractors or where the speed and demand can vary, giving more precise control than simply running the fan at full speed.

Can I replace an IE2 fan motor with an IE3 or IE4 motor?

In many cases, a IE2 motor can be replaced with a higher-efficiency IE3 or IE4 motor, but the replacement must be a suitable model, considering the power, speed, frame size, mounting arrangement, electrical characteristics and physical dimensions. It’s also worth considering that higher-efficiency motors may also have different starting and operating characteristics, so the entire application should be assessed.

Are three-phase motors better for industrial fans?

Three-phase motors are commonly used for larger industrial fans, extraction systems and ventilation equipment, while single-phase motors can be suitable for smaller applications with less demand. The best suited motor depends on the fan’s power, speed, duty, cycle, electrical supply and operating environment.

What IP rating should a fan motor have?

The appropriate IP rating entirely depends on the environment in which the fan operates. IP55 is most commonly used in general industrial applications. Fans that operate in particularly wet, dusty, or exposed environments may require a higher level of protection, so the motor’s surroundings and cleaning requirements should be fully considered when selecting an IP rating.

Do you supply motors for axial and centrifugal fans?

Yes, we supply electric motors suitable for a wide variety of applications, including axial and centrifugal fans. The best-suited motor will depend on the fan’s power requirements, operating speed, duty cycle, mounting arrangement and electrical supply, so it’s always worth assessing the demands of the fan as well as the surrounding environment.