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WEG W21 and W22 three-phase industrial electric motors
WEG’s three-phase W21 aluminum and W22 cast iron industrial electric motors transform electrical energy into mechanical force with high efficiency, reliability, and a long lifespan, helping reduce consumption and emissions in many manufacturing sectors. The W21 series offers lightweight construction, wide mounting flexibility, and dedicated versions for specific applications, such as ventilation or brake motors. The W22 series boasts the highest energy efficiency classes, reduced vibration, simplified maintenance, and full compatibility with inverters and speed control systems.
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• W21
W21 Series
W21 series aluminum motors represent the pinnacle of lightweight design, efficiency, and operational flexibility. These motors offer the benefits of a robust cast iron line in a lightweight construction, with an innovative design that ensures unprecedented installation versatility.
Patented multi-mounting system
The terminal box can be positioned at the top or on either side, and can be rotated in 90° increments to facilitate connecting power cables in any position. This unique system eliminates the need for mechanical modifications to the motor feet, greatly simplifying installation and ensuring full interchangeability with existing cast iron motors.
Efficiency and performance
Available in IE3 and IE4 efficiency classes, W21 motors cover a power range from 0.12 kW to 37 kW with 2-, 4-, 6-, and 8-pole configurations. The IP55 protection rating, Class F insulation, and a temperature range of -20°C to +40°C make them ideal for industrial applications such as pumps, fans, and compressors.
Specialized versions
In addition to the standard multi-mount version, the W21 series offers specific designs for specific applications: brake motors, single-phase motors, marine motors, and TEAO motors (IC 418) for ventilation and exhaust gas applications. These specialized configurations maintain the same reliability, ease of maintenance, and low energy consumption, perfectly adapting to every application requirement.
Main features
• W22
W22 Series
W22 series cast iron motors represent excellence in industrial energy efficiency. With electric motors responsible for nearly 40% of the world’s energy consumption, optimizing their operation is essential for a sustainable future.
Superior performance
This new generation of motors surpasses the performance of the previous line, offering concrete and measurable benefits. The robust FC-200 cast iron construction ensures lower noise and vibration for a more comfortable working environment and longer machine life. Precision balancing according to ISO 8821 standards further reduces vibration even under critical conditions.
Energy efficiency and flexibility
Available in IE3, IE4, and IE5 efficiency classes, W22 motors cover power ratings from 0.12 kW to 500 kW with 2- to 12-pole configurations. Class F insulation, IP55 protection, and compatibility with inverters up to 690V ensure maximum energy efficiency with significant reductions in heat emissions and operating costs. Maintenance is simplified thanks to lubricated bearings with extended intervals of up to 25,000 hours, ensuring uninterrupted operation.
Industrial applications
The flexible, modular design with a 4×90° rotating terminal box allows for seamless integration into any industrial application. Ideal for fans, pumps, compressors, and heavy-duty industrial processes, W22 motors represent the solution where technology and sustainability meet to improve industrial performance.
Main features
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