441 ALU Vacuum Motor: A smarter alternative in times of rising copper prices

As copper prices continue to rise, manufacturers are facing increasing pressure to control material costs while reducing resource consumption. At Domel, we have turned this challenge into an opportunity by developing proven aluminium winding solutions that reduce reliance on copper while maintaining the quality and reliability our customers expect.

Domel has more than 15 years of experience in manufacturing aluminium-wound vacuum motors. Today, our aluminium winding solutions are localized in both Europe and China, allowing us to serve customers with solutions tailored to different markets and supply requirements.

For the Chinese market, Domel offers the 441 ALU vacuum motor, combining competitive cost, efficient material use and proven performance.

Less copper and smarter use of materials

Copper is a valuable but increasingly expensive raw material. Aluminium windings provide an alternative that reduces copper consumption and exposure to copper price volatility.

The lower density of aluminium also enables more resource-efficient use of materials. For manufacturers and other customers, this provides a practical way to combine cost optimization with a more sustainable material choice.

However, aluminium cannot simply replace copper  without adapting the motor design. Aluminium windings require specific engineering and manufacturing expertise to ensure appropriate thermal performance and long-term reliability.

This is where Domel's experience makes the difference. With more than 15 years of expertise in aluminium winding technology, we have developed the design and manufacturing know-how needed to deliver reliable solutions at our European and Chinese production locations.

441 ALU for the Chinese market

The 441 ALU vacuum motor is Domel's localized aluminium solution for the Chinese market. Local production brings the aluminium winding technology closer to customers in the region while combining competitive manufacturing with Domel's established engineering and quality standards.

The 441 ALU is available in two standard versions:

• 900 W version for applications requiring higher suction performance
• 750 W high-efficiency version, reaching efficiency of up to 45%, with lower energy consumption and a lifetime exceeding 700 hours

Both versions operate at 220–230 VAC, while lower-power variants can also be developed according to specific customer requirements.

Proven Reliability

The standard 441 ALU offers a lifetime of more than 600 hours, while the high-efficiency 750 W version exceeds 700 hours.

Combined with Domel's European engineering expertise and localized manufacturing capabilities, aluminium winding provides a proven alternative for customers looking to reduce their dependence on copper without compromising reliability.

With aluminium winding solutions available in Europe and China, Domel can support customers across different markets with locally manufactured solutions.

Less copper. Proven performance. Local solutions.

Contact

For more information about the 441 ALU vacuum motor and other Domel vacuum motor solutions, please contact Ms. Teja Bertoncelj at teja.bertoncelj@domel.com.

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