maxon expands extreme motor range

Technical advances made by maxon motor while customising a brushless motor for operation in deep oil boreholes are to be rolled out in a new, heavy-duty motor range, designed for the harshest conditions on earth. and beyond.

Already widely used in fields as challenging as space, robotics and Formula 1, maxon accepted the challenge of creating a small motor reliable enough to operate at depths of 5,000m.

The resulting motor, maxon’s award-winning EC22 Heavy Duty, features important refinements to its rotor, winding, magnets and bearings; enabling it to survive temperatures as high as 240°C and operate happily at 200°C and atmospheric pressures from high vacuum to 1,700bar (25,000psi).

The project involved maxon constructing an entirely new testing laboratory, complete with extreme temperature facilities and vibration rigs. Here – and throughout extensive field trials – the 22mm motor was proven to perform despite vibration of up to 25grms, and resist impulse and impact forces of 100G: 50 times those undergone by maxon’s motors in jet fighters and Grand Prix cars.

Moreover, testing while fully submerged in oil revealed its initial 80-watt output rating in air could comfortably be trebled under such conditions, because of vastly improved heat dissipation.

Now, in response to requests from engineers, maxon will incorporate the same modifications into 16mm, 32mm and 42mm versions of the HD motor, covering a broader range of applications. with further developments promised in the near future.

maxon’s senior sales engineer Paul Williams oversaw development of the successful EC22 HD.

He explains: “A lot of engineers were already pushing our motors to the limits of their operating tolerances, so the EC22 HD has opened up new possibilities; not just in oil exploration, but all manner of fields where performance under extreme temperature, pressure or vibration is important.

“Around 50% of our motors include custom specification, and in this case that’s helped us to make real leaps forward in rotor technology and glue-less construction, as well as and other refinements.

“These new motors will make those capabilities available to a wider range of engineers, and will doubtless inform our mainstream production in the future.

“Of course, the story doesn’t stop there. Our challenge now is to go even further, broaden the range and hopefully push on towards 300°C!”


About maxon motor Australia

maxon motor is the world’s leading supplier of high-precision drive systems. More than 40 years’ experience, constant innovation, top-quality products and competent customer service make maxon motor a reliable partner in the drive technology sector. We are driven by your specific requirements. The product range incorporated in the modular system is comprehensive: Brushed and Brushless DC motors with the unique ironless maxon winding Flat motors with iron cores Planetary gears, spur gears and special gears Sensors (encoders, DC tachos, resolvers) Servo amplifiers, position controllers and control electronics High-tech CIM and MIM components Customer specific drive solutions. maxon motor is a Swiss company headquartered in Sachseln (Central Switzerland) that employs more than 2000 staff worldwide. With 14 sales companies based in over 30 countries, sales partners in another 10 countries and with six production sites, maxon motor are able to provide locally-based and competent customer service. maxon motor helps provide innovative solutions at competitive prices for numerous applications in various markets, such as Medical technology, Industrial automation and robotics, Aerospace industry, Automotive industry, Communication, Consumer applications, Inspection and Instrumentation and Safety engineering. maxon motor Australia is based in Mt Kuring-Gai NSW and our staff will be happy to help you with all your DC motor and technical enquiries.

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