Brushless DC motors for use in vacuum.

Scientific instrumentation applications and the use of brushless DC motors.

Maxon motor have released a Brushless DC motor suitable for use in ultra-high vacuum. The 22mm 24V brushless DC motor is unique in that it is an off-the-shelf solution for an application that traditionally requires high levels of customisation. The all stainless steel construction, SmCo magnet based brushless motor features very low outgassing and can be baked out at 240˚C. It is also vibration tested to MIL-STD810F. Scientific and vacuum applications for DC motors are extremely varied. An example being the Watt balance, a machine developed to compare masses with electrical values in a vacuum. Its purpose is to redefine the measure of a kilogram. In the past we have relied simply on a known set of platinum-iridium weights that have varied with one another over time. The Watt balance seeks to overcome this problem using Planck’s Constant to define the kilogram in terms of voltage and current. The vacuum capable motor has allowed scientists to build a 3-axis robot providing the necessary mass movements for the experiment.

Detailed information on the motor and the Watt balance will be released in a white paper in October 2015, available on the maxon motor website.

If you would like to receive a copy of the paper please email


The 3 axis robot featuring maxon motor brushless DC motor.


maxon EC22 motor – a diameter of 22mm provides 100 W of power.


maxon EPOS2 is a modular digital positioning controller.


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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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