DC Motor of the week – 12th August

Brushless DC motor for geotechnical instrumentation application with modifications to the motor shaft, bearing system and a custom connector configuration.

This 250W 36V brushless DC servomotor is normally supplied in an IP54 configuration that includes 550mm cables for the 3 motor windings, hall sensors and encoder signals. The cables pass through rubber grommets on the rear alloy housing. The ball bearings on the motor as standard have IP54 stainless steel shields. This brushless DC motor form of supply has proven itself robust and reliable for many years however when you need to use a motor in the harsh conditions of an Australian coal mine, further precautions are often necessary. In this instance the motors front bearing has been replaced with an IP66 sealed bearing with relatively low running resistance, such that the brushless motors performance is minimally changed. The motors high torque capability of over 300mNm continuously and 3.3Nm of stall in reality mean the added bearing friction does not even result in a calculable current increase, because the motor in the application is constantly overcoming high and fluctuating loads. This is one of the many “in theory – not practice” scenarios that often occurs with motor applications where drastic extremes of temperature and load are often unpredictable. The DC motor is also fitted with mil spec connectors. Even though all the connector pins are not required the unused locations are still fitted with their gold pins. This ensures that all motor phases and hall sensor feedback lines maintain the IP65 rating of the connector. The end result is a customised IP65+ DC motor suitable for mining applications that exhibits high performance and ruggedness with a minimal overhead.

Contact maxon motor Australia in our Sydney office for assistance with getting a motor right for your application.

© 2013 by maxon motor Australia


Ø45 mm brushless DC 250w 36V motor

Ø45 mm brushless DC 250w 36V motor



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. www.maxonmotor.com.au

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