High speed DC motor – Tips and tricks.

Brushless high speed DC motor with modifications for easy load assembly.

Press fitting is the most common method customers use to assemble loads and drive elements to the motor shaft in production environments. Especially if the application requires the use of a high speed DC motor. Whilst machining the motor shaft with a flat and using set screws to secure the drive element to the motor shaft is very common for small quantities, or low speed applications, high speed applications often require a more balanced solution. The higher the speed and acceleration requirements of the motor, the higher the required strength for this affixation and so increases the press fit force. It is here that many high speed motor manufacturers let down their customers with a very simple omission; access to the rear shaft of the motor. Without this simple feature, customers press fitting onto the motor shaft with the required force for high speeds, often need to exert more force than the bearing system of the motor can withstand. This process in turn causes micro damage to the balls within the bearing system reducing the lifespan of the motor. The motor pictured in this example is a 25mm 250w high speed brushless DC motor with the ability to accelerate to 62,200rpm in 2.32ms. For this example the motor has been manufactured with a pilot hole in the rear cover allowing support of the shaft for the pressing process. The motors drive shaft end has also been manufactured with a tolerance to match the load bore and a shoulder to locate the end travel in the pressing process.

Contact maxon motor Australia for high speed DC motor applications and adaptation. Ph:+61 2 9457 7477.


High speed DC 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

2 responses to “High speed DC motor – Tips and tricks.”

  1. Jake White says :

    I have been collecting motors for decades, as it’s kind of a hobby of mine. I am always reading about motors, and this article has really good information. Typically press fitting is for sure the most common method to assemble loads and drive elements to the motor shaft. Thanks for sharing!

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