Motor of the week – Rare Earth 25mm brushed DC

Two DC motor and gearhead customer deliveries this week that showcase the size reductions of new technology in motors and gearheads.

Pictured here are two examples of the maxon DC brushed motor fitted with a planetary gearbox. For comparison we have shown both the new and old version of a gearbox and the new and old version of a DC motor. Figure 1. depicts the older model 42mm gearhead in combination with a 35mm DC motor and beside is the new gearhead with the same reduction ratio. It is easy to see just how much shorter the new planetary gearhead is, in fact it represents a length reduction in this case of 45.4mm. On top of this the new gearbox is 260g lighter and also stronger. Figure 2. Showcases the old and new version of the 25mm Rare Earth brushed DC motor, the RE25. The new RE25 motor is fitted with a 32mm ceramic planetary gearbox and the old RE25 motor is shown by itself. Both the old and new DC motor are rated at 20W, however the new motor is 11.5mm shorter. New materials including ceramics, high grade magnets and winding technologies are to thank. For planetary gearheads in particular, ceramic materials have greatly improved the wear characteristics of the moving parts allowing higher speeds, higher torque transmissions and improved lifespan. For brushed DC motors it is the combination if high grade NdFeB magnets and the ironless rhombic winding structure that give a DC motor with no magnetic detent cogging and very dynamic performance. Winding angles, sintering methods, magnetic return material and brush composition are just some of the many constantly improving aspects of maxon DC motors. Over 8% of maxon motor revenue is funnelled into motor, gearbox and controller research and development. The motor and gearbox improvements shown here are clear example of maxon motor innovation and why they continue to release smaller and stronger DC mini and micro motors every year.

Contact maxon motor Australia in our Sydney office for further assistance Ph:+61 2 9476 4777

Figure 1. 42mm gear-box and motor old v’s new

Figure 1. 42mm gear-box and motor old v’s new

Figure 2. 25mm diam-eter DC motor and gearhead old v’s new

Figure 2. 25mm diameter DC motor and gearhead old v’s new

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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. www.maxonmotor.com.au

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