DC motor and gearhead – but not your standard selection.

Why would you select a spur gearhead over a more popular planetary design for a DC servo system? Answer: back drivability.

More often than not a DC gear motor specified for an application with even modest space constraints will utilise planetary gearboxes. The fact is there are simply more teeth in a smaller space to spread the load.

However, many high ratio planetary gearhead designs have floating stages that when back driven will give irregular feedback torque characteristics. Even in some cases with dynamic inputs the planetary gearmotor can jam. It is in this instance that a spur gearhead can be a better solution. It must be said that not any spur gearhead will work. The automation market is flooded with low cost spur gearhead products that are often of such low quality that they would not be recommended by maxon motor for power transmission in either direction although the unit pictured is an exception. This 45mm spur gearhead features a very robust all metal construction with large output bearings capable of up to 190N radial load and 60N of dynamic axial load. Reduction gearing efficiency of 87% and a hardened stainless steel shaft. The shaft in this instance has been modified with a transverse bore directly alongside a milled flat to suit the customers load affixation method. A 60W 30mm diameter motor is being used which in itself required the machining of specialised adaptor flanges. Custom modifications such as these particularly suit the diverse and changing requirements of the robotic and haptic control fields.

Contact maxon motor engineers to “spur” your robot into motion. +61 2 9476 4777




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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