Tiny DC motors drive high-speed pipettes

With the aid of maxon’s small, powerful brushed DC motors, Intellepro has developed an innovative compact multi probe pipette system to speed up research.

The new pipette system is 30% more effective than traditional pipette automation and will allow labs to process samples more quickly and efficiently than ever before.

While the concept is simple enough, several significant design challenges needed to be surmounted in order for the system to work in practice. One of the most important requirements was adequate motor thrust, enough to overcome pierceable foil and caps, while the device’s acceleration and deceleration speeds needed to be slow enough to prevent liquid from splattering.

maxon RE13 DC brushed motors were chosen to satisfy the size and torque requirements of the end product. The RE13 motors offer the user up to 2.8 mNm of torque. They also work within an ambient temperature range from -20 to 65 degrees C.

These moving coil motors, with Neodymium magnets, are particularly designed for long life, low electrical noise, and high efficiency.

Smoothness of operation and freedom from cogging was also critical to avoid impeding the motion of the pipette probe, leading to measuring errors. The RE13 DC motor’s ironless rotor design removes this issue, enabling the motor to be controlled easily and accurately.

The planetary gear reduction and encoders integral to the system allow the motors to facilitate excellent servo control and minimal backlash, resulting in high positioning accuracy and long life.

According to Don Rich, IntellePro’s project engineer, “Without the power and compactness of the maxon motors this product could not have been built.”



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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