maxon increases choice within brushless DC motor range
Ever responsive to designers’ changing needs, maxon motor has added three extra motors to its range of brushless (electronically commutated) DC micro drives. The new 10 and 13 mm diameter units – the latter available in two different lengths to suit different shapes of equipment – expand customer choice within a crucial part of the size spectrum.
Keith Ellenden, CEO of maxon motor uk, explains: “The demand for EC (electronically commutated) micro motors is growing all the time – while the spaces in which designers want to fit them are becoming smaller. Our EC range already goes from 60 mm right down to 6 mm, but for many applications the very smallest units are simply not powerful enough. At 10 and 13 mm we can supply plenty of power without increasing the motor’s dimensions too much.”
The figures speak for themselves: maxon’s EC 10 gives an output of 8 watts and reaches a maximum permissible speed of 80,000 revolutions per minute; the short version of the EC 13 has an assigned power rating of 6 watts, while the longer one offers 12, and both will deliver a maximum permissible speed of 50,000 revs per minute.
To generate the highest possible torque in the tightest of spaces maxon uses NdFeB magnetic material in the rotors. To maximise precision and load capacity, the motors are pre-loaded with ball bearings.
It’s easy to see why more and more people are turning to the option of brushless motors, given their efficiency, power to weight ratios, high speeds and virtually unlimited, maintenance-free service life.
Each of maxon’s EC motors can be ordered with or without Hall sensors. Their tried and tested flexprint connectors allow easy and secure connection to any of maxon’s controllers, creating intelligent, highly dynamic systems for precise speed or positional control.
If lower speeds but higher torques are required, each motor can be combined with a choice of appropriate and totally compatible planetary maxon gearheads, using maxon’s modular system. The resulting combination of motor and gearhead is also remarkably compact.
The new motors are well matched to a diversity of applications. An interesting example is in seismic instruments designed to sense and respond to the slightest earth movements. As well as instrumentation, textile processing machinery, fitting machines and portable hand tools, there is huge potential for these motors in the field of medical technology.
In one clever development, a maxon EC motor is used to position the ‘leaves’ that form the iris of a radiation treatment machine. A hundred or more of these leaves are positioned perfectly, according to the exact shape of the malignant growth, so that the cancer is irradiated while the surrounding healthy tissue is protected.
For further information on maxon’s products and services, contact maxon motor uk ltd, Maxon House, Hogwood Lane, Finchampstead, Berks, RG40 4QW. Tel: 01189 733337. Fax: 01189 737472.
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