Product category:
Precision Motors and Gears
News Release from: Unimatic Engineers | Subject: Penny-Motor range
Edited by the Engineeringtalk Editorial
Team on 18 September 2002
Ultra-flat micromotors and actuators
The latest products being offered by Unimatic may be tiny, but the company reckons their performance is truly astonishing.
The latest products being offered by Unimatic may be tiny, but the company reckons their performance is truly astonishing The Penny-Motor range of brushless micromotors and actuators provides high torque output, a very wide speed range and an extremely high maximum speed
This article was originally published on Engineeringtalk on 26 Apr 2000 at 8.00am (UK)
Related stories
XYZ tables lay down gaskets in diesel engines
Unimatic positioning tables are being used in computerised fluid dispensing systems to lay silicone gaskets onto oil coolers and blanking plates in Perkins diesel engines.
Linear bearings - from Pyramids to Levitation
A survey of linear bearings "From the Pyramids to Magnetic Levitation" by H G Stevens Chairman, Unimatic Engineers Ltd.
These remarkable tiny, ultra-flat motors have extensive applications as direct drives in scanners and ventilators or, via gear systems, in micro-pumps or high precision positioning systems in the medical, aerospace, automation, IT and entertainment industries.
In addition, actuator systems, based on the flat Penny Motor design, are also available.
The manufacture of Penny-Motors involves leading edge technology in every respect, from the cutting of all components to æm tolerances, high-precision non-friction bearings, high-performance neodymium-iron-boron permanent magnets, 'printed' motor windings and final assembly under clean-room conditions.
Further reading
Linear bushings for low cost applications
Unimatic is now stocking new low cost linear bushings that are suitable for use in a wide variety of industrial applications.
Controller helps form-in-place gasketing machines
Unimatic's versatile SM400 controller is being used in the latest generation of "form-in-place" gasketing machines from RFI Shielding.
The technique of producing the windings of the Penny-Motors by a photolithographic process, analogous to the production of semiconductors, allows the production of extremely flat motors.
The eight-pole brushless motors are also of very low weight, have no magnetic quiescent point because of the air-core coil and are very efficient, having exceedingly low eddy-current or hysteresis losses.
Motors are available for a wide range of voltages and, depending on the design and drive, can be used as frequency controlled synchronous, load-controlled asynchronous or self-commutated electronic motors.
Unimatic also supplies the specialist drives for the control of Penny-Motors.
For externally commutated motors, the drive provides an electronically generated rotary field with high precision speed control over the entire speed range.
For self-commutated motors, control is by magnetic Hall-effect field sensors capable of determining the actual rotor position very accurately at any time.
For each and every application, Unimatic will advise on the selection of the most appropriate motor/drive combination.
Systems are available 'tailor-made' with hollow shafts, extended shafts, modified shaft diameters, connectors and variations designed for specific applications.
Standard models have a maximum speed of 20,000rev/min, but special models can be produced for 60,000 or even 150,000rev/min.
The offer is completed with a broad range of precision gearboxes - planetary, micro-harmonic drive or helical gears.
In each case, high torque at the lowest volume is the result, with the incredibly low backlash prestressed gear types being ideal for positioning tasks.
The gearboxes can be directly combined as one housing with the Penny-Motors. Request a free brochure from Unimatic Engineers ...
• Unimatic Engineers: contact details and other news
• Email this article to a colleague
• Register for the free Engineeringtalk email newsletter
• Engineeringtalk Home Page
Search the Pro-Talk network of sites
