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EA Magnetics - Magnetic Case Studies

EA Magnetics - Product Information APPLICATION CASE STUDIES
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	CASE STUDY: Pertains to: Ceramic / Sintered Hard Ferrite Parts & Magnetic Assemblies Download this case study as a PDF - EAM-Case-Study-002.pdf - 531Kb EAM Causes Quite a Stir . . . For a Laboratory Equipment Manufacturer
	Our magnets get around...	Technology that other vendors couldn't supply was developed by EAM. Here's what we did to provide the solution... A major laboratory equipment manufacturer in the northeast wanted to improve their line of magnetically driven lab stirring equipment. This type of stirring machinery is highly desirable because it allows the liquid to remain completely sterile as magnets alone are used to drive the Teflon® coated stir bar during the mixing process.
	This manufacturer wanted to have the greatest possible coupling strength between the magnet and stir bar - even at high speeds through a viscous (5000 Centistokes) fluid. The coupling also had to resist high temperatures because these particular mixers were to work in conjunction with a hot plate. EAM designers obtained several samples of the mixers and went to work. Using empirical testing and finite element analysis, the EAM team determined the best shape and material combination to withstand the high temperatures of the application and meet the strong coupling strength criteria - all while keeping costs at the reasonable levels requested by the customer! Eventually EAM designed a round ceramic ring assembly with a small inner diameter and a specific magnetic pattern imprint - lining up the peak poles of the magnet with those of the stir bar. The base of the assembly was designed to reduce wobbling at high speeds. The EAM design was a complete success, as our magnetic coupling was able to hit 184 RPM through a honey-like fluid! The nearest competitor's design was able to reach only 76 RPM under similar conditions. The manufacturer was so pleased that they put us in contact with their customer, for whom we were able to design an even more powerful stirring machine driven with rare earth magnets. The coupling EAM designed in this application has enabled the customer to produce one of the most powerful magnetically driven lab stirrers on the market today!

	Time to rethink things? Our application experts routinely re-examine and re-design parts that can make all of the difference, in production, after-sale reliability and your bottom line. Contact us with your requirements!

EA Magnetics supplies magnets and magnetic assemblies to OEMs in all types of industries. Alnico, bonded ferrite, ceramic magnets, flexible magnets and magnet components for electronics and actuating devices. Our manufacturing capabilities include advanced magnetic modeling and characterization software to provide optimal support and engineering for sintered rare earth magnets, injection molded magnetic assemblies, rare earth magnets, samarium cobalt magnets, and technical magnets for all requirements.

Eneflux Armtek Magnetics, Inc - 700 Hicksville Road - Unit 110 - Bethpage, NY 11714-3496 USA
Toll-Free (800) 2ARMTEK - (800) 227-6835 - Tel: (215) 504-1000 - Fax: (215) 504-1001 · info@EAMagnetics.com

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