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strong electromagnets that repel each other? Answered

I have two electromagnets already but they aren't strong enough to really push each other. I've read mixed things online about electromagnets that repel being very weak. I would like to build something like a shock absorber with a electromagnet at each end so when their is a load on the shock absorber the electromagnet can push back and stiffen. Any ideas on this would be awesome, i've spent a lot of hours researching online already but cant seem to find good info. 

Thanks

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Sounder242 (author)2018-02-17

Im also do a same project and i want to know information about repel distance gap between the two ekectro magnet?
Electromagnet detail
Model no is M52172
Diameter 25mm
Thickness 20mm
Holding force 11.5kg
Works with 12v/24v DC

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Jan_Henrik (author)2014-06-22

Can you post some pictures of the Magnets and more data please, I would like to know the Voltage and current, also if you use a Ferrit core or not... :)

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chrisack (author)Jan_Henrik2014-06-23

Two DC electromagnets, the specs are:

5.5 lbs of lifting force

12vdc, 3 watts continuous duty

Im not sure of the core?

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Jan_Henrik (author)chrisack2014-06-24

Okay, interresting. These looke kind of strong... If they arent strong enought, the use neodym magnets, they are very strong!

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tanyutsharma (author)2014-06-23

You can attach a very strong permanent magnet at one end and make a electromagnet at the other. The power necessary for the electromagnet will be minimised by this.

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chrisack (author)2014-06-22

Is it even possible to make two electromagnets repel each other from a 1/2 inch distance gap between the two?

Thanks

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rickharris (author)chrisack2014-06-23

yes - in principle. see my other post - current, core and distance all effect the repultion

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rickharris (author)2014-06-22

You will actually get a better result from neodymium permanent magnets. Much greater flux density.

To increase the efficiency of th electromagnets you need a good iron core, a healthy winding of wire, as much current flowing as the wire will stand and a minimal gap between the magnets. All these things effect the strength of the magnetic field.

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