- #1
LilEngineer
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I'm just designing a simple magnetic clutch that i can can alter the Break-away force by changing the air gap between the two diametric magnets.
I guess I'm having a hard time understanding the practical difference between flux density, field strength and Force at a given distance of magnets… and how i apply the figures to my design.
As far as i understand, the flux density is measured from the cross sectional area through the magnet, and so an N52 will have a higher flux density than an N28 for neodymium magnets… but this is just relevant inside if the magnet.
However, when i look at data sheets for these magnets, the N28 appears to generate a greater force Fr for a given distance S than an Equivalent N52 magnet.
So if i want the strongest magnetic coupling and so the highest Break-away toque, am i right in saying that i should use N28 magnets?
thanks
I guess I'm having a hard time understanding the practical difference between flux density, field strength and Force at a given distance of magnets… and how i apply the figures to my design.
As far as i understand, the flux density is measured from the cross sectional area through the magnet, and so an N52 will have a higher flux density than an N28 for neodymium magnets… but this is just relevant inside if the magnet.
However, when i look at data sheets for these magnets, the N28 appears to generate a greater force Fr for a given distance S than an Equivalent N52 magnet.
So if i want the strongest magnetic coupling and so the highest Break-away toque, am i right in saying that i should use N28 magnets?
thanks