Magnetic bases - how do they work?

Bex50 · Dec 9, 2013

Relatively new to forums but from what I can gather there are a lot of knowledgeable people out there who may have the answer to my question!

I have a switch-able magnetic base for a dial indicator (iv seen them with a push button too) and I'm curious as to how they actually work?? Has anyone dismantled one and had a peak inside? or have the knowledge of this type of magnets and their workings??

Thanks
Bex

ciladog · Dec 9, 2013

It's quite simple. There are two ferrous plates separated by a non-ferrous (non-magnetic) spacer. In the center there is a bore running through all three plates and in the bore is a permanent magnet. When the poles of the magnet (north and south) are lined up with the non-ferrous spacer, the magnet is off. When the magnet is rotated so the poles line up with the ferrous plates, the magnetic base is on.

Bex50 · Dec 9, 2013

Thanks for the speedy response!

that now makes sense!

I'm desperately trying to educate myself on everything dial indicator based for a project!

niemi24s · Dec 10, 2013

A Google search led me to this and a better understanding of the verbal description: http://upload.wikimedia.org/wikiped...ase_ON.svg/200px-Wiki_MagneticBase_ON.svg.png 1 picture = 10³ words.

Regards

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Magnetic bases - how do they work?

Bex50

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ciladog

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Bex50

Plastic

niemi24s

Aluminum

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