On 15 Nov 2004 08:26:06 -0500 Sam Goldwasser
wrote:

Jim Adney writes:

So, to get back to my question: Has anyone ever seen an
electromagnetic failure in a squirrel cage rotor? Does it EVER happen?

I have a bench grinder that seems to have such a fault. I have eliminated
mechanical causes as best I can and it still intermittently stops and
hums loudly when the rotor gets hot.

Do you have access to a growler? If so, I wonder if you could remove
the rotor and check it cold and then again after warming in an oven.
Might a simple physical inspection reveal something, perhaps even
something that could be fixed.

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Jim Adney
Madison, WI 53711 USA
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