Re: [CAD_CAM_EDM_DRO] Re: Jan....opening steppers can......

At 01:02 AM 5/28/02 -0000, you wrote:

>Do not open a step motor. Especially do not remove the rotor from the
>stator. The stator acts as a "keeper" for the rotor magnets, removing
>the stator will de-magnetize it

If this were true the maggies would lose their strength while waiting for
initial asm. Keepers indeed preserve magnetic strength, but w/o them the
loss is still very slow.

and thereafter the motor will be a

>drive killer because the inductance will be very low.

I'd think the inductance has nothing to do with the maggies.

>Another reason is unless you have a clean room enviroment, the rotor
>magnet will find that microscopic steel chip (chips) on your bench

Now that's a lot better!! I'm not reco-ing anyone break his steppers down,
but a few sheets of newspaper to work over would cure that problem.

Regards, Hoyt


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