Re: Why do stepper motors lose their magnetism when disassembled?

Seems odd that they would demagnetize so easily. Can't argue with
fact but I have successfully taken a stepper apart and am currently
using it without any noticeable degradation (I have two other
identical motors in the machine so comparison is easy). Also when
the rotor with the permanent magnetization sits in a working stepper
it is in a maelstrom of fluctuating and reversing magnetic fields, a
situation in which a permanent magnet with low retentivity would
wither and die. The physics would be interesting to ponder.

Mike