CAD CAM EDM DRO - Yahoo Group Archive

RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled?

on 2008-12-13 11:28:58 UTC
> 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).

I'll happily swap you for one of mine taken apart in a moment of
curiosity. It still steps, but with NOTICEABLY less torque and
gets CONSIDERABLY hotter doing it.


I'll also throw in an old mag chuck (eBay madness) that was SEIZED
solid in the "on" position. A week in a bucket of solvent didn't
help, so apart it came. Cleaned the solidified .. grease, I assume ..
lubed a bit, reassembled and it's now permanently in the "off"
position.

Apparently, everyone except me knew this would be the result, for the
same reason steppers fail when disassembled .. something about breaking
the magnetic field.


Alan

Discussion Thread

Alan Rothenbush 2008-12-13 11:28:58 UTC RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? gcode fi (hanermo) 2008-12-13 12:22:40 UTC Re: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? Leslie Newell 2008-12-13 13:28:40 UTC Re: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? John Dammeyer 2008-12-13 16:34:25 UTC RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? William Bright 2008-12-13 21:51:15 UTC Re: Why do stepper motors lose their magnetism when disassembled? andrey@e... 2008-12-14 16:04:31 UTC RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? optics22000 2008-12-14 19:35:12 UTC Re: Why do stepper motors lose their magnetism when disassembled? David G. LeVine 2008-12-26 19:54:23 UTC Re: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? danmauch 2008-12-27 06:59:34 UTC Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? David Speck 2008-12-27 08:09:03 UTC Re: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? JCullins 2008-12-27 08:45:40 UTC RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? danmauch 2008-12-27 08:59:25 UTC Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ? Dave Fisher 2008-12-27 18:09:37 UTC RE: [CAD_CAM_EDM_DRO] Re: Why do stepper motors lose their magnetism when disassembled? and a dc treadmill motor ?