Re: [CAD_CAM_EDM_DRO] Re:Do stepper motors get old?

I have found, after collecting many 2nd stepper motors, that some(all
disconnected) are very free to turn, while others present a hard cogging.
But I'm not sure if they have different internal designs that make them so,
or if they're basically worn out. Like many products, the stickers offered
precious little info on the sticker, so I could'nt look them up.

Roland



2010/1/13 Neil Gillies <neil@...>

>
>
> Hi Brian
>
> In my real job, I regularly have to replace steppers that are about 5 years
> or older.
> As the salesman says, the magnets get weak and the motors start to
> cavitate.
> We mostly use size 23 compumotors and run pretty much 24/7, so 10 years of
> intermittent use would be about right.
> Modern motors with rare-earth magnets __seem__ to last a wee bit longer.
>
> I'm pretty sure it's got nothing to do with your old Mac operating system
> 'though LOL :-)
>
> Best regards from sunny Scotland.
>
> Neil
>
> __________________________________________________________
>
> Neil D. Gillies Tel: +44 (0)1383-823489
> iGull.co.uk
> 11 River View neil@... <neil%40igull.co.uk>
> Dalgety Bay, Fife http://www.igull.co.uk
> Scotland KY11 9YE
>
>
>

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