01/24/2016 11:55 PM, Gene Heskett rašė: > On Sunday 24 January 2016 16:30:45 Marius Alksnys wrote: > >> 01/24/2016 04:37 PM, Dave Cole rašė: >>> Is the positioning ability adequate? >> >> I am impressed how strong it holds in position even when fed with DC >> current (freq = 0). I can't force it to rotate by hand, while it is >> very easy rotating while turned off. > > That motors rotor has to be offcenter enough to drag under dc exitation, > whereas it should move like it was full of cold molasses. Call a > surveyer slow, but dead smooth. > > As that raises the spot heat from friction at low speeds, I'd want to > have a spare on the shelf in case it self destructs.
Sorry Gene, it is hard for me understand almost all of your posts without dictionary and deeper analysis of your words.. It might be because my mother language is Lithuanian, my English technical is ~ ok, but your posts are full of colorful English.. :) This spindle rotates at 10kRPM nicely, thus I have no doubts it is in good balance. I think heavy magnetic field holds the magnetized rotor almost in place when I turn 10A DC current on. ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=267308311&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
