On Sun, 2009-04-12 at 14:29 +0000, tom wrote: ... snip > I have a nice 400 Hz washing machine motor that does 17,000 rpm that I pulled > out of a dumpster, that I have been saving to pair up with a nice high speed > spindle. I have test run it on a Danfoss vfd and it was reasonably well > balanced at top speed. Like this: > > http://cgi.ebay.co.uk/Hoover-Washing-Machine-HNL-7146-Motor-and- > Brushes_W0QQitemZ190299650744QQcmdZViewItemQQptZUK_Home_Garden_Washing_Machines > _Dryers_Parts_Accessories_ET? > hash=item190299650744&_trksid=p3286.c0.m14&_trkparms=72:1686|66:2|65:12|39:1|24 > 0:1318 > > Has anyone ever used one of these with a vfd to power a high speed spindle? > > I wonder if Dirk's bearings would be able to handle the heat... > > Tom
These are three phase motors? Oops, I just noticed brushes mentioned in the ad, so this is a universal motor, I beleive a VFD would not work with this. An SCR controller like a KBIC type (plenty in the US, but apparently not in the UK) would work. Something like this maybe?: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=370185220141 I have wondered about vacuum cleaners as another source of high speed motors. They are brushed and noisy, but it seems that a lot of people throw their cleaners out when the belt breaks, so there are plenty of good ones available. I have seen some chatter about washing machine motors from Australia which are three phase out-runners. I've also noticed that some motorcycle alternators have the same out-runner layout. In case it might be useful, with eBay links, I paste the item number into the search box, then edit out everything but the item number to shorten the link. Using the item number from the above Hoover motor link, I got this: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=190299650744 ----------- Kirk http://www.wallacecompany.com/machine_shop/ ------------------------------------------------------------------------------ This SF.net email is sponsored by: High Quality Requirements in a Collaborative Environment. Download a free trial of Rational Requirements Composer Now! http://p.sf.net/sfu/www-ibm-com _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
