"Ned Simmons" wrote in message
...
On Tue, 15 Jul 2008 11:12:45 -0700 (PDT), rashid111
wrote:



When I do heavy milling that this motor/mill was never designed
for , the exterior gets hot to the touch.

Look at the chart on this page before you get too concerned. "Hot to
the touch" is not necessarily anything to worry about. Good DC motors
are usually class F or H.

http://www.engineeringtoolbox.com/ne...ses-d_734.html

Would motor efficiency (and speed control) be improved by keeping it cooler?

Bob La Londe
www.YumaBassMan.com