I havent used brushless motors on a machine yet, but i have been using them on model airplanes for about a year now and they run great.
It sounds like a good idea to put them on a cnc mill for hs spindle. the first brusless i bought was a year ago and i still use it about 2-3 times a week at the local park. after a 15-17min flght, the motors do become pretty warm. I'm only using 300 sized motors and they run at full power for most of the flight. Ive seen 600 size brushless motor used in large helicopters, these are the ones I would recomend. One concern would be the motor case, i know for a fact that some of the cases are made of carbon fiber, and if the motor is run for say 12 hours im sure the heat for defiinitly burn the epoxy in it. another concern is the controler, there motors have three leads, so you would need to build/buy a controller (maybe varialble speed). you wont be able to use an RC brushless controller they are ment to be hooked up to a reciever. hope this helps
Mike G |