One more thing is that if the motor draws high amp,issues to be considered are
1. Bearing magnetized and stall caused by induction current
2. Current go ground through the bearing
Both problem can be prevented by using insulated bearing.
Please check the bearing condition after use, to see the...
When the bearing is magnetized, it will magnetize all metalic partical into it. That causes the damage the bearing. On the drage force, I don't think will be the problem since it still is rotatable. Bearing is magnetized normally when it is heated by eddy current heater, and has to be...
