Hey guys, we bought this Series II BP new in 2002. It's variable speed with soft start, HC ways, ballscrews and has been a great mill. Lately, the motor seems to slow down when taking more than a light to medium cut(even on 6061AL). We just finished going through the head to see if it could be something mechanical like a belt or sheared key, etc. While we were in there, we replaced a few bearings and bushings but didn't find anything odd. As I suspected, we got it back together and turned it on. It sounds nice a smooth but I can slow the machine down by grasping the spindle with my hand. I can't stop it but can slow it down.
Any thoughts appreciated.
Any thoughts appreciated.