Anyone have an idea how much calculated spindle hp is available with a Tormach 440?
I am asking because I ran into a problem with the spindle slowing and stopping when running a job with only about .20 calculated HP. Speed 4500, .5" 3flute HSS EM, FPT=.001, DOC .424, Optimal Load (WOC) .075". That calculates to approx .20 HP, much below the HP of the motor. Wondering if I have a motor/controller issue.