Beefed up my cooling circuit a bit and continued breaking the spindle in last night. At 54,000, with the water being luke warm, the front of the spindle was again very hot, and the VFD read 60-80w. I briefely ran it up to 60k, and the VFD read 110w. Over a third of the rated power of the spindle just going into the bearings. I'll probably stick to 48k and under on this thing, as it really doesn't seem to be able to handle its rated speed.