Wiz -Thanks for the info. Injecting some reality into my purchase..
I see a posting of yours from 2015 that said "Also, sump pump oiled machines need to spin at over 2500 rpm to deliver the oil to the extremities. That is the bottom speed required for proper oiling. Most of the time, they are operated at 5000+ rpm."
So this machine sounds kind of contradictory... I high speed machine with a servo? It was the H for heavy and the Servo that made me bid on it...
Different topic... Three weeks ago I was in Lancaster PA for an Amish Harness Maker's auction. He had two Juki 441 clones, one a SewPro, that looked like it was driven by a compressor? Hadn't seen that before... They also had a Landis 16 that sold for $150