It seems to be 5hp 20-1600 rpm and universal if it comes with the overarrm etc and head. A typical cooking milling machine as far as I am concerned. The sort of thing I have seen lots of in several large toolrooms. A toolroom might have something smaller and faster about if they need it. I have seen Thiels and Deckels around and more recently a larger high speed machine who's name I unfortunately can't remember – not that I would ever have space for one. It was exceedingly heavily built and capable of high speeds.
I understand a 2 speed motor Bridgeport can reach getting on for 5,000 rpm. As far as low diameter carbide cutters go that just means a higher feed rate can be used. Carbide cutters do not have to be run at maximum speeds. I have seen one used for heavy work, a drop forge die sinker working from "home". He was for ever scraping the horizontal slide that carried the head to retain the machines accuracy and getting a bit cheesed off about it.
John
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Edited By John W1 on 12/12/2015 10:48:23