Actually there is one right here in Ab., Blackfalds to be exact. I'm going from memory here as its been 5 or 6 yrs since I was in his shop, Has a rotary table that must be 20 ft wide and a head travel 20 or 30 ft up & down from the table and the column/head can travers 40 or 50 ft from the table. The table has a small movement ability if I remember right but most of the adjustable movement to accommodate very large work pieces is accomplished by moving the column...That's his "big mill", he has 2 of what he calls his "small mills" as well...One of them had a complete D8 track frame (rollers & front idler complete) mounted on the table the day I was there.
Now for his "biggest machine". He has lathe that the bed is about 65 ft long, the chuck is 8-10 ft in dia., the tailstock is 8 ft high & wide & the "center" is 3 ft in dia., Kerry told me the HP of the electic motor but I for get now what it was but size-wise it was a least 6 ft in dia and at least that long (hate to even pay the "start-up power bill" for it). The day I was there he had a turbine shaft from some power generating station chucked up in it. It was about 40 ft long & at least 36 " in dia ( I think he said it weighed 180,000 lbs.).
He imported both machines "used" from Germany ( the company there was having "bigger" machines installed). He knows of two other shops in N.A. that have as big machines, one in Cincinnati and the other in California.
