There was one of these where I once worked a few years ago. It was apretty good machine. No major problems and was reliable. The biggest issue which comes to mind was the lube oil feed lines - on this mill, they must have used the wrong tubing because it reacted with the slideway oil and fell apart literally. Was a time consuming job to re-route all the lines, but it had to be done. Other than that, the hydraulic unit would trip out sometimes - Power off then on to clear it. They never got to the bottom of that one. Sometimes the pallet would stay up after indexing as well.
It took some mighty hits in the time I was there but seemed to maintain it's accuracy.
Overall an ok machine.