CC,
It is a KMG belt grinder.
http://www.beaumontmetalworks.com/grinder.html
It is machined from steel and requires two men and a boy to lift it.
Unfortunately, they were nowhere to be found when I had to move it.
Some advice should you get one;
don't assemble it in the kitchen 30 feet from your work bench.
The last time I did something that foolish was when I bought my 18" bandsaw.
The store loaded it into my truck with a forklift, but when I arrived home, no forklift... I am positive the forklift was right behind me when I left the store.
So I unloaded it all by myself (not a recommended procedure).
I was surprised to learn that 346 lbs was that heavy.
Actually unloading it was rather easy once I had the center-of-gravity beyond my tailgate. You could say it almost unloaded itself.
I was disappointed to learn that Mr. Einstein's theory about "a mass at rest wanting to remain at rest" may not always hold true.
I do however agree with the one about a mass in motion.