The line frequency tends to screw with things with motors too. Moved from the US to Belgium back when compact cassette was a common format for music.

Killed a few tapes with a transformer on a US tape deck before buying a 220V 50Hz unit. No, I don’t remember if the pitch was grossly off, but I’m guessing it wasn’t.

Of course you can. That's kind of obvious. It is also highly impractical. Besides the frequency delta you end up having to lug a heavy transformer along and then you have to alternate it across your tools so you don't end up frying the transformer.