[Willway]

As Mike has said 50hz power is not a problem with 'Universal motor' power tools. Universal motors are those with brushes, which includes vacuum cleaners. They can actually be ran on DC power a little more efficiently.

 

[Willway]

" ...Especially with electronic components like speed control and soft start?"
Dick, as I mentioned in my last post (ships that pass in the night) I was speaking to the electronics aspect of some power tools, not the vacuum cleaner.

Dan at the point of the electronics (soft start and speed control) the AC is converted to DC, so the frequency of the supply has nothing to do with it. I was speaking to all motors that use brushes.