Living in Australia where the power supply is nominally 240V 50Hz I have known people over the years who have bought power tools while in the USA where most power is 110V 60HZ.
A simple transformer will convert the 240AC to 110AC easily enough but won't change the Hz so an electric motor designed to use 60Hz power when run on 50Hz power will usually not run optimally, it will either not develop it's rated power or it will overheat or both. I dunno whether electrical theory supports this but that is my experience.
Regards,
BH.