THE BEST SIDE OF TRANSFORMER 230V TO 120V

Hi I really need to convert a sani-grinder in the US working on 60Hz to operate on 50Hz in Japan. Will this merchandise be what I need? What is the expense?Ordered transformers to use on our industrial tools programs due to current market shortages for our typical stepdown transformers.It's got an ON/OFF swap using an indicator lamp. There are 2 re