PROBLEM TO FIND STEPPER DATA

I´m having problems to find datasheet about a stepper from Sinano Electric. First the web site is all in japanese. I had tried others sources of info´s, but no sucess.

Please, if anyone knows anything, please contact.

Leonardo

THE MODEL:

Sorry, the model is
4H4009S-4147
500867-000
Sinano-Electric
56A

That´s all info over the stepper.
Thanks