Hi metengr,
Thanks for spending some time on my question.
This process is used for a connection to a shaft in contact with a bearing. I hope to receive first-hand information from the supplier, for the moment based on the few comments I was able to collect the process should involve a "stylus" that is pressed on the surface reducing both peaks and valleys and introducing compressive stresses. It seems a smart way to improve the surface quality but I would like to know more about its cost and limitations.