Being employed by either an engineering or industrial company, chances are that you will be quite familiar with mechanical engineering formulas with which to calculate motion control.  You will also agree with the fact that mechanical calculations form an integral part to size a servo system.  However, this is only one of several mechanical engineering formulas used within the engineering and industrial industries.  Mechanical engineering formulas with which motion control is calculated serve only as a general guidance though.  They need to be refined in order to also take into account elements that are specific to each unique element, including the number of cycles and mechanical losses.  If you were to contact a reputable supplier of industrial applications like EP Normand though, you will be able to find more information on how to properly size specific applications.