There is a widespread push to replace hydraulic systems with electo-mechanical screw jack systems and for a number of good reasons. The trend has already been under way in Europe for some years and now it is moving to North America. Engineers are being tasked to “design out” hydraulic systems and “design in” screw jack systems for their pushing, pulling, lifting and holding application needs. When making any changeover, a number of important factors need to be considered to make sure the new design will work properly, efficiently, and provide reliability over the life of the system.