Power Jacks Power Jacks is a leading manufacturer for precision linear actuation, power transmission and mechanical jacking products. The company is based in Scotland where its history for supplying high-quality engineered products dates from 1903. The product ranges are detailed on the company's website and include screw jacks, electric linear actuators, mechanical jacks, bevel gearboxes, planetary roller screws, reduction gearboxes, winches and rotary unions. They can be supplied worldwide singularly or as complete systems, whether in standard or specially engineered designs.