Power Jacks Power Jacks, Lifting & positioning solutions, lifting, positioning, Screw Jacks, Screw Jack, Electric linear actuator, linear actuator, electro-mechanical actuator, mechanical actuator, bevel gearbox, bevel gearboxes, gearboxes, power transmission, mechanical jacking, jacking, planetary roller screws, roller screw, screw jack system, electric actuator Power Jacks is a leading manufacturer and largest in UK for precision screw jacks, linear actuation, power transmission and mechanical jacking.