Muti-jack Systems Arrangement are comprised of several screw jacks linked together by drive shafts, couplings and bevel gearboxes. In order to know if a screw jack system could be a solution for your application, you will need to consider which type of screw jack to select. There are worm gear screw jacks, bevel gear screw jacks and ball screw jacks, and each has several different options and configurations. This modular style of connection is extremely flexible as design engineers can customise a system to suit their needs – including different lifting actions, travel speeds, and load capacity. Where there are multiple jacks forming part of a complete system, calculate the total input power for the system, including losses in couplings and gear boxes, using the following efficiency: 2-jacks 95%, 3-jacks 90%, 4-jacks 85%, 5-jacks 80%, and angular gearbox 90%.