Description of the main components

The drive system is built up of four units:

1. The Power Unit which delivers oil to the system.
2. The Piston Assembly which transforms the oil flow to a linear movement of a roller set.
3. The Cam Elements which together with the piston assemblies roller sets transform the pistons linear movement to a directed movement.
4. The Electronic Unit which controls the system.

Operation principals

1. The Power Unit supply oil, or other hydraulic media, to the Piston Assemblies. The installed power, corresponding to the amount of oil and the pressure capacity provided, is chosen to give the drive unit the force and speed needed.
2. The Piston Assemblies are connected together in numbers and sizes to form a unit, which together with the numbers and sizes of cam elements will generate the force and speed needed for the application.
3. The Cam elements are connected together to form a ring or a bar depending on the type of drive system.
4. The Valve on each Piston Assembly open to high pressure when the pistons are at the top position of the cam elements and to low pressure when the pistons are at the bottom of the cam elements.

For sophisticated drive systems, the valves are controlled by an electronic unit designed to make drive systems working in parallel, having differential speed, differential torque, starting ramps, stopping ramps, etc.