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Cylinder, Telescoping, Double Acting

A hydro mechanical device, usually a cylindrical chamber, with one closed end and a telescoping movable shaft at the other end.
When fluid flow is applied to a port in the closed end, the telescoping shaft extends until all collars or pistons reach their limit.
When fluid is applied to the shaft end port, the shaft will retract into the chamber until all the pistons or collars reach their closed end limits.
The cylinder will produce an output force at the shaft end in proportion to its internal area multiplied times the pressure potential of the fluid power system.