Much like a typical welded hydraulic cylinder, telescopic cylinders come in single-acting or double-acting configurations. The main difference when comparing regular hydraulic cylinders to telescopic cylinders is that they provide an exceptionally long extension stroke, with a shorter retraction stroke. This is ideal for a lot of equipment that needs high degrees of maneuverability, such as construction equipment.
A single acting telescopic cylinder is ideal for load bearing cylinders that can use gravity or other natural forces for the return stroke. One of the leading examples of this is a dump truck. Since the weight is constantly on the cylinder, the truck is able to use hydraulics to move up the bed, then the weight of the truck’s body to retract it back. Dump trucks can also use a double acting telescopic cylinder, but that is mainly utilized to center the trucks weight while the telescopic cylinder is fully extended.
With many similarities to the single acting telescopic cylinder, the double acting telescopic cylinder uses the same design, but with applies hydraulic force in the extension stroke and return stroke of the cylinder. This allows for more control of the equipment, and is utilized when you are not able to use gravity or other forces to retract the cylinder. Common uses of double acting telescopic cylinders include construction equipment like cranes and bulldozers, or refuse vehicles when compacting and maneuvering waste in the truck.
To learn more about our extensive selection of telescopic cylinders, or to request a free quote, contact us today at 800 737 8988, or visit our website.