How many hydraulic cylinders does the equipment use according to the schematic?

The equipment uses three double-acting hydraulic cylinders and one single-acting hydraulic cylinder according to the schematic. Double-acting cylinders are capable of exerting force in both directions—when hydraulic fluid is applied to one side, it moves in one direction, and applying it to the other side reverses that motion. This versatility allows for more complex movements and operations in hydraulic systems.

In contrast, a single-acting cylinder has a different mechanism where it can only exert force in one direction, relying on a spring or external force to return to its original position. The combination of both types of cylinders within the schematic suggests a design that maximizes efficiency and control, utilizing the strengths of each type to meet operational requirements.

Understanding the roles of each type of hydraulic cylinder reinforces an essential concept in hydraulic systems design, where the number and type of cylinders impact the functionality and performance of the equipment.