A double acting hydraulic cylinder

A double acting hydraulic cylinder

• A. Exerts Force In Two Directions At Once
• B. Can Exert Force In Either Direction
• C. Exerts Force Only In One Direction
• D. Has A Spring Return

Answer: (B)

Double-acting hydraulic cylinders generate force in either direction by applying hydraulic pressure to opposite sides of the piston. When fluid is pumped to the rear chamber, the piston extends; when fluid is pumped to the front chamber, the piston retracts. Only one side is pressurized at a time, so it doesn’t push in both directions simultaneously. This is what lets it work in both extending and retracting motions. A spring return is not what defines a double-acting cylinder, because some double-acting cylinders may use hydraulic pressure for both directions and may or may not include a spring return.

Double-acting hydraulic cylinders generate force in either direction by applying hydraulic pressure to opposite sides of the piston. When fluid is pumped to the rear chamber, the piston extends; when fluid is pumped to the front chamber, the piston retracts. Only one side is pressurized at a time, so it doesn’t push in both directions simultaneously. This is what lets it work in both extending and retracting motions. A spring return is not what defines a double-acting cylinder, because some double-acting cylinders may use hydraulic pressure for both directions and may or may not include a spring return.