Hydraulic cylinders can indeed push and pull loads. Double-acting cylinders, in particular, are designed for both pushing and pulling, utilizing two fluid ports to extend and retract the piston rod. 

Here’s a breakdown:

• Pushing:When hydraulic fluid is pumped into one end of the cylinder, it extends the piston rod, exerting a pushing force. 
• Pulling:When hydraulic fluid is pumped into the opposite end of the cylinder, it retracts the piston rod, exerting a pulling force. 
• Double-acting cylindersare versatile, allowing for both push and pull operations. 
• Single-acting cylinderstypically extend the piston rod using hydraulic pressure but rely on a spring or external force for retraction. 
• Force differences:While both push and pull actions are possible, the force exerted during retraction (pulling) may be less due to the reduced area of the piston rod side.