Which of the following is a potential advantage of cylinder regeneration?

• A. Slows retraction
• B. Uses both pump flow and cap flow to retract faster
• C. May allow use of a smaller pump
• D. Is where you get something for nothing

Answer: (C)

Regeneration uses the fluid from the piston’s rod end and sends it back into the cap end during extension. This adds the rod-end flow to the pump flow, boosting the total flow available to extend the cylinder. Because you get more extension speed without needing more pump capacity, you can often choose a smaller pump and still achieve the same extension rate. It’s mainly about faster extension under lighter loads; it doesn’t improve retraction speed and it isn’t “something for nothing.” So the advantage is that regeneration may allow use of a smaller pump.