What they do:
A hydraulic pump converts mechanical energy into hydraulic energy by pushing fluid into the system.
How they work:
Typical hydraulic pumps are called Positive Displacement Pumps, which delivers a fixed/steady/specific amount of fluid per stroke or revolution, or cycle-either fixed or variable displacement. Pumps do not create pressure, they provide flow.
Why are they used:
Hydraulic pumps are used to create flow in a hydraulic system to create the flow that does work. They are one of the fundamental parts of a hydraulic system.
Size and Ratings:
A hydraulic pump is generally rated by its maximum operating pressure capability and output flow (in gallons per minute [GPM]) at a given drive speed.
