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Comparing Hydraulic Pumps

Comparing different types of hydraulic pumps and their maximum pressures and flow.

Hydraulic Pumps
Type of PumpMaximum Pressure
(bar)
Maximum Flow
(l/min)
Comment
Centrifugal 20 3000
Gear 175 300 Positive displacement
Vane 175 500 Positive and variable displacement
Axial Piston - port-plate  300 500 Positive and variable displacement
Axial Piston - valved 700 650 Positive and variable displacement
In-line Piston 1000 100 Positive and variable displacement
  • 1 bar = 1×105 Pa = 14.5 psi
  • 1 l/s = 2.1 cfm = 15.9 gal (US)/min
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