Advanced HydraulicsAdvanced HydraulicsDon GillilandDon Gilliland

Hydraulic ComponentsReservoirsAccumulatorsPumpsValvesActuatorsConductors

Hydraulic ComponentsPump Functions

Create FlowMaintain Flow against LoadLoad Flow = PressureVolume Under Pressure PerUnit of Time GPM@PSI

Hydraulic ComponentsPump Construction Types

Gear PistonVaneRotorLobe

Pump Construction TypesGear Pump Types

External Gear w/o glandsExternal Gear w/ glandsInternal Gear (Crescent)Maybe w/ or w/o glandsGerotor (Modified Int. Gear/Rotor)Note 1: 2nd ½ of this video is GerotorNote 2: Click on each brown type above for demos

Pump Construction TypesGear Pump Types

External Gear w/ glands

Hydraulic ComponentsPump Construction Types

Gear PistonVaneRotorLobe

Pump Construction TypesPiston Pump Types

Radial (John Deere and Massey)Radial (Push In)Axial (Bent Axis)Axial (Swash Plate)Axial (Wobble Plate)Note: Click on each brown type above for demos

Pump Construction TypesPiston Pump Types

Radial (John Deere and Massey)High Capacity (GPM) Double Pump for: Construction Equipment

Pump Construction TypesPiston Pump Types

Axial (Pressure Compensated)Axial (Cylindrical Energy Module)

(Scroll down for live animation)

Axial (Wolfhart Principle)Notes: 1.Click on each brown type above for demos2.Click On: Animated Pump Glossary for reference

Hydraulic ComponentsPump Construction Types

Gear PistonVaneRotorLobe

Pump Construction TypesVane Pump Types

Unbalanced GeometryBalanced Geometry (Dual/Triple Element)

Balanced PressureUnbalanced PressureVariable DisplacementNote: Click on each brown type above for demos

Summary of Vane pump Advantages

Pressure ports leading under vanes to balance pressure

Vane Balanced PressurePressure ports leading under vanes to

balance pressure

Vane Unbalanced Pressure

Hydraulic ComponentsPump Construction Types

Gear PistonVaneRotor (Gerotor) click on brown type

Lobe (External)

Hydraulic ComponentsPump Construction Types

Gear PistonVaneRotorLobe (Not Gear Teeth) click on brown type

Hydraulic ComponentsPumpsReviewNext ValvesTHE END