Understanding Hydraulic Pump Designs

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Before We Start

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Meet your Speakers

MODERATOR FEATURED SPEAKER

Josh Cosford Contributing Editor Fluid Power World

Paul Heney Editorial Director Design World

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The basics of hydraulic pump design

Understanding Hydraulic Pump Designs

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A hydraulic pump operates by alternately increasing

and decreasing displacement


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The hand pump


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There are three primary types of hydraulic pumps.


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There are three primary types of hydraulic pumps.


Ø  The gear pump Ø  The vane pump Ø  The piston pump

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Gear Pump


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Gear Pump


Advantages:Ø  InexpensiveØ  Contamination resistantØ  High RPM capableØ  Rotation easily changedØ  ReliableØ  Can be stacked together

Disadvantages:Ø  InefficientØ  Can be noisyØ  Quickly become less

efficient with wear and higher pressure

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Vane Pump


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Vane Pump


Advantages:Ø  QuietØ  Relatively contamination

resistantØ  Fixed pumps

inexpensiveØ  Easily repairable

Disadvantages:Ø  Low RPMØ  Variable pumps can get

expensiveØ  Low pressure capacity

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Piston Pumps


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Piston Pumps


Axial Piston Pump Bent Axis Piston Pump Radial Piston Pump

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Axial Piston Pump


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Bent Axis Piston Pump


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Radial Piston Pump


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Piston Pumps


Advantages:Ø  High to very high

pressure capacityØ  High RPMØ  Extremely efficientØ  Myriad configurations of

compensation

Disadvantages:Ø  ExpensiveØ  Contamination sensitiveØ  Most expensive to repair

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Recap


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Recap – Gear Pumps


Ø  InexpensiveØ  Contamination resistantØ  High RPM capableØ  Rotation easily changedØ  ReliableØ  Can be stacked togetherØ  InefficientØ  Can be noisyØ  Quickly become less

efficient with wear and higher pressure

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Recap – Vane Pumps


Ø  QuietØ  Relatively contamination

resistantØ  Fixed pumps

inexpensiveØ  Easily repairableØ  Low RPMØ  Variable pumps can get

expensiveØ  Low pressure capacity

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Recap – Piston Pumps


Ø  High to very high pressure capacity

Ø  High RPMØ  Extremely efficientØ  Myriad configurations of

compensationØ  ExpensiveØ  Contamination sensitiveØ  Most expensive to repair

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Questions?

MODERATOR FEATURED SPEAKER

Josh Cosford Contributing Editor Fluid Power World [email protected] @FluidPowerTips

Paul Heney Editorial Director Design World [email protected] @DW_Editor

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q  This webinar will be available at www.fluidpowerworld.com & email

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Understanding Hydraulic Pump Designs

Engineering

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