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How It Works

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Pump Selection Process

Selecting the right hydraulic pump involves matching system requirements (flow, pressure, duty cycle) with pump capabilities. The process determines displacement, power, and recommends the most suitable pump type.

Required Displacement Calculation

Displacement is calculated from the required flow rate and available drive speed:

D = Q / (N x eta_v)

  • D = Displacement (cc/rev or in3/rev)
  • Q = Required flow rate
  • N = Drive speed (RPM)
  • eta_v = Expected volumetric efficiency

Pump Type Selection Guide

Gear Pumps

  • Pressure Range: Up to 3000 PSI (207 bar)
  • Efficiency: 80-91%
  • Advantages: Simple, compact, low cost, tolerant of contamination
  • Disadvantages: Fixed displacement, noise, lower efficiency
  • Best For: Mobile equipment, simple circuits, cost-sensitive applications

Vane Pumps

  • Pressure Range: Up to 3000 PSI (207 bar)
  • Efficiency: 82-92%
  • Advantages: Quiet operation, good efficiency, variable displacement available
  • Disadvantages: Sensitive to contamination, limited pressure range
  • Best For: Industrial machinery, machine tools, low-noise requirements

Piston Pumps

  • Pressure Range: Up to 6000+ PSI (414+ bar)
  • Efficiency: 90-98%
  • Advantages: Highest efficiency, highest pressure, variable displacement
  • Disadvantages: Higher cost, complex, sensitive to contamination
  • Best For: High pressure systems, energy-efficient applications, precise control
Pump Type Comparison GEAR PUMP Simple, Robust Up to 3000 PSI VANE PUMP Quiet, Efficient Up to 3000 PSI PISTON PUMP High Efficiency Up to 6000+ PSI Selection Criteria Gear Vane Piston Cost: $ Low $$ Medium $$$ High Efficiency: 80-91% 82-92% 90-98% Max PSI: 3000 3000 6000+ Noise: Higher Low Medium Variable: No Yes Yes

Pump Sizing Calculator

Calculate required pump displacement, power, and get pump type recommendations based on your system requirements.

System Requirements

Prime Mover

Application Factors

Required Displacement
--
cc/rev
Input Power
--
HP
Motor Size
--
HP (std)

Pump Type Recommendations

Gear Pump --
Max Pressure 3000 PSI
Efficiency 80-91%
Cost $
Variable No
Vane Pump --
Max Pressure 3000 PSI
Efficiency 82-92%
Cost $$
Variable Yes
Piston Pump --
Max Pressure 6000+ PSI
Efficiency 90-98%
Cost $$$
Variable Yes

Additional Specifications

Hydraulic Power --
Theoretical Flow --
Displacement (in3/rev) --
Drive Torque --
Enter values to calculate pump sizing.

Quick Selection Guide

⚙
Low Cost
Gear pump for budget-sensitive mobile/industrial
🔊
Low Noise
Vane pump for quiet indoor applications
⚡
High Efficiency
Piston pump for energy-critical systems