External Gear Pumps


WHY? The external gear pump is the ultimate solution for high pressure pumping.
- Bearing support on both sides of the gears enables differential pressures to 500 PSI (34 BAR), or Intermittent to 2,500 PSI (170 BAR)
- Motor speed operation eliminates cost of speed reducer
- Eliminates lubrication – no external axial or radial bearing required in most applications
Typical Applications
Common external gear pump applications include, but are not limited to:
- Various fuel oils & lube oils
- Chemical additive & polymer metering
- Chemical mixing & blending (double pump)
- Industrial & mobile hydraulic applications
- Low volume transfer or application
Materials of Construction & Configuration Options
Externals (Head, Casing, Bracket)
Iron, ductile iron
Internals (Shafts)
Steel
Internals (Gears)
Steel
Bushings (Sleeve Bearings)
Carbon, silicon carbide, needle bearings
Shaft Seal
Lip seal, component mechanical seal, sealless magnetic couplings
Key External Gear Pump Elements

Advantages to External Gear Pumps
Higher Pressure Capabilities
With shaft support on both sides of the gears
Multi-Section Pumps
Use one motor for multiple pumping applications, blending liquids, or splitting flows to different uses
Shaft Seal Options
Including lip seal, component mechanical seal and sealless mag drive options
Compact, Close-Coupled Options
For motor speed operation or with gearmotors
Smooth, Non-Pulsing Flow
For accurate flow measurement
Reliable & Easy to Maintain
With only two moving parts
One Shaft Seal
More reliable and lower cost than two used on timed lobe and screw pumps
Performance
Flow Range
viscosity
pressure
temperature
External Gear Pump Features
