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Gear Pumps

Gear pumps, or rotary gear pumps, are positive displacement (or fixed displacement), meaning they pump a constant amount of fluid for each revolution. They consist of at least two separate and rotating gears with inter-meshing teeth. As these meshed teeth separate, they create a partial vacuum which is filled by the fluid being pumped. As the gears then continue to rotate the fluid becomes trapped and is carried around the casing to the discharge side of the pump. Here as the gear teeth begin to re-mesh the fluid is ejected creating a pumping action. Gear pump brands Oberdorfer Hypro Shertech

Typical Applications for Gear Pumps

  • Petrochemicals: Pure or filled bitumen, pitch, diesel oil, crude oil, lube oil etc.
  • Chemicals: Sodium silicate, acids, plastics, mixed chemicals, isocyanates etc.
  • Paint and ink.
  • Resins and adhesives.
  • Pulp and paper: acid, soap, lye, black liquor, kaolin, lime, latex, sludge etc.
  • Food: Chocolate, cacao butter, fillers, sugar, vegetable fats and oils, molasses, animal food etc.
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  1. Oberdorfer Pumps

    N991 Oberdorfer PUMP & MTR.

    N991-F41

    $753.00
    Glycol circulation Pump by Oberdorfer is just one of hundreds of applications. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selec...
    1/3HP 115 Learn More
  2. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump

    N999R-F41

    $699.00
    Bronze gear pump mounted to a 1725rpm 1/3 HP motor. Pump has relief valve.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close toleran...
    115v 1/3HP Learn More
  3. Hypro Pumps

    Bronze gear pump 1/4"

    BB2

    $798.48
    Bronze gear pump . For oils and other lubricating liquids. Used on fryers. Not for use on water.
    Pedestal Mount Learn More
  4. Graco Pumps

    EGP Transfer Pump 115v

    25T820

    $772.00

    EGP™ Transfer Pump, 115 VAC, 3.9 gpm (14.8 lpm), 65 psi (4.5 bar)

    Choose cost-saving convenience with the all-new Graco EGP electric pumps. Attach the EGP transfer pump directly to roll-around barrels for more mobility in more places. These pum...

    115vAC Learn More
  5. Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000LR

    $688.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by t...
  6. Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000LRS15

    $794.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
  7. Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000LRS3

    $705.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
  8. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000LS15

    $711.00
    Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
  9. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S15

    $711.00
    Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings.
    • Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the backpressure in the...
  10. Hypro Pumps

    Rotary Gear pump only

    MCN6VC

    $727.88
    Rotary Gear pump end. Cast Iron with 303 SS fastners, CI gears.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more than one minute.

    U...

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