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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. Hypro Pumps

    Bronze Gear pump 1/3 hp

    GCBN22V

    $1,260.19
    Bronze Gear pump close coupled to a 1/3 hp Carbonator type motor. 115v

    Includes relief valve.

    115v 1/4" Learn More
  2. Hypro Pumps

    Hot Oil Gear Pump

    NG7V

    $2,168.60

    NG NSF Listed Industrial Gear Pumps. OBSOLET

    Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium p...

  3. Hypro Pumps

    Hot Oil Gear Pump Less Motor

    NG11V-PH

    $2,099.00

    NG NSF Listed Industrial Gear Pumps. Obsolete

    Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium ...

  4. Oberdorfer Pumps

    3/4" Bronze gear pump 1HP

    N970H-N75

    $2,659.00
    3/4" Bronze rotary gear pump without relief valve and close coupled to a 1 HP 12VDC 1725 RPM motor. Often used to pump Diesel fuel. Pump housings and gears are made of top quality bronze, shafts are stainless steel 303. Bearings are made of high ...
    12vdc Learn More
  5. Oberdorfer Pumps

    Bronze Rotary Gear Pump EXP

    N999-spec

    $1,200.00
    1/2 gpm diesel oil pump with EXP motor.

    Features N999 Series:

    • Compact design eases installation and use in limited space areas.
    • Construction is bronze and stainless steel wetted components.
    • Close tolerance design allows for consistent perf...
  6. Hypro Pumps

    SS Rotary Gear Pump Pedestal

    GPSV2

    $2,469.00
    Pedestal Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium pressure spraying, sump draining,...
  7. Hypro Pumps

    Stainless Rotary Gear Pump Pedestal

    GPSV4

    $2,689.00
    Pedestal Stainless Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with stainless steel pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium pressur...
  8. Hypro Pumps

    SS Rotary Gear Pump Pedestal

    GPSV6

    $3,309.61
    Pedestal Gear pumps are recommended for non-abrasive, non-flammable liquids compatible with pump component materials. They can be used for liquid circulation, lubrication, pressure boosting, filtering, medium pressure spraying, sump draining, dru...
  9. Hypro Pumps

    Bronze gear pump 24 gpm

    BB6

    $850.54

    24 GPM Bronze pedestal mounted gear pump 1". For oils, paint , inks and other lubricating liquids. Pump has packing along the shaft. Do not pulley drive. Without Relief Valve, Seal Kevlar Packing, Bronze Spur Gear, Pump RPM 1725 Max. 

    For electri...

  10. Oberdorfer Pumps

    Bronze Pedestal Gear Pump w/ relief valve

    N9000R

    $1,044.00
    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...
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