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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. 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...

  3. Oberdorfer Pumps

    N991 Gear PUMP & motor

    N991M-J07

    $818.00
    Gear PUMP & motor. 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 selected for wear resistance and long service life.

    Gear pumps a...

  4. Hypro Pumps

    Cast Iron Gear Pump 1/4"

    GCCN22V

    $807.73
    Cast Iron Gear pump close coupled to a 1/3 hp Carbonator type motor. Includes adjustable relief valve. For lubricating liquids, not water.
    115v/230v Learn More
  5. 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
  6. 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
  7. Oberdorfer Pumps

    Close Coupled Bronze Rotary Gear Pump w/ relief valve

    N991RN32-F08

    $881.00
    Bronze Rotary Gear Pump with electric motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service...
    Pump & 1/3HP Motor 115v 1/4" Learn More
  8. 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...
  9. Oberdorfer Pumps

    Bronze Pedestal Gear Pump

    N9000S16

    $841.00
    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. Oberdorfer Pumps

    Bronze Pedestal Gear Pump 1"

    N9000S3

    $871.00
    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...
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