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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

    N994 Gear Pump & Mtr.

    N994J-W45

    $1,995.00
    Gear Pump. 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 are positive...

    2HP 115/230 Learn More
  2. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990J-W97

    $1,949.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaf...
  3. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor

    N990K-W96

    $1,923.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaft by ...
  4. Oberdorfer Pumps

    Bronze Rotary Gear Pump w/ motor & relief valve

    N990RJ-W95

    $1,649.00
    Oberdorfer Close coupled bronze rotary gear pumps.
    • Bronze Construction with SS shaft
    • Helical gears for quiet operation
    • Self-lubricating carbon bearings
    • O-ring seal for max. leak protection
    • The pump drive shaft is connected to the motor shaf...
  5. Hypro Pumps

    Bronze Rotary Gear pump

    GMBN5VB6

    $2,943.93
    Rotary Gear pump with electric motor. 303 SS fastners, Ryton gears. Heavy duty rotary external Gear pump, heavy duty with motor.

    Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discha...

    3/4" 2HP 115/230v Learn More
  6. Hypro Pumps

    316 Stainless Steel Gear pump

    GMSV6C3T

    $4,130.06
    Rotary Gear pump with motor. 316 Stainless construction, Ryton gears.

    Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rotational allows for flow direction reversal. ...

    3HP 230/460V TEFC Learn More
  7. Hypro Pumps

    Cast Iron Gear pump

    GMCV5VA6

    $2,255.39
    Rotary Cast Iron Gear pump with electric motor. 303 SS fasteners, steel 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...

    2HP 115/230v ODP 3/4" Learn More
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