Fraud Blocker


Gear Pumps

What You Get

Tupelo Hydraulics has over 40 years combined experience, we have the ability to help you with all your hydraulic gear pump needs.

specializing in hydraulic gear pump repair

As the gears rotate they separate on the intake side of the pump, creating a void and suction which is filled by fluid. The fluid is carried by the gears to the discharge side of the pump, where the meshing of the gears displaces the fluid. The mechanical clearances are small— in the order of 10 μm. The tight clearances, along with the speed of rotation, effectively prevent the fluid from leaking backwards. The rigid design of the gears and houses allow for very high pressures and the ability to pump highly viscous fluids. Tupelo Hydraulics can repair your hydraulic gear pump.

Hydraulic Gear Pump Exploded View

Hydraulic Gear Pump Parts

External Hydraulic Gear Pump

Internal Hydraulic Gear Pump

Hydraulic Gear Pump/Repair

Tupelo Hydraulics offer the following Hydraulic Pumps and Hydraulic Pump Repair and Product Lines
See our list by clicking below

American-March Pumps
Products: Helical gear pump
Applications: Blending, mixing, transfer, solvents, oils, chemicals, Heavy, Viscous Liquids

Viking Pump
Products: Internal and External Gear Pumps (Mag Drive, Heavy Duty Alloy, Abrasive Liquid, Hygienic)
Applications: Industrial applications from chemicals, fuels and plastics, to materials that are thin, thick, hot, cold, liquid, solid, and much more.

Products: Helical gear pump, self‐priming
Applications: Fuel feed, handling fuel, lubricating oil and viscous fluids, lubrication systems

Gorman-Rupp Pumps
Products: Rotary gear pumps: medium and heavy duty, abrasive handling pumps. Compact and standard size rotary gear pumps
Applications: Handling viscous liquids, abrasive liquids

Products: Hydraulic Gear Pumps
Applications: Material Handling, Turf Care, Agricultural, Construction Equipment

BSM Pump Corporation
Products: Rotary Gear Pumps, Automatic Reversing Gear Pumps
Applications: Pressure lubrication, hydraulic service, fuel supply, and general liquid transfer, recirculating, mixing, and transfer applications

Products: Gear Pumps for fuel
Applications: Light oil, B10 heating oil/biofuel blend (as defined in DIN V51603-6) and kerosene. One or two-pipe system. System with in-line solenoid valve to assure cut-off function.

Products: Hydraulic-Driven Gear Pump
Applications: Agriculture & Turf Spraying, Transfer & Mixing

Rexroth Bosch Group
Products: External Gear Pumps, Internal Gear Pumps
Applications: Hydraulic fluid transport to the pressure range

Corrosion Fluid Products Corp
Products: Double Helical Rotary Gear Pumps
Applications: General Purpose, Chemical Processing, Greases and Fats, Petroleum Production and Refining, Syrups, Utility, High Viscosity Polymers, Marine, Pulp and Paper

Roper Pump Company
Products: Gear Pumps: High Pressure External Gear Pump, Magnetic Drive, Seal-Less Helical Gear Pump
Applications: General transfer applications, Pressure lubrication, Hydraulic lift, Mixing, Blending and Recirculating a variety of fluids, Pumping Viscous Liquids, Crude Oil, Condensate, Well treatment chemicals, Produced water, Waste oil

Delta Industries Inc
Products: Rotary Gear Pumps, ANSI Process, Centrifugal Pumps, High Pressure, Progressive Cavity, Sanitary 3A, Hygienic, Metering, Vertical turbine, Submersible, Air Operated Diaphragm, Non Clogging, Food Transfer, Screw, Slurry, Rubber lined, Cleaning, Split Case Pumps
Brands: Sulzer, Moyno, WEIR, Roto-Jet, WEMCO, Ampco, Floway, Versamatic, Tsurumi, ABS

NNT Corporation LLC
Products: Rotary Gear Pumps, Automatic Reversing Gear Pumps
Applications: Pressure lubrication, hydraulic service, fuel supply, and general liquid transfer, recirculating, mixing, and transfer applications

Apex Pumping Equipment
Products: Helical Gear Pumps
Applications: Oil field service, Brine and raw water, Sludges and slurry, Waste oils, tallow, etc., Sealant coats, Molasses feeds, Fertilizers, Paper pulps

Products: Positive Displacement Gear Pums for marine applications
Applications: Deck-wash, fuel transfer, ballast transfer, and oil change

ZEELINE (National-Spencer, Inc.)
Products: 12 Volt and 115 Volt Electric Gear Pumps
Applications: For transferring gasoline, kerosene, diesel fuel, mineral spirits heptane, stoddard solvents

Products: Gear Pumps
Applications: Adhesive, Biofuel, Chemical, Food Process, Lube Oil and Grease, Paint and Coating, Petrochemical, Petroleum Additives
Polyurethane, Printing, Resin, Soap

Coker Pump & Equipment Company
Products: Gear Pumps
Applications: Asphalt, Chemical, Corn Syrup, Fuel Oil, Florinert, Heat Transfer Fluids, Molasses, Polymer & Resins

  • Parker Hannifin
  • Advanced Fluid Systems, Inc.
  • Advanced Hydraulics, Inc.
  • AeroControlex
  • Albany Pump Company Ltd.
  • All World Machinery Supply Inc.
  • American Eagle Accessories Group
  • American Lab & Systems
  • AZ Hydraulic Engineering, Inc.
  • Barbee Engineered Testing Systems
  • BJM Pumps, LLC
  • Bosch Rexroth Corporation
  • Viking Pump, Inc.
  • KSB Inc
  • Gorman-Rupp Pumps
  • Parker Hannifin Corp (GEAR PUMP DIVISION)
  • BSM Pump Corporation
  • SUNTEC Industries
  • HYPRO (Pentair Ltd.)
  • Gorman-Rupp Industries
  • Corrosion Fluid Products Corp
  • Roper Pump Company
  • Delta Industries Inc
  • NNT Corporation LLC
  • Apex Pumping Equipment
  • ZEELINE (National-Spencer, Inc.)
  • PSG
  • Coker Pump & Equipment Company
  • Abex Denison Hydraulics
  • Atchley Hydraulics
  • Bosch Rexroth Hydraulics
  • Caterepillar Hydraulics
  • Cessna Hydraulics
  • Charlynn Hydraulics
  • Commercial Intertech Hydraulics
  • Commercial Scheering Hydraulics
  • Commercial-Parker Hydraulics
  • Continental Hydraulics
  • Continental Pumps
  • Daikin Hydraulics
  • Danfoss Hydraulics
  • Denison Hydraulics
  • Denison-Parker Hydraulics
  • Dynett Hydraulics
  • Dynapower Hydraulics
  • Eaton Hydraulics
  • GearTek Hydraulics
  • Hitachi Hydraulics
  • Hydreco Hydraulics
  • John Deere Hydraulics
  • Kawasaki Hydraulics
  • Kawasaki Staffa Hydraulic Motors
  • Kayaba Hydraulics
  • Kobelco Hydraulics
  • Komatsu hydraulics
  • Linde Hydraulics
  • LinkBelt Hydraulics
  • Mitsubishi Hydraulics
  • Moog Hydraulics
  • Oilgear Hydraulics
  • Parker Hydraulics
  • Parker-Servo Valves
  • Racine Hydraulics
  • Rexroth Hydraulics
  • Samsung Hydraulics
  • Sauer Danfoss Hydraulics
  • Sauer Sundstrand Hydraulics
  • Sunfab Hydraulics
  • Uchida Hydraulics
  • Vickers Hydraulics
  • Volvo Hydraulics
  • White Hydraulics

Hydraulic Gear Pump Applications

Learn more by clicking below
  • Barber-Greene Pavers Sundstrand Hydraulic Gear Pump Repair
  • Blaw-Knox Pavers Dynex-Rivett Gear Pump Repair
  • Bomag Rollers Linde, Rexroth, Poclain Gear Pump Repair
  • Case Backhoe Webster, Commercial Gear Pump Repair
  • Case Track Loaders Sundstrand Gear Pump Repair
  • Case Dozer Sundstrand Gear Pump Repair
  • Case Wheel Loader Commercial Gear Pump Repair
  • Case Excavator Linde, Kawasaki Gear Pump Repair
  • Case Skid Loaders Sundstrand Gear Pump Repair
  • Caterpillar Dozer Linde, Rexroth, Tyrone, Vickers Gear Pump Repair
  • Caterpillar Track Loaders Cat, Linde, Vickers, Tyrone Gear Pump Repair
  • Caterpillar Excavators Linde, Rexroth, Kawasaki, Cat Gear Pump Repair
  • Caterpillar Milling Machine Sundstrand, Ross Gear Pump Repair
  • Caterpillar Motor Graders Vickers Gear Pump Repair
  • Caterpillar Scrapers Tyrone, Vickers Gear Pump Repair
  • Caterpillar Backhoe Rexroth, Vickers Gear Pump Repair
  • Caterpillar Wheel Loaders Vickers, Tyrone, Linde Gear Pump Repair
  • Daewoo Excavator Linde, Kawasaki Gear Pump Repair
  • John Deere Backhoe Deer, Oil Gear (Hydura) Gear Pump Repair
  • John Deere Dozer Sundstrand Gear Pump Repair 
  • John Deere Track Loader Sundstrand Gear Pump Repair
  • John Deere Wheel Loader Sundstrand, Tyrone, Rexroth Gear Pump Repair
  • John Deere Excavator Linde, Uchida, Hitachi, Kawasaki Gear Pump Repair
  • Dresser Track Loader Linde Gear Pump Repair
  • Gradall Excavator Commercial, Rexroth, KYB Gear Pump Repair
  • Grove Excavator Commercial Gear Pump Repair
  • Hamm Rollers Linde Gear Pump Repair
  • Hitachi Excavator Hitachi, Kawasaki Gear Pump Repair
  • Hyundai Excavator Kawasaki Gear Pump Repair
  • Ingersoll-Rand Roller Sundstrand, Poclain Gear Pump Repair
  • Kato Excavator Kawasaki Gear Pump Repair
  • Kobelco Excavator Kawasaki Gear Pump Repair
  • Komatsu Dozer tyrone, Commercial, Hydreco Gear Pump Repair
  • Komatsu Rollers Vickers, Sundstrand Gear Pump Repair
  • Komatsu Wheel Loaders Komatsu Gear Pump Repair
  • Komatsu Excavators Komatsu Gear Pump Repair
  • Liebherr Excavators Linde, Liebherr Gear Pump Repair
  • Liebherr Excavators Track Loader Linde Gear Pump Repair
  • Liebherr Track Loader Linde Gear Pump Repair
  • Linkbelt Excavator Linde, Uchida Gear Pump Repair
  • P&H Crane Rexroth, Tyrone, Commercial Gear Pump Repair
  • Putzmiester Concrete Pumps Rexroth Gear Pump Repair
  • Schwing Concrete Pumps Rexroth Gear Pump Repair
  • Volvo Wheel Loaders Tyrone, Vickers Gear Pump Repair
  • Volvo Read Dump Commercial Gear Pump Repair
  • Wirtgen Milling Machine Rexroth Gear Pump Repair
    Call Tupelo Hydraulics for all your pump repair needs.

How does a Hydraulic gear pump work

Hydraulic Gear pumps (with external teeth) (fixed displacement) are simple and economical pumps. The swept volume or displacement of gear pumps for hydraulics will be between about 1 and 200 milliliters. They have the lowest volumetric efficiency of all three basic pump types (gear, vane and piston pumps) These pumps create pressure through the meshing of the gear teeth, which forces fluid around the gears to pressurize the outlet side. For lubrication, the gear pump uses a small amount of oil from the pressurized side of the gears, bleeds this through the (typically) hydrodynamic bearings, and vents the same oil either to the low pressure side of the gears, or through a dedicated drain port on the pump housing.Some gear pumps can be quite noisy, compared to other types, but modern gear pumps are highly reliable and much quieter than older models. This is in part due to designs incorporating split gears, helical gear teeth and higher precision/quality tooth profiles that mesh and unmesh more smoothly, reducing pressure ripple and related detrimental problems. Another positive attribute of the gear pump, is that catastrophic breakdown is a lot less common than in most other types of hydraulic pumps. This is because the gears gradually wear down the housing and/or main bushings, reducing the volumetric efficiency of the pump gradually until it is all but useless. This often happens long before wear causes the unit to seize or break down.

give us a call for your Hydraulic Gear Pump Needs