Gear Oil Pump

KOLEBURG engineers the robust Gear Oil Pump to deliver precise, pulsation-free volumetric transfer for highly viscous lubricating fluids under extreme industrial pressures.

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KOLEBURG As a Gear Oil Pump Manufacturer

As an industry-leading manufacturer, KOLEBURG combines high-precision gear machining with heavy-duty metallurgy to produce the premier Gear Oil Pump. We guarantee reliable, continuous fluid power and lubrication transfer for demanding global energy sectors.

Manufacturing: We utilize advanced CNC technology to cut perfectly meshing internal and external gears, ensuring the Gear Oil Pump operates with exact clearances inside a rugged Cast Iron Pump casing for zero-slip efficiency.
Service: From exact viscosity-matching analysis to rapid OEM parts delivery, our engineering team ensures your Gear Oil Pump functions with absolute operational uptime.
Application: Specifically engineered for the petrochemical and heavy machinery sectors, this positive displacement equipment perfectly complements our broader Oil Pump portfolio by smoothly handling thick oils that standard centrifugals simply cannot process.

KOLEBURG Gear Oil Pump Core Performance Parameter Range Table

This comprehensive table outlines the exact volumetric and pressure capabilities of our Gear Oil Pump, guaranteeing steady-state flow in high-viscosity applications.

Parameter	Range Specification
Discharge Size	15mm to 200mm (0.5″ to 8″)
Flow Rate (Capacity)	1 to 150 m³/h
Maximum Discharge Pressure	Up to 2.5 MPa (25 bar)
Maximum Fluid Viscosity	Up to 100,000 cPs
Operating Temperature	-20°C to +300°C

KOLEBURG Gear Oil Pump Flow Rate and Speed Reference Table

By matching the fluid’s viscosity to the correct gear RPM, this chart ensures your Gear Oil Pump avoids cavitation, offering flow stability that rivals a standard Horizontal Single Stage Oil Pump but with much thicker media.

Nominal Diameter (DN)	Optimal Flow Rate (m³/h)	Recommended Speed (RPM)
25mm (1″)	1 – 3	1450
50mm (2″)	5 – 12	980 – 1450
80mm (3″)	15 – 35	740 – 980
150mm (6″)	50 – 100	580 – 740

KOLEBURG Gear Oil Pump Structure and Material Performance Comparison Table

Select the ideal heavy-duty metallurgy to prevent wear; whether you require a non-sparking Bronze Pump gear set for flammable fuels or a premium Stainless Steel Pump for corrosive lubricants, the Gear Oil Pump is highly adaptable.

Component	Standard Material	Performance Characteristic
Gears (Rotors)	Heat-Treated Alloy Steel / SS316	Exceptional surface hardness resists abrasive wear from particulate-laden heavy oils.
Pump Casing	Cast Iron / Ductile Iron	Thick-walled construction prevents casing expansion under high system pressures.
Pump Shaft	420 or 4140 Alloy Steel	Maximum tensile strength handles extreme torque spikes when pumping cold, thick fluids.
Sealing System	Mechanical Seal / Packing	Prevents oil leakage while ensuring the shaft remains perfectly lubricated.

KOLEBURG Gear Oil Pump Key Performance Features

Positive Displacement Flow: The Gear Oil Pump forces a fixed volume of fluid out with every rotation, meaning the flow rate remains perfectly stable regardless of changing system backpressure.
Superior Suction Lift: The tight tolerances between the meshing gears create a powerful vacuum, allowing the Gear Oil Pump to operate similarly to a Self-Priming Centrifugal Oil Pump when drawing fluids from underground tanks.
Reversible Operation: By simply reversing the motor direction, the Gear Oil Pump can pump fluid backward, which is ideal for clearing long discharge lines after a transfer.
Internal Relief Valve: Built-in safety bypass valves protect the Gear Oil Pump from catastrophic overpressure if a downstream pipeline becomes blocked.

Need to know more about the Gear Oil Pump?

Are you looking to optimize your lubrication systems or eliminate downtime caused by high-viscosity fluid handling? Contact KOLEBURG today to obtain detailed performance curves, precise dimensional CAD drawings, and highly competitive pricing for our Gear Oil Pump. Our experts will assist your procurement team in maximizing your engineering ROI, ensuring this equipment perfectly integrates with your existing Multistage Oil Pump high-pressure networks.

Gear Oil Pump Applications

Refinery Transfers

Acts as a highly reliable petrochemical crude oil transfer pump, smoothly handling heavy, unrefined crude oils that cause standard pumps to lose efficiency.

Asphalt & Tar

Deployed as a durable refinery high temperature slurry pump, efficiently moving hot, sticky bitumen and heavy residues without the gears seizing.

Pipeline Maintenance

Functions seamlessly as a crude oil pipeline pressure booster pump, maintaining steady flow for high-viscosity lubricants across long-distance distribution networks.

Industrial Lube Systems

Serves as the primary circulation unit for large-scale gearbox and turbine lubrication skids, ensuring a constant oil film is maintained on critical plant machinery.

KOLEBURG other pump series

Self-Balancing Multistage Pump

Multistage Centrifugal Pump

Single Stage Pump

Split Case Pump

Inline Pump

Self-Priming Pump

Deep Well Pump

Slurry Pump

Axial Flow Pump

Mixed Flow Pump

Sewage Pump

Magnetic Pump

Metering Pump

rotor pump

Oil Pump

Condensate Pump

Mud Pump

Fire Pump

Screw Pump

Gear Oil Pump FAQs

1. How does the viscosity of the fluid affect the Gear Oil Pump?

Unlike centrifugal pumps, a Gear Oil Pump actually becomes more efficient as the fluid gets thicker because the high viscosity seals the internal clearances between the gears, reducing volumetric “slip.”

2. Can a Gear Oil Pump handle fluids containing solid particles?

No, a standard Gear Oil Pump is strictly designed for clean, lubricating fluids. Abrasive grit or hard solids will quickly score the tight clearances between the gear teeth and the casing, destroying the pump’s efficiency.

3. What is the difference between an external and internal Gear Oil Pump?

An external Gear Oil Pump uses two identical, interlocking gears side-by-side, which is excellent for high pressure. An internal gear pump uses a smaller gear rotating inside a larger outer ring gear, which is typically better for extremely shear-sensitive or ultra-high viscosity fluids similar to a rotor pump.

4. Why is a built-in relief valve necessary for this equipment?

Because the Gear Oil Pump provides positive displacement, it will continue to build pressure if the discharge line is closed, eventually rupturing the pipe or burning out the motor. The relief valve safely recirculates the oil internally if pressure exceeds the safety limit.

5. How is the flow rate of the Gear Oil Pump controlled?

Since the volume per revolution is fixed, the flow rate of a Gear Oil Pump is directly proportional to its speed. Flow is adjusted by changing the speed of the drive motor, usually through a variable frequency drive (VFD) or a mechanical gear reducer.