When it comes to transferring oil efficiently, gear pumps for oil are one of the most reliable and effective options available. Built for consistency and durability, these positive displacement pumps are used across industrial, automotive, and lubrication applications due to their ability to handle viscous fluids and deliver steady flow at high pressure.

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What Are Gear Pumps?

A gear pump is a type of positive displacement pump that uses meshing gears to move fluids. These pumps work by trapping oil between the teeth of two rotating gears and the pump casing, then transferring it from the inlet side to the outlet side with precision.

Because gear pumps generate flow with tight internal clearances and minimal pulsation, they’re especially suited for handling viscous liquids like motor oil, hydraulic oil, gear lube, and synthetic lubricants.

How Gear Pumps Work

Gear pumps come in two main types:

External Gear Pumps: Feature two identical gears rotating against each other. Oil enters the pump as the gear teeth unmesh, creating a void. The oil is then carried around the outer casing and exits when the gears mesh again.
Internal Gear Pumps: Contain a larger outer gear and a smaller inner gear, offset inside the casing. These provide smoother, quieter operation and are ideal for applications requiring compact, low-noise designs.

Both types maintain a steady, pulse-free flow, making them ideal for metering and lubrication.

Why Gear Pumps Are Ideal for Oil

1. Viscosity Handling
Gear pumps thrive when dealing with viscous fluids. Whether it’s thick hydraulic oil or cold gear lube, these pumps provide smooth, continuous flow without performance loss.

2. High Pressure Capability
Many gear pumps can handle pressures up to 3000 psi, which is more than sufficient for oil transfer, circulation, and injection applications.

3. Compact Design
Gear pumps have a small footprint, making them ideal for installations where space is limited — such as skid-mounted units or mobile equipment.

4. Minimal Maintenance
Thanks to fewer moving parts and tight tolerances, gear pumps are known for their durability and long service intervals.

Common Applications of Gear Pumps for Oil

Hydraulic Oil Transfer: Used in mobile machinery, industrial systems, and hydraulic power units.
Engine Lubrication: Circulates oil in diesel engines and generators.
Industrial Lubrication Systems: Maintains flow in automated grease and oil lubrication systems.
Oil Filtration and Fuel Polishing: Transfers oil through filters to maintain clean systems.
Marine and Mining Equipment: Handles heavy-duty oil transfer and circulation in tough environments.

Selecting the Right Gear Pump

When choosing a gear pump for oil, consider:

Viscosity range of the oil being pumped
Required flow rate (usually measured in litres per minute)
System pressure
Temperature range
Material compatibility (cast iron, stainless steel, or bronze)

At MultiTorque, we help you match the right gear pump to your specific oil type, application, and operating conditions.

Gear Pump Maintenance Tips

Monitor for Wear: Over time, gears and internal clearances may wear, reducing efficiency. Inspect regularly.
Check Seals and Gaskets: Leaks around the shaft or casing can be resolved by replacing seals.
Use Clean Oil: Dirty oil accelerates wear. Use filters and perform oil changes as recommended.
Lubricate Bearings: Some gear pumps rely on oil-lubricated bearings. Keep them in top shape.

Preventative maintenance helps avoid unexpected breakdowns and keeps oil systems running at full capacity.

MultiTorque: Your Trusted Gear Pump Partner

At MultiTorque, we specialize in supplying and servicing gear pumps for oil and other industrial pump systems. We understand the needs of Australia’s heavy-duty sectors, offering:

Custom-fit solutions for oil handling systems
Genuine parts and servicing
Local support in Perth and Brisbane
Fast turnaround and professional advice

Whether you need a single pump or a complete system, we have the tools and expertise to deliver.

Visit us at www.multitorque.com.au or follow us on LinkedIn: MultiTorque LinkedIn to learn more.

Call 1300 726 525 or email sales@multitorque.com to order your gear pump for oil today!

Gear Pumps for Oil

Gear Pumps for Oil: Powerful Precision and Performance 2025