External gear pumps are robust and reliable hydraulic pumps used in a wide range of systems where a constant oil flow is required. They operate by mechanically transporting fluid using two intermeshing gears, which ensures smooth and dependable flow even under demanding operating conditions.
Low noise fixed pump.
An external gear pump consists of two gears rotating within a shared pump housing. As the gears rotate, a vacuum is created on the inlet side, drawing hydraulic oil into the pump. The oil is then carried around the housing in the spaces between the gear teeth and the housing wall, and finally discharged on the outlet side. Because the gears mesh tightly, reverse flow is prevented, resulting in a stable and pulse-free fluid movement.
External gear pumps always operate with fixed displacement, meaning they deliver a consistent flow per revolution. This makes them especially suitable for applications where flow requirements are steady, and where simplicity and reliability are prioritized. They are also tolerant of minor contamination and can operate at high speeds, making them versatile in various installation environments.
Thanks to their straightforward mechanical design, external gear pumps are highly dependable and easy to maintain. They are cost-effective in both initial purchase and long-term servicing, while offering good efficiency relative to their size. Their compact footprint also makes them ideal for systems with limited space. Even during extended use, they typically maintain consistent performance with minimal wear.
External gear pumps are used in a wide range of hydraulic systems – from agricultural and construction equipment to industrial power units and machine tools. They are ideal for auxiliary systems requiring constant flow, such as steering circuits, lifting systems, and lubrication units. Due to their durability and simplicity, they are often the first choice in applications where reliable function is more critical than advanced control options.
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