Gerotor pumps customised with no tooling

Paul Boughton

A new range of custom-designed Gerotor pump elements for in-house designed pumps is now available from Lee Products, providing engineers with reduced tooling and set-up costs.

In many OEM applications design flexibility is crucial, so the facility for engineers to be able to source individual components and elements, rather than being limited by the constraints of standard off-the-shelf components, is a better option.

These internal lobe Gerotor pump elements are manufactured using a wire EDM (electrical discharge machining) process, rather than the traditional broaching method. This process cuts conductive materials accurately, cleanly and efficiently without physical contact and without leaving burrs. The process is particularly suitable for delicate parts and, as no tooling is required, significantly reduces set-up costs and therefore minimises the time required to produce initial prototypes.

The pump elements are excellent for pumps being developed for use in a wide range of OEM applications - for example, lube and scavenge pumps for aircraft engines and transmission systems, fuel metering and transfer pumps, avionics cooling, marine and industrial gas turbines, military vehicle transmissions, racing and rally cars, hydraulic power equipment and chemical metering pumps.

They are available in stainless steel and bronze with widths ranging from 2.45mm up to 28.45mm and diameters from 20.32mm up to 91.44mm.

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