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Premier Control Technologies Fluid Solutions

Micro Gear Pump

Longer pumps range of Micro Gear pumps are ideal for lab use, offering a brushless motor design with a stainless steel pump head.

Optional features allow the micro gear pump range to offer volume dispensing, copy numbers, pause time and calibration times. Speed output from the pump is also optionally available as well as pump start or stop status.

Flow rates for the micro gear pumps allow fluids to be dispensed from 86 mL/minute up to 2500 mL/minute. Fluids can be dispensed with particles present as long as they are less than 10 micron. Fluids up to 200 cSt in viscosity can also be pumped.

Product range

Longer Precision Pumps - 2025/2026 Catalogue

You can download the full 2025-2026 Longer Catalogue here, if you have any enquiries please feel free to contact us.

Working Principle of a Micro Gear Pump

Mirco Gear Pump - Working Principle

A micro gear pump uses the meshing of gears to pump fluid by displacement. They are typically used for hydraulic fluid power applications.

A magnetic drive contains an inner magnet embodied in the pump head and connected to the driving gear, and an outer magnet connected to the motor shaft. The pole-to-pole alignment of the two magnets provides the driving motion to the pump head.

Warranty

Longer offer a 3-Year Warranty

Longer offer a 3-Year Warranty on their range of Micro Gear Pumps.

Useful 'How To' videos

How to mount the Micro Gear Pump Head.

The Longer Advantage, Micro Gear Pumps

Completely sealed pump chamber

The magnetically coupled pump head provides a completely sealed pump chamber which is capable of handling a wide range of corrosive liquids with a high degree of safety.

Maintenance free

Maintenance-free pump drive with only a few wearing parts (gears, seals)

Pulseless delivery

Pulseless delivery.

Highly accurate

Highly accurate dispenser with dispensing volume calibration.

Large range of controls

Multi-control modes: keypad control, external signal control and communication control (RS-485) are available.

High differential pressures

High differential pressures up to 14 bar.

Typical applications for Longer, Micro Gear Pumps

  • Chemical production
  • Life Sciences
  • Liquid chromatography
  • Water treatment
  • Sampling
  • Food processing
  • Ink printing system
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Frequently asked questions

A micro gear pump is a compact, high-precision pump that uses rotating gears to transfer fluid. It's ideal for applications requiring smooth, continuous, and pulse-free flow in a small footprint.
Micro gear pumps offer excellent accuracy, repeatability, and low pulsation. They are highly compact, can handle a wide range of viscosities, and are ideal for integration into OEM devices or analytical instruments.
These pumps are commonly used in laboratory dosing, fuel cell technology, chemical dispensing, medical diagnostics, microfluidics, and inkjet printing—anywhere that controlled, miniature fluid flow is required.
Depending on the model, our micro gear pumps can handle flow rates from as low as a few microlitres per minute up to several hundred millilitres per minute. Precise control is maintained across the full range.
Yes. Micro gear pumps are capable of handling fluids with a wide range of viscosities, including oils, resins, and chemical additives. Performance will depend on the selected motor and gear design.
Absolutely. PCT supplies pumps with wetted materials like stainless steel or PEEK, which offer strong chemical resistance. The correct pump selection ensures safe operation with corrosive or reactive fluids.
Yes. Most models can operate in both directions, allowing for reversible flow. This is particularly useful in flushing applications or when flexible fluid handling is required.
Yes. We offer micro gear pumps with integrated sensors and control electronics that support RS232, RS485, Modbus, and analogue signals. These are easily integrated into automated or OEM systems.
Our micro gear pumps are available with DC motors, brushless DC (BLDC) motors, or stepper motors. The choice of motor depends on the application's torque, control, and speed requirements.
Definitely. Our team will help you choose the best micro gear pump based on your flow, pressure, fluid compatibility, and control needs. We also provide OEM integration support and customisation options.

Help and advice

A member of our team will be happy to assist with any questions you may have.

Ask the team