Electric gear pumps – Ready-to-use units

Electric gear pumps are fully assembled gear pump units that include a motor, coupling, and pump housing. They are suitable for applications where a standard flanged gear pump with a customer-supplied drive is not required, but rather a ready-to-use gear pump with a specified motor.

Depending on the fluid, viscosity, flow rate, pressure, and desired control capabilities, different models are used—for example, compact units, models with variable-frequency drives, gear motors, magnetic couplings, or models designed for tank installation.

For non-lubricating or non-corrosive media: Stainless steel electric gear pumps.

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Series

Select the appropriate electric gear pump based on flow rate, viscosity, motor power, installation conditions, and desired control capabilities.

FLM series

Compact gear pump with electric motor

Delivery rate: 0,6 / 24 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 0,12 / 1,5 kW

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FKM series

Gear pump with electric motor

Delivery rate: 7,4 / 124 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 0.55 / 1.5 kW

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FOM series

Gear pump with electric motor

Delivery rate: 7,4 / 124 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 2,2 / 18,5 kW

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FAM series

Gear pump with electric motor for tank installation

Delivery rate: 0,6 / 124 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 0,25 / 18,5 kW

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FOM MG series

Gear pumps with magnetic coupling

Delivery rate: 0,6 / 124 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 0,25 / 18,5 kW

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Series i

Gear pumps with speed control

Delivery rate: 0,6 / 148 l/min
Viscosity: 1,4 / 2.500 mm²/s
Performance: 0,25 / 18,5 kW

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G series

Gear pumps with spur gear motors

Delivery rate: 0,6 / 124 l/min
Viscosity: 2.500 / 20.000 mm²/s
Performance: 0,18 / 18,5 kW

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FLMU 219

Self-priming service pump for filling pressure systems

Delivery rate: 4 l/min
Viscosity: 1.500 mm²/s
Performance: 0.37 kW

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LZ / LZGM series

Slow-running gear pumps

Delivery rate: 42 / 128 l/min
Viscosity: 80 / 10.000 mm²/s

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Technical Selection of Electric Gear Pumps

When selecting electric gear pumps, factors such as pump size, motor power, speed, coupling, material, and installation configuration are considered together. The key consideration is whether a compact unit, a variable-speed model, a low-speed gear pump, or a low-leakage variant is required.

Engine and Body

Electric gear pumps are designed as complete units with a motor and pump base. Depending on the application, compact motor-pumps, console units, units mounted on a pump base, or versions for tank installation may be suitable.

Viscosity and Speed Control

Viscosity affects speed, size, and motor power. Higher viscosities may require a slower-running drive or gearmotor. For variable flow rates, models with a variable-frequency drive or speed control are recommended.

Seals, Magnetic Couplings, and Safety

The seal, material, and safety features are selected based on the specific application. For low-leakage applications, models with magnetic couplings can be considered. Pressure relief or safety valves are included as needed.

FAQ

When is an electric gear pump a good choice?

An electric gear pump is a good choice when a ready-to-use unit with a motor, coupling, and pump housing is required. It is suitable for applications where a standard flanged gear pump with a free shaft end is not needed, but rather a fully assembled gear pump unit.

What is the difference between a gear-flange pump and an electric gear pump?

A gear pump with a flange is a pump head with an exposed shaft end that is combined with a drive supplied by the customer. An electric gear pump is a fully assembled unit that includes a motor, coupling, and pump housing. It is selected when a ready-to-connect solution is required.

When is a stainless steel electric gear pump required?

A stainless steel electric gear pump is used when cast materials are not suitable for the fluid—for example, in the case of corrosive, water-based, or non-lubricating fluids. Separate stainless steel models are available for such applications, some of which feature PEEK gears depending on the fluid.

Which motor is best suited for viscous fluids?

For higher viscosities, the speed, size, and motor power must be appropriately selected. A low-speed drive or a gearmotor is often recommended to ensure that the gear pump is reliably primed and not subjected to unnecessary mechanical stress.

When is an electric gear pump with a variable-frequency drive a good choice?

An electric gear pump with a variable-frequency drive is a good choice when the flow rate needs to be adjusted. By controlling the speed, the flow rate can be adapted to the process, for example in dosing, recirculation, or supply applications.

Electric gear pumps – Ready-to-use units

Series

FLM series

FKM series

FOM series

FAM series

FOM MG series

Series i

G series

FLMU 219

LZ / LZGM series

Technical Selection of Electric Gear Pumps

Engine and Body

Viscosity and Speed Control

Seals, Magnetic Couplings, and Safety

FAQ

Products

Linn-Pumpen GmbH