The G series includes slow-running electric gear pumps with spur gear motors for highly viscous, lubricating media up to 20,000 mm²/s. Thanks to their low speeds, they deliver a consistent flow even with high viscosity and are suitable for pumping, circulation, and transfer tasks in oil and temperature control circuits.
Data sheet (incl. characteristic curves)
Displacement: 0.43 - 86.8 cm ³/rev
(corresponds to approx. 0.6 - 124 l/min at 1450 rpm)
Viscosity**: 2,500 / 20,000 mm²/s
Maximum pressure*: up to 100 bar
Engine power: 0.18 / 18.5 kW
Media temperature: -40 to +200 °C (depending on seal material and material pairing)
*Maximum pressure of the series. The permissible pressure of the selected pump size may be lower; the permissible operating points for flow rate, pressure, and speed can be found in the performance tables in the data sheets.
**Note on viscosity/speed:
Recommended pump speeds n depending on the kinematic viscosity ν:
– up to 350 mm²/s: approx. 1450 rpm
– up to 1,000 mm²/s: approx. 1200 rpm
– up to 2,000 mm²/s: approx. 800 rpm
– up to 3,000 mm²/s: approx. 650 rpm
– up to 6,000 mm²/s: approx. 450 rpm
– up to 10,000 mm²/s: approx. 300 rpm
– up to 20,000 mm²/s: approx. 200 rpm
Stator gear drives of the G series are used for these low speeds.
Oil supply systems for gearboxes, bearings and hydraulic units
Heating and temperature control circuits with heat transfer oil or synthetic media
Conveying high-viscosity lubricantsgreases, additives or resins
Transfer stations for oils and high-viscosity media from drums and containers
Circulation pumps in thermal process and process engineering systems
Dosing and feeding tasks in lubricant and plastics processing
Conveying in filter or cooling units with viscous media components
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LZ/LZ-GM series
