extrex® RV/RB

High performance gear pump for rubber extruder

When it comes to manufacturing profiles and dealing with strainers, high requirements are placed on pumping consistency and extrusion lines. The new gear pump series extrex⁶ RV/RB from MAAG raises the performance of gear pumps for elastomer extrusion to new levels in terms of both economy and processing technology. Product quality is guaranteed by a stable discharge, the lowest tolerance deviations and achieving process stability in quick time.

Suitable for


Technical data
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  • Optimized flow channels
  • Highly efficient self-cleaning properties
  • Low pulsation pumping even at high differential pressures
  • Compact design
  • Gentle pressure increases
  • Minimal temperature increase
  • Leak-free operation depending on compound sensitivity possible

A range of typical pumping media (EN)

Butadiene rubber
Chloroprene rubber
Ethylene-propylene-terpolymer rubber
Nitril-butadiene rubber
Styrene-butadiene rubber
Natural rubber
Others upon request


Various tolerance classes
Choice of materials for every application
Shaft cooling with contact protection
Bearing lubrication with internal recirculation

Technical Data

Differential pressure [bar]
extrex RV: max. 250 | extrex RB: max. 350
Viscosity in Pas
max. 30.000
Temperature in °C
max. 130
Alloy steel
Gear shafts
Nitrided tool steel, prepared for shaft cooling
Shaft Seals
Alloy steel
Pump heating
Liquid temperature controlled