Internal Gear Pumps QXEH – up to 280 bar with One Gear Stage

Description

The QXEH series consists of single-stage pumps for both constant and variable speeds. Thanks to the use of high-precision gear parts with a pinion shaft (pinion and shaft as one component), extremely low pulsation levels are produced even at low speeds. In highly dynamic servo drives with reversing operation, the QXEH pumps offer maximum reliability.

In the overall product portfolio of QX internal gear units, the QEXH – as a single-stage pump with a maximum operating pressure of 280 bar – is positioned between pressure ranges 2 and 3 of the QX internal gear pumps.

Advantages

  • Compact, non-compensated design
  • Very low nois levels
  • Pressure and flow pulsationsare minimal, thanks to pinion-shaft technology
  • Field-proven in both constant- and variable-speed drives
  • First-rate reliability at both high and low speeds and in reversing operation
  • Long service life even under highly cyclical loading

Technical Data

Type Continuous pressure max.
bar
Peak pressure
bar
Displace­ment
cm³/rev
Speed max.
rpm
Volumetric efficiency
%
QXEH32 250 280 10…15,6 4600 > 95
QXEH42 250 280 20,4…32,4 4000 > 95
QXEH52 250 280 39,3…63,7 3200 > 95
QXEH62 250 280 80,2…124,8 2700 > 95
QXEH62-160 160 200 160,5 2300 > 95

Applications

  • Hydraulic power units in general
  • Plastics-processing machinery
  • Pressure die-casting machines
  • Hydraulic presses, etc.
  • Wind-power plants

Options / Accessories

  • Bolt-on valves
  • Pipe flanges