Internal Gear Unit for Motor/pump Service QXEM

Description

The QXEM series consists of single-stage motors for 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. The motors QXEM are characterized by highest operational safety in highly dynamic servo drives with reverse mode.

One of the central points in the QXEM series is its symmetric construction, with identical high and low pressure areas. With special metering grooves and lubrication systems as well as two same-size pressure-tight connections, the design is specially optimised for 2 and 4 quadrant modes and is thus ideally suited to both directions of rotation at high and low pressures.

Advantages

  • Compact, non-compensated design
  • Very low noise levels
  • Pressure and flow pulsations are minimal, thanks to pinion-shaft technology
  • Field-proven in both fixed- and variable-speed drive
  • First-rate reliability at both high and low speeds and in reverse mode
  • Long service life even under highly cyclical loading

Technical Data

Type Operating pressure (continous) up to
bar
Operating pressure (intermittend) up to
bar
Displacement
cm³/rev
Speed max. pump
rpm
Speed max. motor
rpm
QXEM2 210 250 5,1 - 15,6 3250 6000
QXEM3 210 250 10 - 32,3 3050 5500
QXEM4 210 250 20,3 - 63,5 2900 5000
QXEM5 210 250 39,2 - 124,6 2500 4500
QXEM6 210 250 80,1 - 248,8 2250 4000
QXEM8 210 250 162,7 - 498,5 1600 3500

Applications

  • Injection molding machines
  • Hydraulic presses
  • Waste compactors
  • Die casting machines