QXM Series Internal-Gear Drive Units

The QXM Series internal-gear drive units from Bucher Hydraulics use four-quadrant operation to work as a pump and a motor.

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Bucher Hydraulics' QXM Series internal-gear drive units are designed for four-quadrant operation, enabling them to work as a pump and as a motor.

  • Offers maximum speed of 13,000 rpm
  • Features robust and long lifespan due to elimination of ball and roller bearings 
  • Allows building of 'pump-regulated control systems' that deliver substantial energy benefits
  • Uses only the amount of energy that is needed
  • Offers energy recovery capabilities in lifts, presses, cranes and similar applications
  • Generates less heat, reducing the quantity of oil used and size of the entire hydraulic power unit including cooler
  • Some applications can acheive 90% reduction in the oil quantity
  • Energy savings of up to 60% are possible
  • Available for pressures up to 320 bar
  • Can be supplied in a high-speed design as a special model
  • Features high level of torque stability
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