• slidebg1
    GTB series with ceramic anti-friction bearings;
    flange or foot mounted motor up to 450 kW rated power
  • slidebg1
    GTH series with hydrodynamic multi-pad bearings
    for high flow and pressure applications up to 2.2 MW motor power
    and 1.5 bar differential pressure
  • slidebg1
    Effective combination
    Variable Inlet Guide- and Discharge Diffuser Vanes
    for continuous, optimal efficiency and wide turndown.
  • slidebg1
    Plug & Play
    Factory mounted and functionally tested - with all components
    included: Motor center with soft, direct or VFD-starter, local control,
    inlet filter/ silencer, cone diffuser and blow-off valve.

Our full product portfolio

Our integrally geared centrifugal turbocompressor line features six distinct frame sizes up to 2.2 MW motor power, customized to your project requirements. The frame sizes are optionally available in a plug&play package with all auxiliary parts fully enclosed and ready to start (Compact Enclosure), or with a traditional assembled modular enclosure.

NTT Advantages & Features

  • Versatile with high airflow turndown of 100-40%
  • Highest efficiency over entire turndown range
  • Power optimization with 2-point regulation control
  • Offers more than 20 years equipment life
  • Reliable, robust mechanical design for maximum up-time
  • Proven technology in harsh environments
  • Utilizing industry-standard components available on the open market

Design your Unit

Use our online aeration customer portal to design your compressor and download all required pre-engineering documentation.

Customer portal

Our Product Naming explained


The name consists of four parts:

GTGeared Turbo Compressor
BIndicates if the compressor is equipped with hybrid ball bearings 'B' or hydrodynamic bearings 'H'
T20Describes the frame size Turbo 20 (10,20,30,40,50,60)
XZThe final naming code 'XZ' (X, Y, XY, XZ) describes the compressor regulation control, here Diffuser with low frequency VFD