NxHE Series 90-260kW Two Stage Rotary Screw

90-260kW DIRECT ROTARY SCREW AIR COMPRESSORS

Nx Series compressors combine efficient operation with outstanding durability in the most demanding large industrial environments.

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TWO-STAGE COMPRESSION: SETTING THE STANDARD FOR ENERGY EFFICIENCY

Compared to single stage compressors, a two-stage is much closer to isothermal compression. This is achieved by injection of fresh oil between the stages which reduces the inlet temperature to the second stage. This lower inlet temperature increases efficiency by reducing the compression ratio between the stages. In addition, leakage between the rotor seals is significantly reduced resulting in outstanding volumetric efficiency.

Two-stage air compressors are closer to the ideal isothermal compression:
• Reduced leakage increases volumetric efficiency
• Saves 10-15% of energy compared to single stage compressors
• Increases flow 10-15% compared to single stage compressors
• Lower pressure differential increases efficiency and reliability
• Low heat load
• Easy maintenance and service
• Lowest life-cycle cost of any compressor on the market

Features and Benefits:

eCOOL® Technology
The ultimate in system protection and reliability
• Protects critical components from compressor-generated heat
• Compartmentalized air flow design and oversized aftercooler
• Extends component life and reduces downtime

Energy-efficient Two-stage Airend
Energy-saving and Eco-friendly
• Patented airend design integrates the first and second stage rotors into one airend
• Oil is injected between the first and second stages to cool the air and optimize efficiency
• Splitting the compression cycle into Two-stages reduces the axial and thrust loading to which improves service life of airend and bearings
• Two-stage compression significantly reduces noise

Effectively integrated overall design
Designed for low cost of ownership, easy service & little down time
• Safe, efficient air filter system
• Independent bearing lubrication
• High efficiency, easy-to-maintain oil separator
• IE3 high efficiency motor
• End face sealed to prevent leakage
• Connections utilize o-ring face seals for leak--free performance
• Asbestos-free gaskets protect operator health

Industry Applications

  • Woodworking
  • Industrial
  • Manufacturing
  • Printing
  • Packaging
  • Glass/Plastics
  • Power Generation
  • Textiles
  • Mining