Variable speed rotary screw compressor

EKO 55-90 PM

The EKO 55-90 PM series delivers high‑performance and energy‑efficient compressed air for demanding industrial applications. Covering 55 to 90 kW, this range of oil‑injected rotary screw compressors combine robust construction, advanced variable speed control and intelligent connectivity to ensure reliable operation and reduced total cost of ownership.

eko75-VST

Energy Efficiency

Variable Speed Drive technology continuously adapts compressor output to real air demand, preventing energy losses during load and idle operation and reducing overall energy consumption.

Robust Design

Next‑generation screw elements, casted oil separator vessels and heavy‑duty filtration protect internal components and support long service life in industrial environments.

Smart Control

The ES 4000 graphical controller provides intuitive touchscreen operation, connectivity and multi‑compressor communication for optimized energy use and system control.

Advanced variable speed technology for reliable industrial air

The EKO 55-90 PM compressors are designed to precisely follow fluctuations in compressed air demand. Using advanced Variable Speed Drive technology, the system continuously monitors air requirements and adapts motor speed to maintain stable pressure. This prevents energy losses during load and unload cycles, significantly improving overall system efficiency and reducing operational costs.

Built with a new generation screw element and high‑efficiency motor, the range delivers improved performance with reduced internal pressure losses. The integrated infographic controller simplifies operation and enables monitoring, programming and coordination between multiple compressors. Durable components and optimized cooling systems ensure long service life and consistent output across industrial applications.

eko75-VST

The EKO 55-90 PM range features variable speed screw compressors equipped with Permanent Magnet (PM) motor technology, delivering high efficiency and precise control across a wide operating pressure range up to 13 bar. This combination ensures stable performance and optimized energy use, especially in applications with fluctuating air demand.

With motor power from 55 to 90 kW, the range offers low noise operation and compact dimensions, making installation straightforward even in space‑constrained environments. All models are available in air‑cooled versions, with optional configurations, and are designed to maintain consistent air delivery while minimizing energy consumption throughout operation.

Maintenance of the EKO 55-90 PM is designed to be simple and efficient thanks to its accessible layout and removable panels. All key service components can be reached quickly, minimizing maintenance time and reducing operational interruptions. The robust internal design also supports long service intervals and lower lifecycle costs.

The ES4000 control system helps track operating hours, service intervals and system status. It provides alerts and shutdown warnings to protect the machine and ensure timely servicing. This proactive maintenance approach improves reliability and extends compressor lifetime.

The Variable Speed Drive system enables the compressor to continuously adapt to real air demand, eliminating inefficiencies associated with traditional load/unload operation. This results in energy savings of up to 36% and contributes to a reduction in total cost of ownership by up to 25% over time.

By maintaining a stable pressure band and avoiding unnecessary energy consumption, the EKO 55-90 PM ensures consistent production efficiency. Combined with improved airend performance and optimized motor efficiency, the system reduces energy waste while maintaining high output and system reliability.

Technical informations

 

Model Capacity (m³/min) Motor power Noise level
4 Bar 7 Bar 10 Bar 13 Bar kW/HP dB(A)
EKO 55 PM 11 - 1,7 11 - 1,7 9,55 - 1,7 7,6 - 2,48 55/75 70
EKO 75 PM 13,2- 1,7 13,18 - 1,74 11,8 - 1,72 10 - 2,55 75/100 72
EKO 75S PM 15,8- 2,8 15,6 - 2,8 14 - 2,9 11,5 - 2,9 75/100 71
EKO 90 PM 18,15- 2,8 17,82 - 2,8 15,82 - 2,9 12,8 - 2,9 90/125 72

Protection Class: IP66

EKO 55-90 PM

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