For optimum efficiency and a higher flow rate
Our oil-injected rotary screw compressors from the DSD to HSD series demonstrate their strengths above all in large-scale industrial operations. When large volumes of compressed air are required for your production processes with high levels of energy efficiency and dependability, then rotary screw compressors up to 500 kW are the perfect choice.
The DSD series is optionally available with an add-on dryer, which protects your compressed air lines from corrosion and minimises the risk of damage to the product.
All models are available with or without variable-speed drive (SFC).
On the HSD series, two compressors are integrated within a single housing. Both units are equipped complete with airend, SIGMA CONTROL controller and individual cooling system. Due to their high flow rates, they are particularly well suited to applications in the automotive or steel industries.
Your benefits
- Service-friendly design:
Every system is designed for easy access to all service- and maintenance-relevant parts from the front side of the unit, which saves time and increases availability. - Integrated controller for greater efficiency:
The internal SIGMA CONTROL precisely matches the output of a compressor to the compressed air demand. thereby coordinating and optimising the interplay between compressed air generation and consumption. - Maximum flexibility with minimal space requirement:
With the HSD series, two compressors combined within a single enclosure save considerable space as compared to a single compressor unit with the corresponding performance. This system can be optimally adapted to different consumption scenarios, thereby minimising idling periods and increasing efficiency.
Our rotary screw compressors up to 515 kW in detail
A rotary screw compressor converts 100 % of the supplied electrical drive energy into heat. Up to 96 % of this energy can be recovered and reused for heating purposes. This not only reduces primary energy consumption, but also improves the company’s overall energy balance.
You can find out everything regarding areas of application and potential savings on our heat recovery page.
The integrated SIGMA CONTROL controller coordinates compressed air generation and ensures efficient, reliable machine operation. Moreover, it guarantees perfect interaction within the integrated system as a whole. All relevant components and operating states are monitored and evaluated. A multitude of communications functions are available to the operator, including the option of connecting the machine to other control technology (SCADA).
The purchase price and service costs account for just a fraction of the total lifetime cost of a compressor. Energy accounts for the lion's share of the system’s costs. As a leading compressed air systems provider, we offer individual planning tailored to your exact needs, an energy-efficient compressed air station and reliable service. We are there to partner you throughout the entire service life of your compressed air station.
- Intake filter
- Inlet valve
- Airend with SIGMA PROFILE
- IE4 drive motor
- Fluid separator tank
- Fluid separator cartridge
- Minimum pressure check valve
- Compressed air aftercooler
- Centrifugal separator
- Condensate drain (ECO-DRAIN)
- Compressed air connection
- Fluid cooler
- Eco fluid filter
- Electronic Thermal Management (ETM)
The air for compression passes through the intake filter (1) and the inlet valve (2) into the SIGMA PROFILE airend (3). The airend (3) is driven by a high-efficiency electric motor (4). The cooling oil injected for cooling during the compression process is separated from the air inside the fluid separator tank (5). The compressed air flows through the 2-stage oil separator cartridge (6) and the minimum pressure check valve (7) into the compressed air aftercooler (8).
Following cooling, the accumulated condensate is removed from the compressed air by the integrated centrifugal separator (9) and then drained from the system by the add-on ECO-DRAIN (10). The condensate-free compressed air then exits the system via the compressed air connection (11). The heat generated during compression is removed via the cooling oil by the fluid cooler (12) with water heat exchanger. The cooling oil is then cleaned by the ECO fluid filter (13). The Electronic Thermal Management (ETM) (14) ensures lowest possible operating temperatures. The control cabinet houses the SIGMA CONTROL 2 internal compressor controller and, depending on the machine version, the star-delta starter or frequency converter (SFC).