Screw blowers up to 37 kW – DBS 221 (Maximum capacity up to 23 m³/min; pressure differential (gauge pressure) up to 1,100 mbar; vacuum up to −550 mbar)
Efficient at the push of a button
Efficiencyisn’t just a promise with Kaeser’s SIGMA Profilescrew blowers. As ready-to-use, plug-and-play turnkey solutions, these low-maintenance blower systems deliver extreme efficiency at the push of a button. In addition, the screw blowers are designed to be exceptionally space-saving, can be easily controlled remotely and independently, and are compatible with Industry 4.0.
Thelow energy consumptionand continuous operation of Kaeser’s screw technology pay off in municipal and industrial wastewater treatment, flotation, fluidization, and fermentation.
Asset Information:
- 7.5 kW to 250 kW
- Capacity from 3 to 160 m³/min
- Pressure difference: 300 to 1,100 mbar
Your Benefits
- Maximum Efficiency
Kaeser screw blowers are highly efficient across a wide capacity range. Their outstanding efficiency enables savings of up to 35 percent compared to conventional blowers. - Real-Time Operating and Status Data
The integrated SIGMA CONTROL 2 control system ensures efficient real-time control and monitoring of operating and status data. Thanks to its wide range of communication options, conducting an energy audit in accordance with ISO 5001 is a breeze. - Low installation costs
The ready-to-connect blowers are fully equipped with sensors and emergency stop switches, filled with oil, and certified. This reduces investment and costs during planning, construction, documentation, and commissioning.
Efficiency as a Driving Force

KAESER screw blowers are equipped with Super Premium and Ultra Premium Efficiency motors (IE4/IE5 and IES2), which offer enormous energy-saving potential thanks to their high efficiency. Saving money has never been easier.
Optimized specific power

The highly efficient drive system, the very dense screw profile, and the virtually constant specific power curve across the wide control range (yellow line) result in significant energy savings at every operating point.
Product Details
Management and Monitoring for Greater Efficiency

SIGMA CONTROL 2 ensures efficient control and monitoring of the blowers. Numerous interface options enable fast communication. Required or actual values of process variables or other messages can thus be easily linked and displayed. All common communication technologies are supported. If the remote control fails, SIGMA CONTROL 2 takes over via automatic or manual mode and keeps the process running.
Garantie van vermogensgegevens

To ensure that the projected savings are realized, Kaeser specifies the effective total power consumption as well as the usable capacity in accordance with ISO 1217, Annexes C and E, respectively, with the applicable tight tolerances.
Toerenregeling en EMC-certificering
START CONTROL (STC)
The plug-and-play version with an integrated star-delta starter and constant-speed operation features high-quality safety technology, overcurrent protection, and rotating-field monitoring. SIGMA CONTROL 2 and a safe emergency stop system round out the system. Simply connect it to the power grid and get started right away.
SIGMA FREQUENCY CONTROL (SFC)
The SFC frequency converter allows the capacity to be variably adjusted to match the process's demand as the blower speed changes. Everything is programmed and configured at the factory so that the complete, ready-to-connect machine can be put into service immediately.
EMC-certified installation
Of course, the SFC control cabinet and SIGMA CONTROL 2, as individual components, as well as the complete compressor system, have been tested and certified in accordance with the EMC guidelines for industrial power grids as specified in EN 55011.
Technical Specifications
You can find the technical specifications in the brochure.
Downloads
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CBS, DBS, EBS, FBS, GBS, and HBS Series Screw Blowers – Brochure (PDF, 2.22 MB)
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Schroefblowers FBS- en GBS-serie – Brochure (PDF, 446 KB)