09/17/2025
AERZEN has introduced two additional sizes for the Delta Hybrid with direct drives, thereby consistently pursuing its course toward even more efficient and sustainable compressed air supply. The innovative screw blowers are digitally ready and impress with optimum energy efficiency, minimum footprint, maximum user-friendliness and absolute process reliability.
AERZEN Delta Hybrid screw blower.
With the new D23S and D31S models, AERZEN is expanding its successful Delta Hybrid series with two sizes that are far ahead of their time in terms of efficiency. The centerpiece is the direct drive with gear wheels, known from the D50S, which ensures greater efficiency. This is complemented by the optimized rotor profiles, which further reduce energy consumption and improve the acoustic properties at the same time.
The IE5 motors are a particular highlight – the innovative synchronous reluctance permanent magnet motors significantly exceed the efficiency of IE4 motors and set new standards in energy savings, even in the partial load range. This underlines AERZEN's leading role in compressed air technology and indicates how high performance and sustainability can be successfully combined.
Both sizes convey 100% oil-, absorbent- and PFAS-free process and compressed air (oil-free operation according to ISO 8573-1, class 0) and offer a very large turndown ratio of 1:5. One VFD is already integrated and ensures precise and stepless adjustment of the volume flow to the current demand. The packages are designed for maximum reliability and durability and guarantee absolute process safety – thanks to bearings with a theoretical service life of more than 60,000 operating hours, pressure lubrication of the anti-friction bearings, extended oil change intervals of up to 16,000 operating hours and the use of an oil level switch to actively monitor the oil level. The drive components are completely maintenance free.
Delta Hybrid packages are fully pre-assembled and pre-programmed and are therefore immediately ready for connection and operation. Their extremely compact type of construction with a footprint of only 1.68 m2 allows for a particularly space-saving installation, and even a side-by-side installation of several machines can be easily implemented. Operation and maintenance are performed exclusively from the front and rear. They have a maximum sound pressure level of 73 dB(A). Delta Hybrid screw blowers can be used globally, even in zones with extreme ambient temperatures of up to +122°F (+50°C).
The Delta Hybrid combines state-of-the-art drive technologies with exceptional energy efficiency (energy savings of up to 37% compared to conventional blowers), optimized acoustics and extreme compactness. It impresses with above-average durability and reliability, easy installation and commissioning, minimum maintenance costs and quiet operation – combining all the properties that modern users expect from a top-of-the-range solution. The new sizes D23S and D31S replace the belt-driven D25S and D30S and expand the series, which will, in the future, include the sizes D23S, D31S, D40S, D50S, D65S and D80S.
About AERZEN
The AERZEN product portfolio includes rotary lobe compressors, positive displacement blowers, turbo blowers and screw compressors and, in addition to standard products, also offers customized special solutions. Digital services can be used to increase efficiency, availability and productivity in a sustainable and future-oriented manner. In addition, AERZEN After Sales Service offers a full range of services – from full maintenance contracts to repairs and modernizations of existing plants. For more information, visit https://www.aerzen.com.
