The new double-stage air compressors of the DS series from AERZEN compress absolutely oil-free in accordance with ISO 8573-1, class 0 and guarantee outstanding performance in almost all application areas at differential pressures between 5.5 and 10.5 bar. Applications in sectors such as the food and beverage industry, chemical and process engineering as well as medical and pharmaceutical technology place the highest requirements on compressed air quality. After all, impurities in the compressed air such as dust, moisture, oils or microorganisms have an impact on product quality and the production process. With its DS series, AERZEN now offers new smart and efficient air compressors for oil-free compression.
Exceptionally high energy efficiency
The new double-stage screw compressors are available in nine sizes from 55 to 315 kW and volume flows from 180 to 2,920 m3/h. They reliably provide 100% oil-free process air (certified according to ISO 8573-1 Class 0) and achieve energy savings of up to 12% compared with the best-performing compressor models currently available on the market. This leap in efficiency is achieved by innovative bare-shaft compressors with new, highly efficient 4+6 rotor profiles in the low and high-pressure stages and motors with energy efficiency class IE4 or IE5. A variable frequency drive is integrated and guarantees optimum operation with a large turndown. The DS series is equipped with a direct drive using a coupling and gear drive for optimum drive efficiency and has stainless steel rotors in both stages to prevent corrosion.
Maximum reliability and durability
The compressed air packages have been designed for maximal reliability and durability, and they achieve outstanding performance even in extreme climatic conditions. An effective sealing concept for the drive shaft and conveying chamber minimises natural seal wear. The smart oil concept with oil cooler, electrical oil pressure switch for a constant oil level check and a mechanical oil pump contribute to the high level of robustness and energy efficiency. The oil-lubricated anti-friction bearings with pressure lubrication achieve a service life of at least 40,000 hours.
Maximum energy efficiency, quality, durability and reliability, paired with minimal maintenance effort/costs and low noise levels - these are the new double-stage, oil-free screw compressors in the DS series. The process air generation is of course PFAS-free, without compromising on performance and durability. Thanks to the extremely compact design, the machine footprint is small. The smart package concept even facilitates side-by-side installation, as maintenance can be carried out from both the operating and the rear sides. The entire package can easily be transported using a pallet truck, forklift truck or crane.
