Oil-free VFD Screw Air Compressor

UDL-VFD Series

Working Pressure 7.5-8.6 [bar] 109-125 [psig]
Free Air Delivery 7.7-12.6 [m3/min] 272-445 [cfm]
Working Power 55-240 [kw] 74-332 [hp]

Experience the benefits of clean, oil-free air with UCS Fixed-Speed Low-Pressure Air Compressors designed for exceptional performance and efficiency. Our compressors utilise two screw rotors to compress air, which is passed through a water-air separator to remove moisture. With no oil injection for cooling, we’ve equipped our compressors with pre-coolers, inter-coolers, and after-coolers to ensure the compressed air meets the desired outlet temperature.

Our high-performance shaft seals prevent lubricating oil from leaking into the compressed air, guaranteeing oil-free air for critical applications. UCS Fixed-Speed Low-Pressure Air Compressors are the perfect solution for industries that demand high-quality, oil-free air, such as pharmaceuticals, food and beverage, and electronics manufacturing.

Upgrade your operations with UCS Fixed-Speed Low-Pressure Air Compressors and enjoy the advantages of a reliable, efficient, and oil-free compressed air solution tailored to your unique requirements. Experience the difference with UCS, where quality and performance come together to provide the ideal solution for your compressed air needs.

Why Choose UCS Oil-Free Screw Air Compressor

High Efficiency and Energy Saving

  • The Variable Speed V-type compressor adopts IPM permanent magnet motor with two-stage compression, which is lower than specific power.
  • Hitachi technology – a better explanation of the logical function of energy saving.
  • TUV & GC Certified Class 0

The Optimized Operating System

  • The ITCS controller with rich functions makes the operation more labour-saving and timesaving. A simple connection can realize the joint control of 2 air compressors.
  • Through several controllers to central control multiple air compressors.

Thermosetting Coating

The surface of the rotor and the inner wall of the air end housing coated with the thermosetting coating of molybdenum disulfide. Which effectively prevent corrosion and reduce internal leakage by controlling the clearance.

Easy Maintenance

The maintenance is simple, and the interval cycle is long.

Caring for The Environment

Standard configured oil mist cleaner can relieve the pressure inside the gearbox and ensure the cleanness of the workshop.

Low Noise

Reduce pulsating noise and improve sound quality.

Food and Beverage Industry

The high-temperature compression environment of oil-free air compressor can reduce the content of microorganism in the compressed air. Besides, no oil brought into the whole compression process, which significantly reduces the risk of contamination of food and beverage products in the production process.


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The Pharmaceutical Industry

The demanding pharmaceutical industry USES 100 per cent oil-free compressed air throughout its manufacturing process. The quality of Compressed air is an essential part of GMP certification.


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The Chemical Industry

For applications in the chemical industry, high purity compressed air must be used at every step of the process, from the first step of the production process to the semi-finished products and the final product formation, to minimize the risk of stop-production.


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The Power Industry

The quality of the compressed air is critical and must not neglect. Therefore, when the compressed air applies to the instrument of the power system, most designers will choose oil-free air compressor.


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Core Strengths of UCS Compressor

Employ Hitachi Designs and Manufactures Independently

Dry compression is adopted, no lubricating oil used in the compression chamber, and the compressed air is 100% oil-free. Also, the shaft seal using a stainless-steel sealing ring, will not produce carbon dust.


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Hitachi Air End

Imported original Hitachi air end to ensure high quality and high performance.


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Efficient Two-Stage Compression

Lower than specific power of the two-stage compression, improve the cooling performance, reduce the internal management compression, performance increase by 5-10%.


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Dry Oil-Free Technology

Since UCS oil-free screw air compressor came into the market, more than 100,000 pairs of oil-free rotors have produced and applied to all walks of life, mostly pharmaceutical, food and beverage, electronics and those industries with high requirements for compressed air quality.

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