compressor Oil-free screw

Oil-free screw

Oil-free screw compressors with a delivery track record of over 2,500 units all over the world

Since starting to manufacture and provide oil-free screw compressors in 1955, KOBELCO has delivered over 2,500 units to users all over the world, representing a large number of applications such as oil/gas, oil refineries, chemicals, and ironmaking.


Oil-free (dry) screw compressors prevent oil contamination of the process gas. They can rotate at high speeds and are suitable for applications with large airflows and high compression ratios.


Product Description

  • Models with maximum airflow of 143,000 m3/h (for suction) and maximum discharge pressure of 45 bar(g) are available.
  • No restrictions on supported gases. Suitable for gases with variable molecular weights*1, polymer-generating gases*2, dirty gas*3, dusty gas*4, and others.
  • Any of several shaft seal systems can be selected to match the application, ensuring long-term stable operation.
  • Lineup includes advanced dry screw compressor models that reduce cost and save space.
  • Highly reliable and efficient rotary lobe blowers are available, manufactured primarily for use in DRI (direct reduced iron) plants.

Main Applications

  • Offshore/onshore vapor recovery units
  • Petrochemical process (PP/PE, styrene monomer, butadiene)
  • Hydrogen process
  • PP/PE recovery
  • Off-gas for oil refineries
  • Cokes oven gas
  • Soda ash

Free product information and other useful materials are available.

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