Air-cooled heat exchangers

Air-cooled heat exchangers use the ambient air as coolant rather than liquids. The core element of an oil-air cooler is an aluminium cooler block in rod or plate design. The medium to be cooled is guided through the cooler block in one or more channels, depending on the flow rate, and cooled by the ambient air conveyed by the fan wheel. Air-cooled heat exchangers are predominantly used as additional coolers in the peak load range and wherever water is not available or piping would be too expensive.

FUNKE oil-air cooler OKAN series

For use in mechanical and system engineering, in construction machines and in special-purpose vehicle construction, FUNKE supplies oil-air coolers from the OKAN series. They are available in 20 sizes with up to 6.2 kW/K cooling capacity and in one- or three-way design, with different graduations as needed. This extensive range of oil-air coolers is flexible enough to cater to the majority of applications.

Project-based custom designs are regularly developed for systems engineering and for series manufacturers. Accordingly, special designs for marine and offshore applications are possible, as are versions for use in potentially explosive atmospheres.

Technical data, OKAN oil-air coolers

  • Max. cooling capacity: approx. 6.2 kW/K
  • Max. operating temperature: for oil 100°C, for emulsion 90°C
  • Max. operating pressure, static: up to 26 bar
  • Ambient temperatures: -20°C to +40°C
  • Cooling grid areas: 0.05 to 1.44m²
  • Fan drives: three-phase motor, DC motor, hydraulic motor
  • 1- and 3-way design

Equipment options

  • Complete system incl. temperature control and pump
  • Explosion-proof design
  • Seawater-resistant surface protection
  • Air filter for cooling element


We have the thermodynamic solution for your application!

Contact our team of experts and arrange a consultation appointment!

Contact us