Oil supply bearing chamber


A test rig is being set up at the Institute of Thermal Turbomachinery to investigate the oil supply to the bearings in a typical engine bearing chamber. With its help, numerous parameters can be examined under engine-relevant operating conditions with regard to the efficiency of the feed and the formation of droplets. Sufficient optical access points for the use of optical measurement technology are available to assess droplet formation. The test bench also has the option of testing complete bearing units under real conditions.


  • Variable use of different rotor geometries
  • Temperature measurement in the rotating system using a telemetry unit
  • Max. Speed: 11000 1/min
  • Rotor diameter: up to approx. 240mm
  • Oil temperature: 20-120°C (150°C)
  • Max. Oil pressure: 15bar
  • Max. Oil quantity: 20 l/min
  • Max. Bearing preload of the bearing to be tested: up to 50kN

Measuring technology & control

  • 12x type K thermocouples (rotating)
  • Type K thermocouple (static)
  • Pressure sensor
  • Coriolis mass flow meter
  • Torque measuring shaft
  • Servo motor + stepper motor
  • Data acquisition using LabView