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Bearings

Special fluid bearings

Design and manufacturing of maintenance-free radial and axial bearings with theoretically unlimited lifetime and exceptional operating precision and stability. Clean bearings applications eliminate the risk of contamination of the liquid or gaseous process media or the external environment with oil lubricants.

Low-viscosity hydrodynamic bearings

About

Low-viscosity hydrodynamic bearings, particularly tilting pad journal bearings, excel in durability, robustness, and performance. Their outstanding bearing stability, extended lifespan, and high start-stop cycle endurance make them ideal for high-performance and extreme applications. These bearings are used to be lubricated with process media, eliminating the necessity for additional lubrication and the associated risk of leakage and high system complexity.

Technical parameters

Operational speed

Up to 80 000 rpm for canned systems with electrical drives
Up to 200 000 rpm for gas-sealed electrical drives
Up to 400 000 rpm for remaining systems

Diameter
6 – 60 mm
Load radial/thrust
Up to 230 N
Working temperature
Up to 660 °C

Application

  • E-pump [power: 12 kW, speed: 80 000 rpm]
  • Ammonia thermal management pump
  • sCO2 compander

Advantages

  • Ultra-long lifetime
  • Greaseless lubrication with process media eliminating contamination risks
  • High damping capacity
  • Applicable in critical technologies and extreme environments
Gas aerodynamic bearings

Gas aerodynamic bearings

About

The aerodynamic tilting pad journal bearings have the highest durability and longevity of all gas-lubricated bearings. Excellent bearing stability parameters, long life, and high start-stop cycle endurance predetermine them for high performance and extreme applications, working with various gases and no need for additional pressure. Their applications maintain the longest service intervals possible and due to their flexible configuration and used materials, can also be adapted to extreme high temperature and external vibration applications.

Technical parameters

Operational speed
Up to 400 000 rpm [limited by subsonic bearing speed]
Diameter
6 – 60 mm, custom design considering factors like speed, axial force, working medium, and machine design
Load radial/thrust
Up to 230 N
Working temperature
Up to 230 °C

Application

  • E-compressor [power: 10kW, speed: 120 000 rpm]
  • E-turbocharger [power: 6kW, speed: 160 000 rpm]
  • sCO2 start compressor

Advantages

  • Ultra-low friction
  • Ultra-high rotational speeds
  • High stability
  • Applicable in critical technologies and extreme environments
  • Maintenance and lifespan unaffected by fluid parameters
Gas aerostatic bearings

Gas aerostatic bearings

About

The Aerostatic bearings have an excellent load capacity at low speeds and zero-wear start-ups. The operational conditions require continuous gas pressure feed while they offer minimal passive resistance and  the capability to support loads even in the absence of relative motion between their sliding surfaces. They provide good stability and handle high loads. They can also operate complementary to aerodynamic bearings at start-up phases.

Technical parameters

Operational speed

0 – 200 000 rpm

Diameter
6 – 60 mm
Load radial/thrust
Up to 2000 N
Working temperature
Up to 230 °C

Application

  • Test drive and rig for measurement of bearing and sealing parameters
  • E-pump [power: 12 kW, speed: 80 000 rpm]
  • sCO2 compander

Advantages

  • Operational environment free of particular contamination
  • Ultra-low friction losses
  • Service life limited only by working gas cleanliness
  • Zero wear at start-up