Rotordynamics and Aerodynamic Air Bearings for Oil-Free High-Speed Applications
Aerodynamic foil bearings offer a reliable oil-free solution for supporting high-speed rotors under extreme temperatures. The flexible foil structure compensates for thermal and mechanical deformation as well as manufacturing tolerances, ensuring stable operation even with higher rotor eccentricities. The effective damping characteristics of the foil prevent self-excited vibrations across the entire speed range. SADAP supports you with expert knowledge and cutting-edge technologies to help you implement customized oil-free bearing solutions.
Foil Bearings vs. Air Bearings – Choosing the Right Solution for Your Application
Foil bearings are particularly suited for applications with eccentric shaft motion, such as in the automotive sector. The built-in damping of the foil structure improves system stability and allows for easier manufacturing tolerances. In contrast, air bearings without a compliant structure are preferred in precision applications such as medical devices or micromachining, where minimal shaft movement is critical. SADAP advises you based on the latest technological developments to optimize the performance and efficiency of your systems.
Schematic view of an aerodynamic foil bearing with flexible support foil and surface coating for enhanced wear resistance
Design and Engineering Services for Air and Foil Bearings
Air Bearing Design Using Digital Tools
SADAP provides tailored engineering services for air and foil bearings using high-precision digital modeling tools. We optimize oil-free bearing systems for machinery such as fuel cell compressors and ensure optimal performance under both static and dynamic operating conditions.
Learn more about our air bearing design services.Validation, Identification (e.g., foil stiffness) and Quality Control
SADAP offers specialized vibration testing and dynamic analysis services for the validation, identification, and quality assurance of air and foil bearings under realistic operating conditions. Using standard-compliant vibration testing (DIN EN 60068) and high-resolution mechanical impedance analysis (ISO 7626), we obtain precise data on dynamic behavior and structural stiffness—especially relevant for foil bearing systems. Both prototypes and production parts are tested to ensure reliability, performance, and system integration.
Our specialized test services include:
- Vibration testing per DIN EN 60068
- Mechanical impedance analysis per ISO 7626
- Experimental modal analysis for rotor systems
- Damping optimization for foil bearing structures
Training and Knowledge Transfer
Expand your team's expertise in air bearing technologies with SADAP's customized training programs. Our tailored sessions are designed to boost your development, manufacturing, and implementation capabilities for oil-free bearing systems.
- High-performance training partnerships
- On-site team training
- Specialized courses for development engineers
Our courses cover all aspects of air bearing technology, including rotordynamic analysis, bearing testing, and data evaluation from experimental and simulation-based investigations.