Foil Bearings

Foil bearings offer performance and efficiency unmatched by conventional bearings for high-speed machinery.  Ideally suited for hostile environments or oil-free systems, these bearings are more resilient and tolerant to misalignment than solid-pad gas bearings.  MSI’s hydrodynamic (self-acting) compliant foil bearing generates its own load-carrying film from the rotation of the shaft it supports.  A smooth top foil forms the bearing surface, and a flexible “bump” foil provides this surface with controlled, resilient support. This proprietary design ensures a “self-adjusting” bearing with inherent internal damping that adapts to shaft misalignment, variations due to tolerance buildups, centrifugal and thermal shaft growth, and differential thermal expansion.  Large or small, our foil bearings can provide the performance you need for specialized high-speed or extreme-temperature machinery.  Contact an engineer to learn more.


  • Air-cycle machines
  • High-speed motors
  • Oil-free compressors
  • Solar chillers
  • Gas turbines
  • Fuel cell blowers
  • Cryocompressors
  • Turbochargers
  • and more…