Aerostatically sealed chamber as a robust aerostatic bearing

Mikael Miettinen*, Valtteri Vainio, René Theska, Raine Viitala

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
113 Downloads (Pure)


Aerostatic bearings are typically used in ultra precision and high speed applications in controlled environments. The present study expands this operating domain. The present study experimentally investigates the performance and feasibility of a novel design for a robust air bearing consisting of an aerostatically sealed pressurized volume. A suitable operating domain for the bearing system was characterized based on measurements of the load capacity, friction moment, chamber flow, and seal flow rate at various opposing surface run-outs and supply pressures. The highest measured load capacity was 18.86 kN at 0.330 mm run-out, and decreased to 12.22 kN load at 3.804 mm run-out. The study provided corroborative evidence on the feasibility of the proposed chamber based bearing design.

Original languageEnglish
Article number107614
Number of pages10
JournalTribology International
Publication statusPublished - Sept 2022
MoE publication typeA1 Journal article-refereed


  • Aerostatic Bearing
  • Deflection compensation
  • Porous restrictor
  • Robust design


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