OPENTECHNICAL PUBLICATION
OT-2026-000000375

Foil bearing and fluid machinery

Published: 2026-09-15T19:02:48.561590Z
Permanent URL: https://opentechnical.org/p/OT-2026-000000375
Categories: Industrial Motion & Power Transmission > Rotary Motion

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ABSTRACT

A housing, a top foil including a bearing surface that faces the rotary
member, and a bump foil placed between the top foil and the housing are
provided. The bump foil is configured to elastically support the top foil by
expanding in a rotation direction. When a load received by the bearing surface
from the rotary member is less than or equal to a threshold value, the bump
foil supports the top foil with a gap formed between the bump foil and the
housing and with a gap formed between the bump foil and the top foil. When the
load received by the bearing surface from the rotary member exceeds the
threshold value, the top foil and the bump foil locally form a plain bearing
to support the rotary member.

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OpenTechnical publication OT-2026-000000375
Published 2026-09-15T19:02:48.561590Z
https://opentechnical.org/p/OT-2026-000000375