ISO 22423:2019
(Main)Foil bearings — Performance testing of foil thrust bearings — Testing of static load capacity, bearing torque, friction coefficient and lifetime
Foil bearings — Performance testing of foil thrust bearings — Testing of static load capacity, bearing torque, friction coefficient and lifetime
This document specifies the method for comparing performance evaluation results for a foil thrust bearing that supports load with aerodynamic force generated by the rotation of a driving shaft and lubricates using air, not lubricating oil. The test procedure explained in this document measures and evaluates the static load capacity, bearing torque, friction coefficient and lifetime of the foil thrust bearing and compares the test results to those for different test conditions. The measured static load capacity can be varied depending on the capabilities of the test device used.
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 22423
First edition
2019-01
Foil bearings — Performance testing
of foil thrust bearings — Testing of
static load capacity, bearing torque,
friction coefficient and lifetime
Reference number
ISO 22423:2019(E)
©
ISO 2019
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ISO 22423:2019(E)
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© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO 2019 – All rights reserved
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ISO 22423:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols . 2
4.1 Basic characters — Roman alphabet . 2
4.2 Basic characters — Greek alphabet . 3
4.3 Additional signs — Subscripts . 3
5 Purpose of test . 3
6 Test conditions . 3
6.1 General . 3
6.2 Design of test apparatus . 4
6.3 Installation of sensors. 4
6.4 Test specimens . 4
7 Test methods . 5
7.1 Principle . 5
7.2 Start–stop test cycle and evaluation of the take-off speed . 5
7.3 Calculation of bearing torque and load .
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