ISO/DIS 7905-4.2

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 7905-4
ISO/TC 123/SC 2
Plain bearings — Bearing fatigue —
Secretariat: DIN
Voting begins on:
Part 4:
2021-04-09
Tests on half-bearings of a metallic
Voting terminates on:
multilayer bearing material
2021-06-04
Paliers lisses — Fatigue des paliers —
Partie 4: Essais sur demi-coussinets en matériau antifriction
métallique multicouche
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/FDIS 7905-4:2021(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2021
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ISO/FDIS 7905-4:2021(E)
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© ISO 2021

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Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols .......................................................................................................................................................................................................................... 1

5 Test specimens........................................................................................................................................................................................................ 2

6 Test methods ............................................................................................................................................................................................................. 2

7 Evaluation and presentation of test results ............................................................................................................................. 4

Annex A (informative) Evaluation of stress ................................................................................................................................................... 5

Bibliography .............................................................................................................................................................................................................................10

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This document was prepared by Technical Committee ISO/TC 123, Plain bearing, Subcommittee SC 2,

Materials and lubricants, their properties, characteristics, test methods and testing conditions.

This second edition cancels and replaces the first edition (ISO 7905-4:1995), which has been editorially

Any feedback or questions on this document should be directed to the user’s national standards body. A

This document specifies a method for the determination of the endurance limit in fatigue of half-

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 4386-3, Plain bearings — Metallic multilayer plain bearings — Part 3: Non-destructive penetrant testing

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

E Young’s modulus of bearing used to construct curves in Figure A.2, E = 50 · 10 MPa