ISO 12921

Petroleum products and lubricants — Determination of the mechanical stability of greases in presence of water

This document specifies a method for the evaluation of the sensitivity of grease to prolonged working in presence of water, with two possible effects: either important softening leading to leakages of grease flow from bearings or important hardening with possible mechanical blockage.

Produits pétroliers et lubrifiants — Détermination de la stabilité mécanique des graisses en présence d’eau

General Information

• Status: Not Published
• ICS: 75.100 - Lubricants, industrial oils and related products
• Technical Committee: ISO/TC 28 - Petroleum and related products, fuels and lubricants from natural or synthetic sources
• Drafting Committee: ISO/TC 28 - Petroleum and related products, fuels and lubricants from natural or synthetic sources
• Current Stage: 6000 - International Standard under publication
• Completion Date: 20-Dec-2023

Standards Content (Sample)

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 12921
ISO/TC 28
Petroleum products and lubricants —
Secretariat: NEN
Determination of the mechanical
Voting begins on:
2023-10-24 stability of greases in presence of
water
Voting terminates on:
2023-12-19
Produits pétroliers et lubrifiants — Détermination de la stabilité
mécanique des graisses en présence d’eau
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 12921:2023(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 2023

---------------------- Page: 1 ----------------------
ISO/FDIS 12921:2023(E)
FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 12921
ISO/TC 28
Petroleum products and lubricants —
Secretariat: NEN
Determination of the mechanical
Voting begins on:
stability of greases in presence of
water
Voting terminates on:
Produits pétroliers et lubrifiants — Détermination de la stabilité
mécanique des graisses en présence d’eau
COPYRIGHT PROTECTED DOCUMENT
© ISO 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 12921:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO 2023

---------------------- Page: 2 ----------------------
ISO/FDIS 12921:2023(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Significance of the test .1
6 Sampling . 2
7 Materials . 2
8 Reagents . 2
9 Operating procedure .
...

ISO/FDIS 12921:2023(E)
Style Definition: Heading 1: Indent: Left: 0 pt, First
line: 0 pt, Tab stops: Not at 21.6 pt
ISO/TC 28
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at 18 pt
Date: 2023-08-18
Style Definition: Heading 3: Font: Bold
SecretariatxxSecretariat: NEN
Style Definition: Heading 4: Font: Bold
Style Definition: Heading 5: Font: Bold
Petroleum products and lubricants — Determination of the mechanical stability of greases in
presence of water Style Definition: Heading 6: Font: Bold
Style Definition: ANNEX
Produits pétroliers et lubrifiants — Détermination de la stabilité mécanique des graisses en présence d’eau
Style Definition: TOC Heading
Style Definition: AMEND Terms Heading: Font: Bold
Style Definition: AMEND Heading 1 Unnumbered:
Font: Bold
Formatted: French (Switzerland)

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ISO/FDIS 12921:2023(E)
© ISO 2023
Formatted: Pattern: Clear
Formatted: Pattern: Clear
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no
part of this publication may be reproduced or utilized otherwise in any form or by any means,
electronic or mechanical, including photocopying, or posting on the internet or an intranet, without
prior written permission. Permission can be requested from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.orgwww.iso.org
Published in Switzerland
ii © ISO 2023 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/FDIS 12921:2023(E)
Contents
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Significance of the test . 2
6 Sampling . 2
7 Materials. 2
8 Reagents . 2
9 Operating procedure . 2
10 Calculation . 3
11 Expression of the result . 3
12 Test report . 3
13 Precision . 3
13.1 General . 3
13.2 Repeatability, r . 4
13.3 Reproducibility, R . 4
Annex A (informative) Existing standards to evaluate the influence of water on grease
properties . 5
Bibliography .
...