NF EN ISO 20623

NF EN ISO 20623

August 2004
Standard Cancelled

Petroleum and related products - Determination of the extreme pressure and anti-wear properties of fluids - Four ball method (european conditions)

ISO 20623:2003 specifies procedures for the measurement of the extreme-pressure (EP) and anti-wear properties of lubricating oils and fluids by means of the four ball machine. The conditions of test are those that apply in Europe and other areas that have similar electrical supply characteristics (200 V to 250 V, 50 Hz). In North America, the conditions of test are slightly different, but provide a similar ranking of the lubricating properties of fluids. The test conditions are not intended to simulate particular service conditions, but to provide information over a range of standard conditions for the purpose of research, development, quality control and fluid ranking. The output is used in lubricant specifications.

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Main informations

Collections

National standards and national normative documents

Publication date

August 2004

Number of pages

24 p.

Reference

NF EN ISO 20623

ICS Codes

75.100   Lubricants, industrial oils and related products

Classification index

T60-620

Print number

1 - 23/09/2004

International kinship

ISO 20623:2003

European kinship

EN ISO 20623:2003
Sumary
Petroleum and related products - Determination of the extreme pressure and anti-wear properties of fluids - Four ball method (european conditions)

ISO 20623:2003 specifies procedures for the measurement of the extreme-pressure (EP) and anti-wear properties of lubricating oils and fluids by means of the four ball machine. The conditions of test are those that apply in Europe and other areas that have similar electrical supply characteristics (200 V to 250 V, 50 Hz). In North America, the conditions of test are slightly different, but provide a similar ranking of the lubricating properties of fluids. The test conditions are not intended to simulate particular service conditions, but to provide information over a range of standard conditions for the purpose of research, development, quality control and fluid ranking. The output is used in lubricant specifications.

Standard replaced by (1)
NF EN ISO 20623
January 2018
Standard Current
Petroleum and related products - Determination of the extreme-pressure and anti-wear properties of lubricants - Four-ball method (European conditions)

<p>ISO 20623:2017 specifies procedures for the measurement of the extreme pressure (EP) and anti-wear properties of liquid lubricants (categories C, D, F, G, H, M, P of ISO 6743‑99), lubricating greases (ISO 6743‑9, category X) and other consistent lubricants. The test conditions are not intended to simulate particular service conditions, but to provide information over a range of standard conditions for the purpose of research, development, quality control and fluid ranking. The output is used in lubricant specifications.</p>

Table of contents
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  • Avant-propos
    iv
  • 1 Domaine d'application
    1
  • 2 Références normatives
    1
  • 3 Termes et définitions
    1
  • 4 Principe
    2
  • 5 Produits et réactifs
    3
  • 5.1 Solvants de nettoyage
    3
  • 6 Appareillage
    3
  • 6.1 Machine à quatre billes pour essai de lubrifiants extrême pression
    3
  • 6.2 Dispositif d'enregistrement de frottement (facultatif)
    5
  • 6.3 Disques
    5
  • 6.4 Microscope
    5
  • 6.5 Chronomètre
    6
  • 6.6 Billes d'essai
    6
  • 6.7 Plaque de montage
    6
  • 7 Échantillons et échantillonnage
    6
  • 8 Préparation de l'appareillage
    6
  • 9 Mode opératoire général
    6
  • 10 Modes opératoires
    7
  • 10.1 Charge moyenne de Hertz (CMH)
    7
  • 10.2 Courbe usure-charge, charge de soudure, point critique et charge initiale de grippage
    8
  • 10.3 Essai d'usure
    8
  • 11 Calculs
    8
  • 11.1 Généralités
    8
  • 11.2 Charge moyenne de Hertz
    9
  • 11.3 Courbe d'usure, point critique et charge initiale de grippage
    9
  • 12 Expression des résultats
    11
  • 13 Fidélité
    11
  • 13.1 Généralités
    11
  • 13.2 Répétabilité
    11
  • 13.3 Reproductibilité
    11
  • 14 Rapport d'essai
    12
  • Annexe A (normative) Fiche de travail pour le calcul de la charge moyenne de Hertz
    13
  • Annexe B (normative) Dispositif d'enregistrement de frottement - Étalonnage des ressorts
    15
  • Bibliographie
    18
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