ISO 11158:1997

INTERNATIONAL IS0
11158
STANDARD
First edition
1997-1 2-1 5
Lubricants, industrial oils and related
products (class L) - Family H (hydraulic
systems) - Specifications for categories
HH, HL, HM, HR, HV and HG
Lubrifiants, huiles industrielles et produits connexes (classe 1) - Famille H
(systèmes hydrauliques) - Spécifications des catégories HH, HL, HM, HR,
HV et HG
Reference number
IS0 11 158:1997(E)

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IS0 1 1 1 58: 1 997( E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented
on that committee. International organizations, governmental and non-
governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 YO of the member bodies casting
a vote.
International Standard IS0 11 158 was prepared by Technical Committee
lSO/TC 28, Petroleum products and lubricants, Subcommittee SC 4,
Classifications and specifications.
Annexes A and B of this International Standard are for information only.
O IS0 1997
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced
or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm, without permission in writing from the publisher.
International Organization for Standardization
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Printed in Switzerland
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INTERNATIONAL STANDARD 0 IS0 IS0 1 1 1 58: 1997( E)
Lubricants, industrial oils and related products (class L) -
Family H (hydraulic systems) - Specifications for categories
HH, HL, HM, HR, HV and HG
WARNING - The handling and use of products as specified in this International Standard
may be hazardous, if suitable precautions are not observed. This International Standard
does not purport to address all of the safety problems associated with its use. It is the
responsibility of the user of this standard to establish appropriate safety and health
practices and determine the applicability of regulatory limitations prior to use.
1 Scope
This International Standard specifies the requirements of mineral oil hydraulic fluids and is
intended for hydraulic systems, particularly for hydrostatic hydraulic fluid power application. The
purpose of this International Standard is for the guidance of suppliers and end users of mineral oil
hydraulic fluids and for the direction of equipment manufacturers of hydraulic systems.
This International Standard is written in a general form so that its application can accommodate
various climatic conditions throughout the world. This International Standard also stipulates the
requirements of mineral oil hydraulic fluids at the time of delivery.
Classification of fluids used in hydraulic applications is defined in IS0 6743-4. Of the categories
IS0 6743-4, six types only of mineral oil based fluids are embraced in this
covered by
specification. These categories are: HH, HL, HM, HR, HV and HG.
NOTE - Although specifications given in this International Standard refer only to mineral oil based hydraulic
fluids, this specification can be applicable to certain types of hydrocarbon synthetic fluids e.g. polyalphaolefin
(type HS).
2 Normative References
The following standards contain provisions which, through reference in this text, constitute
At the time of publication, the editions indicated were
provisions of this International Standard.
valid. All standards are subject to revision, and parties to agreements based on this International
Standard are encouraged to investigate the possibility of applying the most recent editions of the
standards indicated below. Members of IEC and IS0 maintain registers of currently valid
International Standards.
IS0 2049:1996, Petroleum products - Determination of colour.
IS0 21 60:-’), Petroleum products - Corrosiveness to copper - Copper strip test.
IS0 2592:2), Petroleum products - Determination of flash and fire points - Cleveland open cup
method.
1) To be published. (Revision of IS0 2160:1985)
2) To be published. (Revision of IS0 2592:1973)
1

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IS0 1 1 158: 1997( E)
IS0 271 9:l 988, Petroleum products and lubricants - Determination of flash point - Pensky-
Martens closed cup method.
IS0 2909:1981, Petroleum products - Calculation of viscosity index from kinematic viscosity.
IS0 301 6:1994, Petroleum products - Determination of pour point.
IS0 31 04:1994, Petroleum products - Transparent and opaque liquids - Determination of
kinematic viscosity and calculation of dynamic viscosity.
IS0 31 05:1994, Glass capillary kinematic viscometers - Specifications and operating instructions.
IS0 31 70:1988, Petroleum liquids - Manual sampling.
IS0 3448: 1 992, lndustrial liquid lubricants - IS0 viscosity classification.
IS0 3675:-3), Crude petroleum and liquid petroleum products - Laboratory determination of
density - Hydrometer method.
IS0 4259: 1 992, Petroleum products - Determination and application of precision data in relation
to methods of test.
IS0 4406:-4), Hydraulic fluid power - Fluids - Code for defining the level of contamination by
solid particles.
IS0 5598:1985, Fluid power systems and components - Vocabulary.
IS0 6072: 1 986, Hydraulic fluid power - Compatibility between elastomeric materials and fluids.
IS0 6247:-5), Petroleum products - Determination of foaming characteristics of lubricating oils.
IS0 661 4:1994, Petroleum products - Determination of water separability of petroleum oils and
synthetic fluids.
IS0 661 8:1997, Petroleum products and lubricants - Determination of acid or base number -
Colour-indicator titration method.
IS0 6743-4:1982, Lubricants, industrial oils and related products (Class L) - Classification -
Part 4: Family H (hydraulic systems).
IS0 71 20:1987, Petroleum products and lubricants - Petroleum oils and other fluids -
Determination of rust-preventing characteristics in the presence of water.
IS0 91 20:1997, Petroleum products - Determination of air-release properties of petroleum steam
turbine and other oils - lmpinger method.
BS 2000:Part 281 :1993, Determination of anti-wear properties of hydraulic fluids. Vane pump method.
DIN 51 354-2:1990, Testing of lubricants - FZG gear test rig - Method A/8,3/90 for lubricating oils.
DIN 51 777-1 :1983, Testing of mineral oil hydrocarbons and solvents - Determination of water content
according to Karl Fischer - Direct method.
3) To be published. (Revision of IS0 36751993)
4) To be published. (Revision of IS0 4406:1987)
5) To be published.
2

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0 IS0 IS0 11158:1997(E)
DIN 51777-2:1974, Testing of mineral oil hydrocarbons and solvents - Determination of water
content according to Karl Fischer - Indirect method.
ASTM D 1744-92, Determination of Water in Liquid Petroleum Products by Karl Fische
...