Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-4:2015)

ISO 6743-4:2015 establishes the detailed classification of fluids of Family H (Hydraulic systems) which belong to class L (Lubricants, industrial oils, and related products). It is intended to be read in conjunction with ISO 6743‑99. This classification system does not include automotive brake fluids or aircraft hydraulic fluids.

Schmierstoffe, Industrieöle und verwandte Erzeugnisse (Klasse L) - Klassifizierung - Teil 4: Familie H (Hydraulische Systeme) (ISO 6743-4:2015)

Lubrifiants, huiles industrielles et produits connexes (classe L) - Classification - Partie 4: Famille H (Systèmes hydrauliques) (ISO 6743-4:2015)

L'ISO 6743-4:2015 établit la classification détaillée de la famille H (Systèmes hydrauliques) qui appartient à la classe L (Lubrifiants, huiles industrielles et produits connexes). Elle est destinée à être lue conjointement avec l'ISO 6743‑99. La présente classification ne s'applique pas aux liquides de freins pour automobiles ni aux fluides pour systèmes hydrauliques utilisés en aéronautique.

Maziva, industrijska olja in sorodni proizvodi (skupina L) - Klasifikacija - 4. del: Podskupina H (hidravlični sistemi) (ISO 6743-4:2015)

Ta del standarda ISO 6743 podrobneje razvršča tekočine podskupine H (hidravlični sistemi) skupine L (maziva, industrijska olja in sorodni proizvodi). Standard je treba brati v povezavi s standardom ISO 6743-99. Ta sistem razvrstitve ne zajema avtomobilskih zavornih tekočin ali letalskih hidravličnih tekočin.

General Information

Status
Published
Public Enquiry End Date
05-Jan-2014
Publication Date
06-Sep-2015
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
24-Aug-2015
Due Date
29-Oct-2015
Completion Date
07-Sep-2015

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Overview

SIST EN ISO 6743-4:2015 is an international standard published by the Slovenian Institute for Standardization (SIST), in alignment with ISO 6743-4:2015. It focuses on the classification of lubricants, industrial oils, and related products within class L, specifically targeting hydraulic systems (Family H). The document provides a unified system for categorizing various hydraulic fluids based on their composition and intended application. This standard plays a vital role in ensuring consistency and compatibility across industries using hydraulic systems, supporting quality and performance in industrial lubrication.

Key Topics

  • Classification Framework: Establishes detailed categories of hydraulic fluids used in industrial applications, each denoted by a specific code (e.g., HH, HL, HM, HV, HG, HFAE, HFB, HFC, HFDU, etc.).
  • Designation Codes: Each product is classified using a standardized code that identifies its family, subgroup, and viscosity grade as per ISO 3448.
  • Fluid Types: Includes mineral oils, synthetic fluids, water-based fluids, fire-resistant fluids, and environmentally acceptable hydraulic fluids.
  • Intended Use: Covers fluids for use in a variety of hydraulic systems across construction, manufacturing, marine, and other sectors.
  • Exclusions: Specifically does not cover automotive brake fluids or aircraft hydraulic fluids.
  • Reference Documents: Requires use alongside ISO 6743-99 and refers to additional technical specifications for certain fluid types.

Applications

The classification system outlined in SIST EN ISO 6743-4:2015 is widely used across different industries to:

  • Select Appropriate Hydraulic Fluids: Assisting engineers, manufacturers, and maintenance professionals in choosing fluids suitable for specific hydraulic operations based on performance requirements and operating conditions.
  • Ensure Equipment Compatibility: The standard codes help ensure that the hydraulic systems operate efficiently and avoid compatibility issues that could lead to performance degradation or equipment failure.
  • Support Safety Compliance: Incorporates identification of fire-resistant and environmentally acceptable hydraulic fluids, aiding companies striving to meet safety and environmental regulations.
  • Facilitate International Trade: Offers a common classification recognized globally, streamlining procurement and supply chain processes for hydraulic fluids and lubricants.
  • Enhance Maintenance Practices: Provides maintenance teams with clear guidelines for selecting replacement fluids and managing fluid inventories.

Typical applications include:

  • Hydraulic systems in industrial machinery and manufacturing equipment
  • Construction vehicles and equipment
  • Marine hydraulic systems
  • Any other non-automotive, non-aerospace hydraulic applications requiring reliable and standardized fluid classification

Related Standards

Professionals working with SIST EN ISO 6743-4:2015 may reference these related documents to ensure full compliance and optimal system performance:

  • ISO 6743-99: General classification for lubricants, industrial oils, and related products (provides the overarching framework).
  • ISO 11158: Specifications for categories HH, HL, HM, HV, and HG (details specific performance requirements for commonly used hydraulic fluids).
  • ISO 12922: Specifications regarding fire-resistant hydraulic fluids.
  • ISO 15380: Specifications for environmentally acceptable hydraulic fluids.
  • ISO 3448: Viscosity classification for industrial liquid lubricants.

By following SIST EN ISO 6743-4:2015, industries benefit from a clear structure for classifying, selecting, and managing hydraulic fluids, leading to improved reliability, safety, and environmental stewardship in hydraulic system operations. This standard is integral for those seeking assurance and consistency in hydraulic fluid specification and usage.

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Frequently Asked Questions

SIST EN ISO 6743-4:2015 is a standard published by the Slovenian Institute for Standardization (SIST). Its full title is "Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-4:2015)". This standard covers: ISO 6743-4:2015 establishes the detailed classification of fluids of Family H (Hydraulic systems) which belong to class L (Lubricants, industrial oils, and related products). It is intended to be read in conjunction with ISO 6743‑99. This classification system does not include automotive brake fluids or aircraft hydraulic fluids.

ISO 6743-4:2015 establishes the detailed classification of fluids of Family H (Hydraulic systems) which belong to class L (Lubricants, industrial oils, and related products). It is intended to be read in conjunction with ISO 6743‑99. This classification system does not include automotive brake fluids or aircraft hydraulic fluids.

SIST EN ISO 6743-4:2015 is classified under the following ICS (International Classification for Standards) categories: 75.100 - Lubricants, industrial oils and related products. The ICS classification helps identify the subject area and facilitates finding related standards.

SIST EN ISO 6743-4:2015 has the following relationships with other standards: It is inter standard links to SIST EN ISO 6743-4:2002, SIST ISO 15380:2011, SIST EN 13119:2016, SIST EN 12101-6:2005, SIST EN 856:2015+AC:2019, SIST EN 1175:2020, SIST EN 1175:2026, SIST EN 81-30:2026, SIST EN 1501-5:2021, SIST EN 853:2015, SIST EN 854:2015, SIST EN 81-42:2026, SIST EN 857:2015, SIST EN 81-31:2025, SIST EN ISO 20137:2017. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.

SIST EN ISO 6743-4:2015 is associated with the following European legislation: EU Directives/Regulations: 92/104/EC; Standardization Mandates: M/238. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.

SIST EN ISO 6743-4:2015 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-oktober-2015
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SIST EN ISO 6743-4:2002
0D]LYDLQGXVWULMVNDROMDLQVRURGQLSURL]YRGL VNXSLQD/ .ODVLILNDFLMDGHO
3RGVNXSLQD+ KLGUDYOLþQLVLVWHPL  ,62
Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H
(Hydraulic systems) (ISO 6743-4:2015)
Schmierstoffe, Industrieöle und verwandte Erzeugnisse (Klasse L) - Klassifizierung - Teil
4: Familie H (Hydraulische Systeme) (ISO 6743-4:2015)
Lubrifiants, huiles industrielles et produits connexes (classe L) - Classification - Partie 4:
Famille H (Systèmes hydrauliques) (ISO 6743-4:2015)
Ta slovenski standard je istoveten z: EN ISO 6743-4:2015
ICS:
75.100 Maziva Lubricants, industrial oils and
related products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 6743-4
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2015
ICS 75.120 Supersedes EN ISO 6743-4:2001
English Version
Lubricants, industrial oils and related products (class L) -
Classification - Part 4: Family H (Hydraulic systems) (ISO 6743-
4:2015)
Lubrifiants, huiles industrielles et produits connexes (classe Schmierstoffe, Industrieöle und verwandte Erzeugnisse
L) - Classification - Partie 4: Famille H (Systèmes (Klasse L) - Klassifizierung - Teil 4: Familie H (Hydraulische
hydrauliques) (ISO 6743-4:2015) Systeme) (ISO 6743-4:2015)
This European Standard was approved by CEN on 16 April 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 6743-4:2015 E
worldwide for CEN national Members.

Contents Page
European foreword .3
European foreword
This document (EN ISO 6743-4:2015) has been prepared by Technical Committee ISO/TC 28 "Petroleum
products and lubricants" in collaboration Technical Committee CEN/TC 19 “Gaseous and liquid fuels,
lubricants and related products of petroleum, synthetic and biological origin” the secretariat of which is held by
NEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by February 2016, and conflicting national standards shall be withdrawn
at the latest by February 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 6743-4:2001.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive(s).
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Endorsement notice
The text of ISO 6743-4:2015 has been approved by CEN as EN ISO 6743-4:2015 without any modification.
INTERNATIONAL ISO
STANDARD 6743-4
Third edition
2015-08-01
Lubricants, industrial oils and related
products (class L) — Classification —
Part 4:
Family H (Hydraulic systems)
Lubrifiants, huiles industrielles et produits connexes (classe L) —
Classification —
Partie 4: Famille H (Systèmes hydrauliques)
Reference number
ISO 6743-4:2015(E)
©
ISO 2015
ISO 6743-4:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, 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
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ii © ISO 2015 – All rights reserved

ISO 6743-4:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Explanation of symbols used . 1
4 Detailed classification . 2
Bibliography . 4
ISO 6743-4:2015(E)
Foreword
ISO (the International O
...