ISO/FDIS 18582-3

• Abstract:

  This document specifies a reference dictionary of standardized product properties for the area of hydraulic fluid power on the basis of ISO 18582-1. The properties are determined on the basis of standardized attributes. The properties are determined on the basis of standardized attributes.

• Status: Not Published
• ICS: 23.100.01 - Fluid power systems in general
• Technical Committee: ISO/TC 131/SC 1 - Symbols, terminology and classifications
• Drafting Committee: ISO/TC 131/SC 1 - Symbols, terminology and classifications
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 30-Sep-2026
• Completion Date: 30-Sep-2026

ISO/FDIS 18582-3 is an ISO standard for hydraulic fluid power reference dictionaries. It specifies standardized product properties, classes and value lists for hydraulics on the basis of ISO 18582-1, so hydraulic data can be exchanged with the same meaning across systems and organizations. It is intended for people working with hydraulic fluid power data in catalogues, machine-to-machine communication, commissioning and troubleshooting.

What does ISO/FDIS 18582-3 specify?

ISO/FDIS 18582-3 specifies a reference dictionary of standardized product properties for hydraulic fluid power. It organizes those properties through standardized attributes, so users can describe hydraulic products in a consistent way rather than with free text.

The document is organized into clauses 1 to 5, covering scope, normative references, terms and definitions, general principles, and access to the tables, followed by a bibliography. Its working content is maintained as tables in an Excel file.

What are the key requirements of ISO/FDIS 18582-3?

ISO/FDIS 18582-3 sets out a controlled class-and-property structure for hydraulics.

Hydraulic classes

Clause 4.1 states that all classes belong to definition class 23, “fluid systems and components for general use”. The classes are arranged in four hierarchical levels and are meant to provide a comprehensive mapping of hydraulics. In practice, this gives manufacturers and data stewards a shared class structure for naming and grouping hydraulic products.

Clause 4.1 also reduces the representation of each class to four attributes: identifier, preferred name, definition, and synonymous name. That matters because it limits the core class record to the fields needed for unambiguous electronic exchange.

Properties and value lists

Clause 4.2 says the properties use a largely complete set of attributes according to ISO 18582-1. In practice, this means property records are structured and standardized rather than ad hoc.

Clause 4.3 assigns fixed values to some properties through named lists of values. Most lists share the property name, but some use a different name when several lists apply. This is important when software or catalogues must pick values from a controlled list instead of entering a free value.

Assignment to application classes

Clause 4.4 assigns properties to application classes, which are the fourth hierarchical level in the list of hydraulic classes. A subset of those allocated properties may be used. For users, this means the standard supports class-specific data sets without forcing every class to use every property.

Clause 4.4 also links the structure to the Asset Administration Shell (AAS) defined in IEC 63278-1. The document states that standardized AAS use standardized properties with standardized identifiers and standardized semantics. In practice, this supports machine-to-machine communication because the same property means the same thing at both ends.

How to use the tables

Clause 5 states that the four tables from the general principles are provided as sheets in an Excel file in the ISO standards maintenance portal. The tables are also accessible through the ISO standards link given in the document. This is the working reference for implementation, cataloguing, and software mapping.

What terms does ISO/FDIS 18582-3 define?

The document relies on terms and definitions from ISO 5598, ISO 13584-42, and ISO/IEC Guide 77-2. The following terms are the most important for reading and using it:

• Hydraulic classes - the hierarchical class structure used to organize hydraulics within the reference dictionary.
• Properties - standardized product characteristics described with a structured set of attributes.
• Lists of values - controlled sets of allowed values attached to selected properties.
• Application classes - the fourth-level classes that receive assigned properties.
• Standardized attributes - the fixed fields used to describe each class or property record.
• Asset Administration Shell (AAS) - a standardized data model for machine-to-machine communication that uses property lists.
• Definition class 23 - the class family for fluid systems and components for general use.

Who uses ISO/FDIS 18582-3?

ISO/FDIS 18582-3 is used by engineers, product data managers, catalog authors, system integrators, and software developers working with hydraulic fluid power systems. It is also relevant to buyers and quality managers who need consistent product data for procurement, documentation, and traceability.

The introduction highlights catalogue preparation, machine-to-machine communication, commissioning, and troubleshooting. Those are the main tasks that benefit from a shared hydraulic dictionary.

Which standards are used with ISO/FDIS 18582-3?

ISO/FDIS 18582-3 depends on these named standards:

• ISO/IEC Guide 77-2 - provides technical principles and guidance for specifying product properties and classes.
• ISO 5598 - provides the fluid power vocabulary used for terms and definitions.
• ISO 13584-42 - provides methodology for structuring parts families.
• ISO 18582-1 - provides the general overview on organization and structure for the ISO 18582 reference dictionary series.
• IEC 63278-1 - is cited in relation to the Asset Administration Shell (AAS) structure used for standardized machine-to-machine data exchange.

What does the ISO/FDIS 18582-3 document contain?

ISO/FDIS 18582-3 contains a short framework plus the maintained tables that carry the technical content. Clause 4 gives the class structure, property approach, value lists, and the assignment of properties to classes. Clause 5 explains that these tables are stored as four sheets in an Excel file and made accessible through ISO’s online repository.

The document also includes Figure 1, which illustrates data transmission using two standardized properties of a hydraulic cylinder. The bibliography names IEC 63278-1 for the AAS concept.

FINAL DRAFT
International
Standard
ISO/TC 131/SC 1
Fluid power — Specification of
Secretariat: DIN
reference dictionary —
Voting begins on:
2026-09-30
Part 3:
Definitions of classes and
Voting terminates on:
2026-11-25
properties of hydraulics
Transmissions hydrauliques et pneumatiques — Spécification
d'un dictionnaire de référence —
Partie 3: Définitions des classes et propriétés relatives aux
transmissions hydrauliques
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
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
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.
Reference number
FINAL DRAFT
International
Standard
ISO/TC 131/SC 1
Fluid power — Specification of
Secretariat: DIN
reference dictionary —
Voting begins on:
Part 3:
Definitions of classes and
Voting terminates on:
properties of hydraulics
Transmissions hydrauliques et pneumatiques — Spécification
d'un dictionnaire de référence —
Partie 3: Définitions des classes et propriétés relatives aux
transmissions hydrauliques
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.
© ISO 2026
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 1
4.1 Hydraulic classes .1
4.2 Properties .2
4.3 Lists of values .2
4.4 Assignment properties to classes .2
5 Access to the tables . 3
Bibliography . 4

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out through
ISO 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. ISO collaborates closely
with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are described
in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the different types
of ISO document should be noted. This document was drafted in accordance with the editorial rules of the
ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to impl
...

ISO/TC 131/SC 1
Secretariat: DIN
Date: 2026-08-17xx
Fluid power — Specification of reference dictionary — —
Part 3:
Definitions of classes and properties of hydraulics
Transmissions hydrauliques et pneumatiques — Spécification d'un dictionnaire de référence — —
Partie 3: Définitions des classes et propriétés relatives aux transmissions hydrauliques

FDIS stage
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: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
Contents
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General principles . 1
4.1 Hydraulic classes . 1
4.2 Properties . 2
4.3 Lists of values . 2
4.4 Assignment properties to classes . 2
5 Access to the tables . 3
Bibliography . 4

iii
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO 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. ISO
collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO document should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
ISO draws attention to the possibility that the implementation of this document may involve the use of
(a) patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed
patent rights in respect thereof. As of the date of publication of this document, ISO had not received notice
of (a) patent(s) which may be required to implement this document. However, implementers are
cautioned that this may not represent the latest information, which may be obtained from the patent
database available at www.iso.org/patents. ISO shall not be held responsible for identifying any or all
such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 131, Fluid power systems, Subcommittee
SC 1, Symbols, terminology and classifications.
A list of all parts in the ISO 18582 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

Introduction
This document provi
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