SIST ISO 3320:2014

Fluid power systems and components - Cylinder bores and piston rod diameters and area ratios - Metric series

ISO 3320:2013 establishes a metric series of cylinder bore and piston rod diameters for hydraulic and pneumatic cylinders, and specifies for each pair of diameters a corresponding standard ratio between the useful areas.
It applies only to the dimensional criteria of products manufactured in conformity with ISO 3320:2013; it does not apply to their functional characteristics.

Transmissions et composants hydrauliques et pneumatiques - Alésages des vérins et diamètres des tiges de piston et rapports de surface - Série métrique

L'ISO 3320:2013 établit une série métrique d'alésage de vérin et de diamètres de tige de piston pour vérins hydraulique et pneumatiques, et spécifie pour chaque paire de diamètres un rapport normalisé correspondant entre les zones utiles.
Elle s'applique uniquement aux caractéristiques dimensionnelles des produits fabriqués en conformité avec celle-ci; elle ne s'applique pas à leurs caractéristiques fonctionnelles.

Fluidna tehnika - Premeri valjev in batnic ter razmerja delovnih ploščin - Metrska vrsta

General Information

• Status: Published
• Public Enquiry End Date: 28-Feb-2014
• Publication Date: 13-Feb-2014
• ICS: 23.100.20 - Cylinders
• Technical Committee: IHPV - Hydraulics and pneumatics
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 04-Feb-2014
• Due Date: 11-Apr-2014
• Completion Date: 14-Feb-2014
• Ref Project: ISO 3320:2013 - Fluid power systems and components - Cylinder bores and piston rod diameters and area ratios - Metric series

Relations

• Replaces: SIST ISO 3320:1995 - Fluid power systems and components -- Cylinder bores and piston rod diameters -- Metric series
• Effective Date: 01-Mar-2014
• Replaces: SIST ISO 7181:1997 - Hydraulic fluid power -- Cylinders -- Bore and rod area ratios
• Effective Date: 01-Mar-2014

Overview

ISO 3320:2013 specifies a metric series of cylinder bore (AL) and piston rod (MM) diameters and the corresponding standardized area ratios for hydraulic and pneumatic cylinders. The standard applies only to the dimensional criteria of cylinders and piston rods - it does not set or alter functional performance characteristics. This third edition consolidated and replaced earlier editions (ISO 3320:1987 and ISO 7181:1991).

Key Topics

• Metric diameter series: The standard provides preferred bore diameters (AL) from small to large sizes (examples in table series range up to 500 mm with some non-preferred values in parentheses). Piston rod diameters (MM) are given in a corresponding series (examples include values from small rods up to around 450 mm, with non-preferred entries in parentheses).
• Area ratios: For each bore/rod pair a corresponding ratio between the useful areas is given. Preferred area-ratio values include: 1.06, 1.12, 1.25, 1.33, 1.4, 1.6, 2, 2.5 and 5.
• Dimension tables and notes: Tables list AL and MM values and calculated areas A1 and A2 with effective value φ. Notes explain the use of preferred numbers (ISO 3) and the existence of non-preferred values for special applications.
• Normative references: Key referenced documents are ISO 3 (preferred numbers), ISO 5598 (fluid power vocabulary) and ISO 6099 (identification code for mounting dimensions and types).
• Identification recommendation: Manufacturers conforming to ISO 3320:2013 are recommended to use the identification statement in test reports, catalogues and sales literature.

Applications

ISO 3320:2013 is practical for:

• Design and specification of hydraulic and pneumatic cylinders where dimensional interchangeability matters.
• Component selection and procurement to ensure parts from different suppliers match common dimensional series.
• Catalogues and technical documentation, enabling clear, standard-based listings of bore and rod sizes and area ratios.
• Testing and reporting, where the recommended identification statement supports traceability and conformity claims.

Benefits include simplified inventory management, improved compatibility between components, and reduced design rework when selecting cylinder sizes.

Related Standards

• ISO 3 - Preferred numbers - Series of preferred numbers
• ISO 5598 - Fluid power systems and components - Vocabulary
• ISO 6099 - Cylinders - Identification code for mounting dimensions and types

Manufacturers and designers should note that ISO 3320:2013 addresses dimensional standards only; functional performance and application-specific requirements must be covered by other relevant specifications or testing. Recommended identification wording from the standard: "Cylinder bores, piston rod diameters and ratios selected in accordance with ISO 3320, Fluid power systems and components - Cylinder bores and piston rod diameters and area ratios - Metric series."

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 3320
Third edition
2013-12-01
Fluid power systems and
components — Cylinder bores and
piston rod diameters and area ratios
— Metric series
Transmissions et composants hydrauliques et pneumatiques —
Alésages des vérins et diamètres des tiges de piston et rapports de
surface — Série métrique
Reference number
©
ISO 2013
© ISO 2013
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
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 1
5 Dimensions . 2
6 Area ratios . 3
7 Identification statement (reference to this International Standard) . 3
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 131, Fluid power systems, Subcommittee SC 3,
Cylinders.
This third edition of ISO 3320 cancels and replaces the second edition (ISO 3320:1987) and the second
edition of ISO 7181:1991, which have been combined and technically revised.
iv © ISO 2013 – All rights reserved

Introduction
In fluid power systems, power is transmitted and controlled through a liquid (for hydraulics) or a gas
(for pneumatics) under pressure within an enclosed circuit.
One component of such systems is the fluid power cylinder. This is a device that converts power into
linear mechanical force and motion. It consists of a movable element, i.e. a piston and piston rod,
operating within a cylindrical bore.
INTERNATIONAL STANDARD ISO 3320:2013(E)
Fluid power systems and components — Cylinder bores
and piston rod diameters and area ratios — Metric series
1 Scope
This International Standard establishes a metric series of cylinder bore and piston rod diameters for
hydraulic and pneumatic cylinders, and specifies for each pair of diameters a corresponding standard
ratio between the useful areas.
This International Standard applies only to the dimensional criteria of products manufactured in
conformity with this International Standard; it does not apply to their functional characteristics.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this documen
...

SLOVENSKI STANDARD
01-marec-2014
1DGRPHãþD
SIST ISO 3320:1995
SIST ISO 7181:1997
)OXLGQDWHKQLND3UHPHULYDOMHYLQEDWQLFWHUUD]PHUMDGHORYQLKSORãþLQ0HWUVND
YUVWD
Fluid power systems and components - Cylinder bores and piston rod diameters and
area ratios - Metric series
Transmissions et composants hydrauliques et pneumatiques - Alésages des vérins et
diamètres des tiges de piston et rapports de surface - Série métrique
Ta slovenski standard je istoveten z: ISO 3320:2013
ICS:
23.100.20 +LGUDYOLþQLYDOML Cylinders
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

INTERNATIONAL ISO
STANDARD 3320
Third edition
2013-12-01
Fluid power systems and
components — Cylinder bores and
piston rod diameters and area ratios
— Metric series
Transmissions et composants hydrauliques et pneumatiques —
Alésages des vérins et diamètres des tiges de piston et rapports de
surface — Série métrique
Reference number
©
ISO 2013
© ISO 2013
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
the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Published in Switzerland
ii © ISO 2013 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and units . 1
5 Dimensions . 2
6 Area ratios . 3
7 Identification statement (reference to this International Standard) . 3
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 documents 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).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers
to Trade (TBT) see the following URL: Foreword - Supplementary information
The committee responsible for this document is ISO/TC 131, Fluid power systems, Subcommittee SC 3,
Cylinders.
This third edition of ISO 3320 cancels and replaces the second edition (ISO 3320:1987) and the second
edition of ISO 7181:1991, which have been combined and technically revised.
iv © ISO 2013 – All rights reserved

Introduction
In fluid power systems, power is transmitted and controlled through a liquid (for hydraulics) or a gas
(for pneumatics) under pressure within an enclosed circuit.
One component of such systems is the fluid power cylinder. This is a device that converts power into
linear mechanical force and motion. It consists of a movable element, i.e. a piston and piston rod,
operating within a cylindrical bore.
INTERNATIONAL STANDARD ISO 3320:2013(E)
Fluid power systems and components — Cylinder bores
and piston rod diameters and area ratios — Metric series
1 S
...

NORME ISO
INTERNATIONALE 3320
Troisième édition
2013-12-01
Transmissions et composants
hydrauliques et pneumatiques —
Alésages des vérins et diamètres des
tiges de piston et rapports de surface
— Série métrique
Fluid power systems and components — Cylinder bores and piston
rod diameters and area ratios — Metric series
Numéro de référence
©
ISO 2013
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2013
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite ni utilisée
sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie, l’affichage sur
l’internet ou sur un Intranet, sans autorisation écrite préalable. Les demandes d’autorisation peuvent être adressées à l’ISO à
l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail [e-mail]
Web www.iso.org
Version française parue en 2014
Publié en Suisse
ii © ISO 2013 – Tous droits réservés

Sommaire Page
Avant-propos .iv
Introduction .v
1 Domaine d’application . 1
2 Références normatives . 1
3 Termes et définitions . 1
4 Symboles et unités . 1
5 Dimensions . 2
6 Rapport de surface . 3
7 Phase d’identification (référence à la présente Norme internationale) .3
Avant-propos
L’ISO (Organisation internationale de normalisation) est une fédération mondiale d’organismes
nationaux de normalisation (comités membres de l’ISO). L’élaboration des Normes internationales est
en général confiée aux comités techniques de l’ISO. Chaque comité membre intéressé par une étude
a le droit de faire partie du comité technique créé à cet effet. Les organisations internationales,
gouvernementales et non gouvernementales, en liaison avec l’ISO participent également aux travaux.
L’ISO collabore étroitement avec la Commission électrotechnique internationale (CEI) en ce qui concerne
la normalisation électrotechnique.
Les procédures utilisées pour élaborer le présent document et celles destinées à sa mise à jour sont
décrites dans les Directives ISO/CEI, Partie 1. Il convient, en particulier de prendre note des différents
critères d’approbation requis pour les différents types de documents ISO. Le présent document a été
rédigé conformément aux règles de rédaction données dans les Directives ISO/CEI, Partie 2 (voir www.
iso.org/directives).
L’attention est appelée sur le fait que certains des éléments du présent document peuvent faire l’objet de
droits de propriété intellectuelle ou de droits analogues. L’ISO ne saurait être tenue pour responsable
de ne pas avoir identifié de tels droits de propriété et averti de leur existence. Les détails concernant les
références aux droits de propriété intellectuelle ou autres droits analogues identifiés lors de l’élaboration
du document sont indiqués dans l’Introduction et/ou sur la liste ISO des déclarations de brevets reçues
(voir www.iso.org/patents).
Les éventuelles appellations commerciales utilisées dans le présent document sont données pour
information à l’intention des utilisateurs et ne constituent pas une approbation ou une recommandation.
Pour une explication de la signification des termes et expressions spécifiques de l’ISO liés à l’évaluation
de la conformité, aussi bien que pour des informations au-sujet de l’adhésion de l’ISO aux principes de
l’OMC concernant les obstacles techniques au commerce (OTC) voir le lien URL suivant: Foreword -
Supplementary information
Le comité chargé de l’élaboration du présent document est l’ISO/TC 131, Transmissions hydrauliques et
pneumatiques, sous-comité SC 3, Vérins.
Cette troisième édition de l’ISO 3320 annule et remplace la deuxième édition (ISO 3320:1987) et la
seconde édition de l’ISO 7181:1991, qui ont été combinées et ont fait l’objet d’une révision technique.
iv © ISO 2013 – Tous droits réservés

Introduction
Dans les systèmes de transmissions hydrauliques et pneumatiques l’énergie est transmise et commandée
par l’intermédiaire d’un liquide (hydraulique) ou d’un gaz (pneumatique) sous pression circulant dans
un circuit fermé.
L’un des composants de ces systèmes est le vérin hydraulique. C’est un appareil qui transforme l’énergie
du fluide en énergie mécanique agissant linéairement. Il est constitué d’un élément mobile, c’est-à-dire
un piston et une tige de piston, se déplaçant à l’intérieur d’un alésage cylindrique.
NORME INTERNATIONALE ISO 3320:2013(F)
Transmissions et composants hydrauliques et
pneumatiques — Alésages des vérins et diamètres des
tiges de piston et rapports de surface — Série métrique
1 Domaine d’application
La présente Norme internationale établit une série métrique d’alésage de vérin et de diamètres de tige de
piston pour vérins hydraulique et pneumatiques, et spécifie pour chaque paire de diamètres un rapport
normalisé correspondant entre les zones utiles.
La présente Norme internationale s’applique uniquement aux caractéristiques dimensionnelles des
produits fabriqués en conformité avec la présente Norme internationale; elle ne s’applique pas à leurs
caractéristiques fonctionnelles.
2 Références normatives
Les documents suivants, en tout ou partie, sont r
...