ISO 15524

• Abstract:

  This International Standard establishes a metric series of single-rod pneumatic short‑stroke cylinders with bores from 20 mm to 100 mm (inclusive) for use at maximum working pressure of 1 000 kPa [10 bar 1)] with and without magnetic function. They are not equipped with adjustable cushioning, so their application is restricted to those systems where adjustable cushioning is not required.

• Status: Not Published
• ICS: 23.100.50 - Control components
• Technical Committee: ISO/TC 131/SC 3 - Cylinders
• Drafting Committee: ISO/TC 131/SC 3/WG 2 - Pneumatic cylinder mounting dimensions
• Current Stage: 6000 - International Standard under publication
• Start Date: 11-Sep-2026
• Completion Date: 19-Sep-2026

• Revises: ISO 15524:2011 - Pneumatic fluid power — Cylinders — Single-rod short-stroke cylinders, 1 000 kPa (10 bar) series, bores from 20 mm to 100 mm
• Effective Date: 07-Jan-2025

Overview

ISO 15524:2026 specifies the requirements for pneumatic fluid power cylinders-specifically, single-rod short-stroke cylinders that operate at a maximum working pressure of 1,000 kPa (10 bar) and have bore sizes ranging from 20 mm to 100 mm (inclusive). This international standard ensures a consistent metric series, covering both magnetic and non-magnetic function options. The cylinders addressed are not equipped with adjustable cushioning, meaning their application is intended for systems where such a function is not necessary.

By standardizing critical aspects such as bore sizes, strokes, mounting types, and dimensions, ISO 15524 promotes component interchangeability and enhances compatibility within pneumatic systems across various industries.

Key Topics

• Scope and Applicability

  • Covers single-rod, short-stroke pneumatic cylinders
  • Max working pressure: 1,000 kPa (10 bar)
  • Bore sizes: 20 mm to 100 mm, inclusive
  • Suitable for environments where adjustable cushioning is not required

• Design Features

  • Supports both with and without magnetic function configurations
  • Standardized nominal stroke values as per ISO 4393
  • Specific nominal stroke tolerances defined for each bore size
  • External threaded rod end dimensions included as a reference (Annex A)

• Mounting Types

  • MB1: Body, through bolt hole
  • MX8: Head and cap, tapped
  • MX9: Body, through two bolt holes and both ends tapped
  • All mounting options are in accordance with ISO 6099 for orderly installation and system integration

• Terminology and References

  • Definitions are aligned with ISO 5598
  • References key standards for bores, strokes, and port connections (e.g., ISO 3320, ISO 4393, ISO 16030)

Applications

ISO 15524 cylinders are integral to many pneumatic fluid power systems, particularly where compact, reliable actuation is needed without the need for adjustable cushioning. Their applications include:

• Industrial automation: For rapid, short linear motions in assembly lines, pick-and-place systems, and packaging machinery
• Material handling: Used in sorting, conveying, and transfer systems where space constraints are critical
• Robotics: Ideal for grippers and end-effectors requiring consistent stroke and force within defined limits
• Automotive manufacturing: For fixtures, clamping, and positioning in automated production systems
• Process equipment: Used in valves, dampers, and gating mechanisms due to their consistent performance under specified pressure and bore conditions

The standard's metric dimensions and defined mounting options ensure easy replacement, interoperability, and maintenance across global equipment platforms.

Related Standards

ISO 15524 is closely connected to several other ISO pneumatic cylinder and fluid power standards, including:

• ISO 3320: Cylinder bores and piston rod diameters and area ratios - Metric series
• ISO 4393: Basic series of piston strokes for cylinders
• ISO 5598: Vocabulary for fluid power systems and components
• ISO 6099: Identification codes for cylinder mounting dimensions and mounting types
• ISO 16030: Pneumatic fluid power-Connections-Ports and stud ends

Following ISO 15524 in conjunction with these related standards guarantees a high level of system compatibility, component interchangeability, and compliance with international best practices in pneumatic cylinder integration.

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Keywords: ISO 15524, pneumatic cylinder standard, short-stroke cylinder, 1000 kPa, 10 bar, fluid power, single-rod cylinder, metric bore sizes, pneumatic fluid power standards, cylinder mounting types, cylinder dimensions

International
Standard
Second edition
Pneumatic fluid power — Cylinders
— Single-rod short-stroke cylinders,
1 000 kPa (10 bar) series, bores
from 20 mm to 100 mm
Transmissions pneumatiques — Vérins — Vérins course courte à
simple tige, série à 1 000 kPa (10 bar), diamètres de 20 mm à 100
mm
PROOF/ÉPREUVE
Reference number
© ISO 2026
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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
PROOF/ÉPREUVE
ii
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bore sizes . 1
5 Nominal stroke . 2
6 Dimensions . 2
7 Mounting types . 2
8 Example of ordering designation . 4
9 Identification statement (reference to this document) . 4
Annex A (informative) External threaded rod end . 5
PROOF/ÉPREUVE
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 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).
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 3,
Cylinders.
This second edition cancels and replaces the first edition (ISO 15524:2011), which has been technically
revised.
The main changes are as follows:
— Addition of Annex A to reflect the state of the art: in the current market, many cylinders of an external
threaded rod end are available other than cylinders of an internal threaded rod end. Also, their standards
are standardized in some countries. Therefore, the dimensions of an external threaded rod end were
added to Annex A as reference.
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.
PROOF/ÉPREUVE
iv
Introduction
In pneumatic fluid power systems, power is transmitted and controlled through a gas under pressure within
a circuit.
One component of such systems is the pneumatic fluid power cylinder. This is a device that convert
...

ISO/PRF 15524:2026(en)
ISO/TC 131/SC 3
Secretariat: JISC DIN
Date: 2026-07-27xx
Pneumatic fluid power — Cylinders — Single-rod short-stroke
cylinders, 1 000 kPa (10 bar) series, bores from 20 mm to 100 mm
Transmissions pneumatiques — Vérins — Vérins course courte à simple tige, série à 1 000 kPa (10 bar),
diamètres de 20 mm à 100 mm
PROOF
ISO/PRF 15524:2026(en)
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 8CH-1214 Vernier, Geneva
CH-1214 Vernier, Geneva
Phone: + 41 22 749 01 11
EmailE-mail: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
ISO/PRF 15524:2026(en)
Contents Page
Foreword . iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Bore sizes . 1
5 Nominal stroke . 1
6 Dimensions . 2
7 Mounting types . 2
8 Example of ordering designation . 5
9 Identification statement (reference to this document) . 5
Annex A (informative) External threaded rod end . 6

iii
ISO/PRF 15524:2026(en)
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).
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 3,
Cylinders.
This second edition cancels and replaces the first edition (ISO 15524:2011), which has been technically
revised.
The main changes are as follows:
— — Addition of Annex AAnnex A to reflect the state of the art: in the current market, many cylinders of an
external threaded rod end are available other than cylinders of an internal threaded rod end. Also, their
standards are standardized in some countries. Therefore, the dimensions of an external threaded rod end
were added to Annex AAnnex A as reference.
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.
iv
ISO/PRF 15524:2026(en)
Introduction
In pneumatic fluid power systems, power is transmitted and controlled through a gas under pressure within
a circuit.
One component of such systems is the pneumatic 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.
v
ISO/PRF 15524:2026(en)
Pneumatic fluid power — Cylinders — Single-rod short-stroke
cylinders, 1 000 kPa (10 bar) series, bores from 20 mm to 100 mm
1 Scope
This document establishes a metric series of single-rod pneumatic short--stroke cylinders with bores from
1 1)
20 mm to 100 mm (inclusive) for use at a maximum working pressure of 1 000 kPa [10 bar ] ] with and
without magnetic function. They are not equipped with adjustable cushioning, so their application is restricted
to those systems where adjustable cushioning is
...