ISO 24410:2020

Earth-moving machinery - Coupling of attachments to skid steer loaders

This document provides for the interchangeability of attachments on skid steer loaders by establishing requirements for the quick coupler system including dimensional limits for the attachment mounting frame. These quick couplers are typically used on skid steer loaders as defined in ISO 6165. NOTE 1 Skid steer loaders can use other styles of quick couplers but the coupler would not be interchangeable with attachments designed to comply with this document. NOTE 2 The requirements of this document can be applied to quick couplers used on other compact machines. NOTE 3 Quick couplers used on small skid steer loaders and some compact tool carriers can have a different width requirement than provided in this document. See Annex B.

Engins de terrassement — Attelage des accessoires des chargeuses à direction articulée

General Information

• Status: Published
• Publication Date: 18-Aug-2020
• ICS: 53.100 - Earth-moving machinery
• Technical Committee: ISO/TC 127/SC 2 - Safety, ergonomics and general requirements
• Drafting Committee: ISO/TC 127/SC 2 - Safety, ergonomics and general requirements
• Current Stage: 9093 - International Standard confirmed
• Start Date: 03-Dec-2025
• Completion Date: 13-Dec-2025

Relations

• Revises: ISO 24410:2005 - Earth-moving machinery - Coupling of attachments to skid steer loaders
• Effective Date: 04-Nov-2015

Overview

ISO 24410:2020 - "Earth-moving machinery - Coupling of attachments to skid steer loaders" - defines requirements to ensure the interchangeability of attachments on skid steer loaders through a standardized quick coupler system. The standard establishes dimensional limits for the attachment mounting frame, guidance for the quick coupler engagement system, and added safety requirements. It applies primarily to skid steer loaders (see ISO 6165) but can be used for other compact machines and includes provisions for narrow-width couplers (Annex B).

Key topics and technical requirements

• Scope and purpose
  • Ensures attachments designed to the standard are interchangeable across compliant skid steer loaders.
  • Focuses on the interface between the quick coupler and the attachment mounting frame.
• General design requirements
  • Interface geometry must create defined contact zones between coupler and mounting frame; a controlled gap is permitted.
  • Quick coupler must not protrude beyond specified reference surfaces when mounted.
  • Linkage should permit a minimum rollback beyond vertical (noted exceptions for smaller machines).
• Safety and engagement
  • Requires compliance with wedge-type engagement principles as specified in ISO 13031:2016.
  • Locking systems must prevent wedge/pin retraction under working forces that pull the attachment away from the machine.
• Dimensional guidance
  • Attachment mounting frame dimensions are provided (figures and dimensions in millimetres) and must be respected; some attachments may include centre support structures within defined zones.
  • Annex B provides alternative width dimensions for narrow skid steer loader couplers.
• Informative guidance
  • Annex A explains mechanics of working forces on wedge-type skid steer quick couplers and how forces can either tighten or attempt to pull the attachment free.

Applications and who uses this standard

ISO 24410:2020 is valuable to:

• Manufacturers and OEMs designing skid steer loaders, quick couplers, and attachments to ensure cross-compatibility.
• Attachment designers who need to meet the specified mounting-frame dimensions and interface zones.
• Safety engineers and certification bodies assessing coupler locking and wedge engagement performance.
• Fleet operators and rental companies who seek interoperable attachments across machines to reduce inventory and downtime.
• Regulatory and standards professionals coordinating machine and attachment conformity.

Practical benefits include improved attachment interchangeability, reduced risk of accidental disengagement, and clearer design guidance for compact earth-moving equipment.

Related standards

• ISO 6165 - Identification and terms for skid steer loaders and basic types
• ISO 13031:2016 - Quick couplers - Safety (wedge-type engagement requirements)
• Referenced/related documents: ISO 6746-2, ISO 7131 (terminology and related dimensions)

Keywords: ISO 24410:2020, skid steer loaders, quick coupler system, attachment mounting frame dimensions, earth‑moving machinery, interchangeability, wedge‑type engagement, ISO 13031, ISO 6165.

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 24410
Second edition
2020-08
Earth-moving machinery — Coupling
of attachments to skid steer loaders
Engins de terrassement — Attelage des accessoires des chargeuses à
direction articulée
Reference number
©
ISO 2020
© ISO 2020
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
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CH-1214 Vernier, Geneva
Phone: [phone]
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Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 General requirements . 2
5 Safety requirements . 3
6 Attachment mounting frame dimensions . 4
Annex A (informative) Mechanics of a skid steer loader quick coupler . 8
Annex B (informative) Width dimensions for narrow skid steer loader coupler .10
Bibliography .11
Foreword
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bodies (ISO member bodies). The work of preparing International Standards is normally carried out
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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
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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
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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 127, Earth-moving machinery,
Subcommittee SC 2, Safety, ergonomics and general requirements.
This second edition cancels and replaces the first edition (ISO 24410:2005), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— addition of safety requirements;
— addition of informative annex regarding the mechanics of a skid steer loader quick coupler;
— addition of width dimensions for narrow skid steer loader attachment mounting frame.
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 2020 – All rights reserved

Introduction
Quick couplers typical to skid steer loaders are now used on other types of compact products, e.g.
compact loaders, compact tractors, compact rough-terrain forklift trucks. The growth of the use of this
style quick coupler with other products has resulted in the need to provide guidance regarding the
design principles of this quick coupler system.
The previous edition of this document only provided the dimensional requirements for the mounting
frame on the attachment. Dimensions for the quick coupler itself were not provided as these dimensions
are dependent on the design of the quick coupler. This edition also does not provide dimensional
requirements for the quick coupler itself; however, it does provide guidance for the quick coupler
engagement system.
INTERNATIONAL STANDARD ISO 24410:2020(E)
Earth-moving machinery — Coupling of attachments to
skid steer loaders
1 Scope
This document provides for the interchangeability of attachments on skid steer loaders by establishing
requirements for the quick coupler system including dimensional limits for the attachment mounting
frame. These quick couplers are typically used on skid steer loaders as defined in ISO 6165.
NOTE 1 Skid steer loaders can use other styles of quick couplers but the coupler would not be interchangeable
with attachments designed to comply with this document.
NOTE 2 The requirements of this document can be applied to quick couplers used on other compact machines.
NOTE 3 Quick couplers used on small skid steer loaders and some compact tool carriers can have a different
width requirement than provided in this document. See Annex B.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 6165, Earth-moving machinery — Basic types — Identification and terms and definitions
ISO 13031:2016, Earth-moving machinery — Quick couplers — Safety
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 6165 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
attachment
assembly of components that can be mounted onto the skid steer loader lift arm for specific
...