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.
