ISO 9523:2023 PDF

Touring ski-boots for adults — Interface with touring ski-bindings — Requirements and test methods

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Title (English):

ISO 9523:2023

Touring ski-boots for adults — Interface with touring ski-bindings — Requirements and test methods

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 20
Publication date:: December 6, 2023
Edition:: ISO IS 9523 edition 5 version 1
ICS:: 97.220.20

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Description (English):

This document specifies the dimensions and characteristics of the interface, requirements, test methods and marking of ski-boots with a rigid ski boot sole that are used with current systems of touring ski-bindings with attachment at the boot toe and boot heel, the proper release function of which depends on the dimensions and design of the interfaces. This document is not necessarily applicable to touring ski boots that function independent of the sole shape with certain ski-binding systems. This document is applicable to ski-boots of sizes 15,0 and larger in the Mondopoint system (see Annex A). It is applicable to rigid touring boots. Boots with softer shells such as Telemark boots are excluded as they do not have the necessary shell stability to act as part of the release systems.

Technical details

Technical committee: ISO/TC 83/SC 4 - Snowsports equipment
SKU: ISO 9523:2023

Abstract

Overview

ISO 9523:2023 specifies the interface dimensions, design requirements, test methods and marking for adult touring ski‑boots with a rigid sole that mate with modern touring ski‑bindings (toe and heel attachment). The standard ensures the proper release behaviour of bindings that depend on boot‑sole geometry. It applies to rigid touring boots in Mondopoint sizes 15.0 and larger and excludes softer‑shell systems (e.g., Telemark boots) that lack shell stability.

Key Topics

Scope and applicability
- Rigid touring ski‑boots only; Mondopoint ≥ 15.0.
- Boots that operate independent of sole shape may be outside scope.
Dimensional requirements
- Sole lengths in a pair must not differ by more than 2 mm.
- Toe and heel interface areas must be symmetrical about the median plane within ±1 mm.
- Specific toe and heel geometry tolerances and permitted cut‑outs are defined (see Annex B references in the document).
Design constraints
- Toe side walls: perpendicular to bearing surface to at least 25 mm from toe.
- Heel side walls: perpendicular or tapered 0°–10° up to 70 mm from heel and height 14 mm.
- No part of lower sole should protrude beyond upper profile if side walls are in two parts.
Rigidity and mechanical tests
- Sole deflexion limit: maximum 5 mm under a specified test bar to preserve lateral release performance.
Interface area and friction
- Interface contact area requirements: toe > 25%, heel > 40% of bearing surface.
- Rubber interface materials: Shore A hardness ≥ 65 and **coefficient of dynamic friction

Related standards

Other ISO standards

Overview

Key Topics

Scope and applicability
- Rigid touring ski‑boots only; Mondopoint ≥ 15.0.
- Boots that operate independent of sole shape may be outside scope.
Dimensional requirements
- Sole lengths in a pair must not differ by more than 2 mm.
- Toe and heel interface areas must be symmetrical about the median plane within ±1 mm.
- Specific toe and heel geometry tolerances and permitted cut‑outs are defined (see Annex B references in the document).
Design constraints
- Toe side walls: perpendicular to bearing surface to at least 25 mm from toe.
- Heel side walls: perpendicular or tapered 0°–10° up to 70 mm from heel and height 14 mm.
- No part of lower sole should protrude beyond upper profile if side walls are in two parts.
Rigidity and mechanical tests
- Sole deflexion limit: maximum 5 mm under a specified test bar to preserve lateral release performance.
Interface area and friction
- Interface contact area requirements: toe > 25%, heel > 40% of bearing surface.
- Rubber interface materials: Shore A hardness ≥ 65 and **coefficient of dynamic friction

ISO 9523:2023 PDF

Technical details

Abstract

Overview

Key Topics

Related standards

Abstract

Overview

Key Topics

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