Stationary training equipment

This document specifies safety requirements and test methods for treadmills in addition to the general safety requirements and test methods of ISO 20957‑1. It is intended that this document is applied together with ISO 20957‑1. This document deals with significant hazards, hazardous situations and events relevant to stationary training equipment used as intended and under the conditions of misuse foreseeable by the manufacturer (see Clause 4). This document is applicable to power-driven as well as to non-power/manually driven training equipment type treadmills (hereafter referred to as treadmills) with the classes S, H and I and classes A, B and C regarding accuracy. This document is not applicable to treadmills which are manufactured before it publication.

Équipement d'entraînement fixe

Le présent document fixe des exigences de sécurité et des méthodes d'essai applicables aux tapis de course, en complément des exigences de sécurité générales et des méthodes d'essai qui figurent dans ISO 20957-1. Le présent document est destiné ŕ ętre appliqué avec l'ISO 20957-1. Le présent document traite des phénomčnes dangereux significatifs, des situations et des événements dangereux liés aux appareils d'entraînement fixes utilisés comme prévu et dans les conditions de mauvais usage prévisible par le fabricant (voir Article 4). Le présent document est applicable aux appareils d'entraînement entraînés manuellement ou par un moteur, de type «tapis de course» (appelés ci-aprčs «tapis de course») des classes S, H et I et des classes A, B et C en ce qui concerne la précision. Le présent document ne s'applique pas aux tapis de course qui ont été fabriqués avant la date de sa publication.

General Information

Status
Published
Publication Date
07-Feb-2021
Current Stage
5060 - Close of voting Proof returned by Secretariat
Start Date
18-Dec-2020
Completion Date
18-Dec-2020
Ref Project

RELATIONS

Effective Date
23-Apr-2020

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INTERNATIONAL ISO
STANDARD 20957-6
Second edition
2021-02
Stationary training equipment —
Part 6:
Treadmills, additional specific safety
requirements and test methods
Équipement d'entraînement fixe —
Partie 6: Tapis de course, exigences spécifiques de sécurité et
méthodes d'essai supplémentaires
Reference number
ISO 20957-6:2021(E)
ISO 2021
---------------------- Page: 1 ----------------------
ISO 20957-6:2021(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2021

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: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 20957-6:2021(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 List of significant hazards ........................................................................................................................................................................... 3

5 Classification ............................................................................................................................................................................................................ 3

6 Safety requirements and/or protective measures ............................................................................................................ 5

6.1 General ........................................................................................................................................................................................................... 5

6.2 Squeeze and shear points within the accessible area ........................................................................................... 5

6.3 Transmission elements and rotating parts ..................................................................................................................... 6

6.4 Temperature rise ................................................................................................................................................................................... 6

6.5 Safety stop (emergency stop) ..................................................................................................................................................... 6

6.5.1 General...................................................................................................................................................................................... 6

6.5.2 Characteristics ................................................................................................................................................................... 6

6.5.3 Actuator(s) ............................................................................................................................................................................ 7

6.6 Immobilization method ................................................................................................................................................................... 7

6.7 Stability .......................................................................................................................................................................................................... 7

6.8 Static strength of the running surface ................................................................................................................................ 7

6.9 Endurance ................................................................................................................................................................................................... 7

6.10 Handrails ...................................................................................................................................................................................................... 8

6.10.1 General...................................................................................................................................................................................... 8

6.10.2 Treadmills with side handrails only ................................................................................................................ 8

6.10.3 Treadmills with front handlebar and side handrails ........................................................................ 8

6.11 Foot rails ....................................................................................................................................................................................................... 8

6.12 Running surface ..................................................................................................................................................................................... 8

6.13 Acceleration ............................................................................................................................................................................................... 9

6.14 Heart rate control mode .................................................................................................................................................................. 9

6.15 Folding treadmills ................................................................................................................................................................................ 9

6.16 Noise ................................................................................................................................................................................................................ 9

6.17 Electrical safety ...................................................................................................................................................................................... 9

6.18 Additional classified requirements ....................................................................................................................................... 9

6.19 Additional warning label .............................................................................................................................................................11

7 Verification of the safety requirements and/or protective measures .......................................................11

7.1 Testing of transmission elements and rotating parts .........................................................................................11

7.2 Testing of temperature rise .......................................................................................................................................................11

7.3 Testing of the safety stop (emergency stop) ..............................................................................................................11

7.4 Testing of the actuator(s) ............................................................................................................................................................11

7.5 Testing of immobilization method ......................................................................................................................................11

7.6 Stability testing ....................................................................................................................................................................................12

7.6.1 Testing in training position ..................................................................................................................................12

7.6.2 Testing in folded position ......................................................................................................................................12

7.6.3 Testing of the foot rail support system ......................................................................................................12

7.7 Load testing of the running surface ...................................................................................................................................12

7.8 Testing of endurance .......................................................................................................................................................................12

7.8.1 Requirement for the test apparatus .............................................................................................................12

7.8.2 Test method .......................................................................................................................................................................12

7.9 Testing of side handrails/front handlebar ...................................................................................................................14

7.10 Testing of foot rails ...........................................................................................................................................................................14

7.11 Testing of the running surface ................................................................................................................................................14

7.12 Testing of the acceleration .........................................................................................................................................................14

7.13 Testing of the heart rate control mode ............................................................................................................................14

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ISO 20957-6:2021(E)

7.14 Testing of the folding treadmills ...........................................................................................................................................14

7.14.1 Inadvertent release when packaged ............................................................................................................14

7.14.2 For treadmills where the running surface is designed to be folded up

when stored.......................................................................................................................................................................14

7.14.3 For treadmills where the console is designed to be folded down when stored .....15

7.14.4 Testing the maximum handling force .........................................................................................................15

7.15 Testing of the accuracy of time, speed and distance indications ..............................................................15

7.16 Noise testing ...........................................................................................................................................................................................15

8 Test report ................................................................................................................................................................................................................15

9 Marking .......................................................................................................................................................................................................................16

10 Additional instructions for use...........................................................................................................................................................16

Bibliography .............................................................................................................................................................................................................................18

iv © ISO 2021 – All rights reserved
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ISO 20957-6:2021(E)
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 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 the European Committee for Standardization (CEN) (as EN 957-

6:2010+A1: 2014) and was adopted, without modification other than those given below by Technical

Committee ISO/TC 83, Sports and other recreational facilities and equipment.
— references to EN documents were replaced with their equivalent ISO standard;
— in Clause 4, the NOTE was changed to body text;
— in 6.1, "comply" changed to "conform";
— in 6.11, in the NOTE, "may" was changed to "might";
— in Clause 9, the footnote was changed to a NOTE;
— minor editorial changes.

This second edition cancels and replaces the first edition (ISO 20957-6:2005), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— specifications and definitions amended;
— list of significant hazards added (Clause 4);
— modification of safety requirements and/ or protective measures (Clause 6);
— deletion of the reference to ISO 5904 in 6.11;

— requirements and test methods for the transmission elements and rotating parts amended;

— requirements and test methods for safety stop amended;
1) Withdrawn.
© ISO 2021 – All rights reserved v
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ISO 20957-6:2021(E)
— requirements for the static loading, especially for class S amended;
— requirement for the endurance testing of class I added;

— requirements and test methods for treadmills with front handlebar and side handrails amended;

— requirements for the footrail amended;

— requirements for the permanent marking and test methods of the running surface added;

— requirements and test methods for the acceleration of power-driven treadmills added;

— requirements and test methods for folding treadmills added;
— requirements and test methods for the heart rate control mode added;
— requirements and test methods for noise added;
— requirements for the marking of the maximum lateral position added;
— modification of the testing of endurance (7.8);

— modification of the testing of the accuracy of time, speed and distance indications (7.15);

— requirements for the test report and marking added;
— additional instructions for use extended;
— modification of Figure 1;
— addition of Figure 2;
— modification of Figure 3;
— editorial changes.
A list of all parts in the ISO 20957 series can be found on the ISO website.

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.

vi © ISO 2021 – All rights reserved
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ISO 20957-6:2021(E)
Introduction
This document is a type C standard as stated in ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and hazardous events

are covered are indicated in the scope of this document.

When provisions of this type C standard are different from those which are stated in type A or B

standards, the provisions of this type C standard take precedence over the provisions of the other

standards, for machines that have been designed and built according to the provisions of this type C

standard.
© ISO 2021 – All rights reserved vii
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INTERNATIONAL STANDARD ISO 20957-6:2021(E)
Stationary training equipment —
Part 6:
Treadmills, additional specific safety requirements and
test methods
1 Scope

This document specifies safety requirements and test methods for treadmills in addition to the general

safety requirements and test methods of ISO 20957-1. It is intended that this document is applied

together with ISO 20957-1.

This document deals with significant hazards, hazardous situations and events relevant to stationary

training equipment used as intended and under the conditions of misuse foreseeable by the

manufacturer (see Clause 4).

This document is applicable to power-driven as well as to non-power/manually driven training

equipment type treadmills (hereafter referred to as treadmills) with the classes S, H and I and classes A,

B and C regarding accuracy.

This document is not applicable to treadmills which are manufactured before it publication.

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.

EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements

(IEC 60335‑1:2010, modified)

EN 60601-1, Medical electrical equipment — Part 1: General requirements for basic safety and essential

performance (IEC 60601‑1:2005)

ISO 11201, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound

pressure levels at a work station and at other specified positions in an essentially free field over a reflecting

plane with negligible environmental corrections

ISO 11202, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound

pressure levels at a work station and at other specified positions applying approximate environmental

corrections

ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction

ISO 12947-1:1998, Textiles — Determination of the abrasion resistance of fabrics by the Martindale

method — Part 1: Martindale abrasion testing apparatus

ISO 20957-1:2013, Stationary training equipment — Part 1: General safety requirements and test methods

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 20957-1 and the following apply.

© ISO 2021 – All rights reserved 1
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ISO 20957-6:2021(E)

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
treadmill

training equipment with a running surface on which walking or running activity takes place, where the

feet are free to leave the running surface
3.2
length of the running surface
usable length of the running surface
Note 1 to entry: See l in Figure 2.

Note 2 to entry: Figure 1 is intended only to give examples and to illustrate the names of the components.

3.3
width of the running surface
usable width of the running surface excluding rear roller guards
Note 1 to entry: See b in Figure 2.
3.4
front handlebar

frontally located bar provided for partially supporting the user’s weight with the user’s arm(s) and

enhancing stability whilst exercising and to assist in emergency dismounts
EXAMPLE At low speed and high inclines.
3.5
side handrail

rail(s) located at the sides of the running surface provided for partially supporting the user’s weight

with the user’s arm(s) and enhancing stability whilst exercising and to assist in emergency dismounts

3.6
foot rail

area beside the running surface intended for the user to stand on when mounting, dismounting or

during a pause in the exercise
3.7
emergency dismount

act of the user quickly interrupting the exercise by getting off the running surface

Note 1 to entry: Emergency dismount can be done e.g. by grabbing the front handlebar or both side handrails and

jumping with both feet on the foot rails.
3.8
heart rate control mode

programme that allows the user to train maintaining a predetermined pulse level by adjusting the

speed and/or incline automatically according to the actual pulse of the user
3.9
display
device that provides information to the user
3.10
protective cover
cover provided to protect the user from inadvertent access to hazardous parts
EXAMPLE Moving parts, gear systems or hot surfaces.
2 © ISO 2021 – All rights reserved
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ISO 20957-6:2021(E)
3.11
folding treadmill

treadmill designed with some components that can be moved to allow a more compact non-useable

storage position
4 List of significant hazards

Table 1 shows the significant hazards, hazardous situations and events, as far as they are dealt with in

this document, identified by risk assessment as significant for this type of equipment and which require

action to eliminate or reduce the risk.

For a particular treadmill, a risk assessment should be carried out by the manufacturer to identify any

additional significant hazards so that suitable protective measures can be taken. Additional hazards

are outside the scope of this standard.
For identification and evaluation of hazards, ISO 12100 shall apply.

Table 1 — List of significant hazards and major sources of these hazards associated with

treadmills
*) Description Associated activity/situation
1. Mechanical hazards
1.1. Crushing Inclining
Folding
1.2. Shearing Inclining
Folding
1.3. Drawing-in or Trapping Rear roller
Drive system
1.4. Falling Sudden starts/stops
Excessive speed variation
Support failure
1.5. Abrasion Contact with moving running surface
1.6. Slippery surfaces Slipping and Falling
1.7. Stored energy Folded treadmills falling down
Springs or elastomeric devices prior to
assembly
2. Electrical hazards
2.1. Electrocution Contact with live components
3. Thermal Hazards
3.1 Burns Contact with hot surfaces
4. Hazards generated by neglecting ergo-
nomic principles in design process
4.1. Ineffective ergonomics Size or location of support surfaces
Running surface dimensions
4.2. Human errors, human behaviour Reasonably foreseeable misuse
5. Noise Hazards
5.1. Disturbing acoustic communication Moving treadmill motor and belt
5 Classification
ISO 20957-1:2013, Clause 4 shall apply.
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ISO 20957-6:2021(E)
Key
1 display
2 safety stop (cord type)
3 safety stop (mushroom type)
4 heart rate hand sensor
5 front handlebar
6 side handrail
7 front protective cover
8 foot rail
9 non slip surface
10 running deck
11 running surface
12 rear roller
13 rear roller protective cover
14 marking of the running surface
Figure 1 — Example of a treadmill
4 © ISO 2021 – All rights reserved
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ISO 20957-6:2021(E)
Key
A line located at 1/3 of the length of the running surface measured from B
B front end of the running surface
identifiable feature according to 6.3
b width of the running surface
b minimum required width of the running surface according to Table 2
min
l length of the running surface
Figure 2 — Definition of main measures
6 Safety requirements and/or protective measures
6.1 General

The equipment shall conform with the safety requirements and/or protective measures of this clause.

In addition, the equipment shall be designed according to the principles of ISO 12100 for relevant but

not significant hazards, which are not dealt with by this document.

Fixed guards shall be fixed by systems that can be opened or removed only with tools. Fixed guards

that have to be removed for maintenance, adjustment or inspection shall be retained by fasteners that

are retained in the guard or machine when the guard is removed.
6.2 Squeeze and shear points within the accessible area

All parts of treadmills, including any folding mechanism, shall be in accordance with ISO 20957-1:2013,

5.3.3 and 5.3.4 in folded position, during folding and in useable position. For folding treadmills the lock

for securing the equipment is excluded.

Where the inclination can be changed during operation thus causing the distance between any part of

the equipment and the floor to become smaller than 60 mm, the speed of inclination shall not exceed

1°/s and the user shall be able to stop this movement.
© ISO 2021 – All rights reserved 5
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ISO 20957-6:2021(E)
6.3 Transmission elements and rotating parts

Drawing-in shall be prevented at all points between the running surface and fixed or moving parts of

the treadmills or the floor.

Identifiable feature(s) indicating the acceptable lateral position(s) of the running surface shall be

provided on the treadmill [see footnote in Figure 2 and Clause 10 g)].

When tested in accordance with 7.1, it shall not be possible that the test finger becomes trapped between

the rear roller guard and the running surface. With the running surface centred, the rear roller guard

shall overlap the edges of the running surfaces by min. 10 mm and max. 40 mm (see Figure 3).

The vertical gap between the running surface and the rear roller guard or overlapping foot rails shall

not be more than 9,5 mm.
Dimensions in millimetres
Figure 3 — Example of a rear roller guard (min. 10 mm and max. 40 mm)
6.4 Temperature rise

When tested in accordance with 7.2, accessible parts of the treadmill shall not have a temperature

greater than 65 °C.
6.5 Safety stop (emergency stop)
6.5.1 General

All power-driven treadmills shall be equipped with a safety stop switch, which shall include a push-

button operated switch and/or a pull-cord operated switch.

The push-button type or pull cord safety stop actuator shall be in a reachable position in front of the

user and in an area of ±180 mm parallel to the centreline of the running surface.

Test in accordance with 7.3.

If the push-button type safety stop actuator is outside this area it shall be duplicated on the opposite

side except when a pull-cord actuator is provided.
6.5.2 Characteristics

Operating the safety stop shall result in the machine cutting off the main power of the motor and the

inclination system without relying on any software functions.

The contacts of manually operated safety stop devices shall ensure positive opening. The achievement

of contacts separation shall be the direct result of a specified movement of the switch actuator through

non-resilient members. Emergency stop relays or manually reset fail-safe relays may be used.

It shall not be possible to restore the circuit until the actuator of the safety stop device has been

manually reset. After restoring the circuit, the equipment shall restart with standstill and the incline

6 © ISO 2021 – All rights reserved
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ISO 20957-6:2021(E)

shall stay the same or reset according to 6.2. Where several safety stop devices are provided, the circuit

shall not be restored until all actuators previously operated have been reset.
Test in accordance with 7.3.
6.5.3 Actuator(s)

Actuators of safety stop devices shall be coloured red. The actuator of a push-button o

...

NORME ISO
INTERNATIONALE 20957-6
Deuxième édition
2021-02
Équipement d'entraînement fixe —
Partie 6:
Tapis de course, exigences spécifiques
de sécurité et méthodes d'essai
supplémentaires
Stationary training equipment —
Part 6: Treadmills, additional specific safety requirements and test
methods
Numéro de référence
ISO 20957-6:2021(F)
ISO 2021
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ISO 20957-6:2021(F)
DOCUMENT PROTÉGÉ PAR COPYRIGHT
© ISO 2021

Tous droits réservés. Sauf prescription différente ou nécessité dans le contexte de sa mise en œuvre, 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, ou la diffusion sur l’internet ou sur un intranet, sans autorisation écrite préalable. Une autorisation peut

être demandée à l’ISO à l’adresse ci-après ou au comité membre de l’ISO dans le pays du demandeur.

ISO copyright office
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CH-1214 Vernier, Genève
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E-mail: copyright@iso.org
Web: www.iso.org
Publié en Suisse
ii © ISO 2021 – Tous droits réservés
---------------------- Page: 2 ----------------------
ISO 20957-6:2021(F)
Sommaire Page

Avant-propos ................................................................................................................................................................................................................................v

Introduction ..............................................................................................................................................................................................................................vii

1 Domaine d’application ................................................................................................................................................................................... 1

2 Références normatives ................................................................................................................................................................................... 1

3 Termes et définitions ....................................................................................................................................................................................... 2

4 Liste des phénomènes dangereux significatifs ..................................................................................................................... 3

5 Classification ............................................................................................................................................................................................................ 4

6 Exigences de sécurité et/ou mesures de protection ....................................................................................................... 6

6.1 Généralités .................................................................................................................................................................................................. 6

6.2 Points de compression et de cisaillement dans la zone accessible ............................................................ 6

6.3 Éléments de transmission et pièces en rotation ........................................................................................................ 7

6.4 Hausse de température .................................................................................................................................................................... 7

6.5 Arrêt de sécurité (arrêt d’urgence) ....................................................................................................................................... 7

6.5.1 Généralités ............................................................................................................................................................................ 7

6.5.2 Caractéristiques ................................................................................................................................................................ 7

6.5.3 Actionneur(s) ...................................................................................................................................................................... 8

6.6 Méthode d’immobilisation ............................................................................................................................................................ 8

6.7 Stabilité .......................................................................................................................................................................................................... 8

6.8 Résistance statique de la surface d’exercice .................................................................................................................. 8

6.9 Endurance ................................................................................................................................................................................................... 8

6.10 Rampes .......................................................................................................................................................................................................... 9

6.10.1 Généralités ............................................................................................................................................................................ 9

6.10.2 Tapis de course comportant uniquement des rampes latérales ............................................. 9

6.10.3 Tapis de course comportant une barre antérieure et des rampes latérales ................. 9

6.11 Marchepieds .............................................................................................................................................................................................. 9

6.12 Surface d’exercice ..............................................................................................................................................................................10

6.13 Accélération ............................................................................................................................................................................................10

6.14 Mode de résistance en fonction du rythme cardiaque ......................................................................................10

6.15 Tapis de course pliants ..................................................................................................................................................................10

6.16 Bruit ...............................................................................................................................................................................................................10

6.17 Sécurité électrique ............................................................................................................................................................................11

6.18 Exigences supplémentaires concernant les classes .............................................................................................11

6.19 Étiquette d’avertissement supplémentaire .................................................................................................................12

7 Vérification des exigences de sécurité et/ou mesures de protection .........................................................12

7.1 Essai des éléments de transmission et des pièces en rotation ...................................................................12

7.2 Essai de hausse de température ...........................................................................................................................................12

7.3 Essai de l’arrêt de sécurité (arrêt d’urgence) ............................................................................................................13

7.4 Essai des actionneurs .....................................................................................................................................................................13

7.5 Essai du mécanisme d’immobilisation ............................................................................................................................13

7.6 Essai de stabilité .................................................................................................................................................................................13

7.6.1 Essai en position d’entraînement ...................................................................................................................13

7.6.2 Essai en position pliée ..............................................................................................................................................13

7.6.3 Essai du système support des marchepieds .........................................................................................13

7.7 Essai de charge de la surface d’exercice .........................................................................................................................13

7.8 Essai d’endurance ..............................................................................................................................................................................14

7.8.1 Exigences relatives à l’appareillage d’essai............................................................................................14

7.8.2 Méthode d’essai .............................................................................................................................................................14

7.9 Essai portant sur les rampes latérales/la barre antérieure ..........................................................................15

7.10 Essai portant sur les marchepieds ......................................................................................................................................15

7.11 Essai portant sur la surface d’exercice ............................................................................................................................16

7.12 Essai d’accélération ..........................................................................................................................................................................16

7.13 Essai du mode de résistance en fonction du rythme cardiaque ................................................................16

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ISO 20957-6:2021(F)

7.14 Essai des tapis de course pliants ..........................................................................................................................................16

7.14.1 Libération inopinée dans l’emballage ........................................................................................................16

7.14.2 Tapis de course dont la surface d’exercice est conçue pour être pliée en

configuration de stockage .....................................................................................................................................16

7.14.3 Tapis de course dont le pupitre de commande est conçu pour être plié en

configuration de stockage .....................................................................................................................................16

7.14.4 Essai de la force maximale de manipulation ........................................................................................16

7.15 Essai de la précision des indications de temps, de vitesse et de distance ........................................17

7.16 Essai portant sur le bruit .............................................................................................................................................................17

8 Rapport d’essai ....................................................................................................................................................................................................17

9 Marquage ...................................................................................................................................................................................................................18

10 Instructions supplémentaires d’utilisation...........................................................................................................................18

Bibliographie ...........................................................................................................................................................................................................................19

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ISO 20957-6:2021(F)
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 (IEC) 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/IEC, 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/IEC, Partie 2 (voir www

.iso .org/ directives).

L'attention est attirée 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 dans la liste des déclarations de

brevets reçues par l'ISO (voir www .iso .org/ brevets).

Les appellations commerciales éventuellement mentionnées dans le présent document sont données

pour information, par souci de commodité, à l’intention des utilisateurs et ne sauraient constituer un

engagement.

Pour une explication de la nature volontaire des normes, la signification des termes et expressions

spécifiques de l'ISO liés à l'évaluation de la conformité, ou pour toute information au sujet de l'adhésion

de l'ISO aux principes de l’Organisation mondiale du commerce (OMC) concernant les obstacles

techniques au commerce (OTC), voir www .iso .org/ avant -propos.

Le présent document a été élaboré par le Comité Européen de Normalisation (CEN) (en tant que

l’EN 957-6:2010+A1: 2014) et a été adopté, sans modification autre que celles indiquées ci-dessous, par

le comité technique ISO/TC 83, Matériel et équipements de sports et autres activités de loisirs.

— remplacement des références aux documents EN par des références à des normes ISO équivalentes;

— modification de la NOTE à l’Article 4, en corps de texte;

— modification de «comply» en «conform» en 6.1; (ne concerne que la version anglaise)

— modification de «may» en «might» en 6.11; (ne concerne que la version anglaise)

— modification de la note de bas de page en NOTE à l’Article 9;
— modifications rédactionnelles mineures.

Cette deuxième édition annule et remplace la première édition (ISO 20957-6:2005), qui a fait l’objet

d’une révision technique.

Les principales modifications par rapport à l’édition précédente sont les suivantes:

— modification des spécifications et définitions;
— ajout de la liste des phénomènes dangereux significatifs (Article 4);

— modification des exigences de sécurité et/ou mesures de protection (Article 6);

— suppression de la référence à l’ISO 5904 en 6.11;
1) Retirée.
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ISO 20957-6:2021(F)

— modification des exigences et méthodes d’essai pour les éléments de transmission et parties

rotatives;
— modification des exigences et méthodes d’essai pour les arrêts de sécurité;

— modification des exigences relatives à la charge statique, notamment pour la classe S;

— ajout d’exigences relatives à l’essai d’endurance de la classe I;

— modification des exigences et méthodes d’essai pour les tapis de course comportant une barre

antérieure et des rampes latérales;
— modification des exigences relatives au marchepied;

— ajout d’exigences relatives au marquage permanent ainsi qu’aux méthodes d’essai de la surface

d’exercice;

— ajout d’exigences et de méthodes d’essai relatives à l’accélération des tapis de couse entraînés par

un moteur;

— ajout d’exigences et de méthodes d’essai relatives aux tapis de course pliants;

— ajout d’exigences ainsi que de méthodes d’essai relatives au mode de résistance en fonction du

rythme cardiaque;
— ajout d’exigences et de méthodes d’essai relatives au bruit;
— ajout d’exigences relatives au marquage de la position latérale maximale;
— modification de l’essai d’endurance (7.8);

— modification de l’essai de la précision des indications de temps, de vitesse et de distance (7.15);

— ajout d’exigences relatives au rapport d’essai ainsi qu’au marquage;
— développement des instructions d’utilisation supplémentaires;
— modification de la Figure 1;
— ajout de la Figure 2;
— modification de la Figure 3;
— modifications rédactionnelles.

Une liste de toutes les parties de la série ISO 20957 se trouve sur le site web de l’ISO.

Il convient que l’utilisateur adresse tout retour d’information ou toute question concernant le présent

document à l’organisme national de normalisation de son pays. Une liste exhaustive desdits organismes

se trouve à l’adresse www .iso .org/ fr/ members .html
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ISO 20957-6:2021(F)
Introduction
Le présent document est une norme de type C selon l’ISO 12100.

Les machines concernées et l’étendue des phénomènes dangereux, des situations dangereuses et des

événements dangereux couverts sont indiqués dans le domaine d’application du présent document.

Lorsque des dispositions de cette norme de type C sont différentes de celles qui sont indiquées dans

les normes de type A ou B, les dispositions de cette norme de type C prévalent sur les dispositions des

autres normes, pour les machines ayant été conçues et construites conformément aux dispositions de la

présente norme de type C.
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NORME INTERNATIONALE ISO 20957-6:2021(F)
Équipement d'entraînement fixe —
Partie 6:
Tapis de course, exigences spécifiques de sécurité et
méthodes d'essai supplémentaires
1 Domaine d’application

Le présent document fixe des exigences de sécurité et des méthodes d’essai applicables aux tapis de

course, en complément des exigences de sécurité générales et des méthodes d’essai qui figurent dans

ISO 20957-1. Le présent document est destiné à être appliqué avec l’ISO 20957-1.

Le présent document traite des phénomènes dangereux significatifs, des situations et des événements

dangereux liés aux appareils d’entraînement fixes utilisés comme prévu et dans les conditions de

mauvais usage prévisible par le fabricant (voir Article 4).

Le présent document est applicable aux appareils d’entraînement entraînés manuellement ou par

un moteur, de type «tapis de course» (appelés ci-après «tapis de course») des classes S, H et I et des

classes A, B et C en ce qui concerne la précision.

Le présent document ne s’applique pas aux tapis de course qui ont été fabriqués avant la date de sa

publication.
2 Références normatives

Les documents suivants sont cités dans le texte de sorte qu’ils constituent, pour tout ou partie de leur

contenu, des exigences du présent document. Pour les références datées, seule l’édition citée s’applique.

Pour les références non datées, la dernière édition du document de référence s'applique (y compris les

éventuels amendements).

EN 60335-1, Appareils électrodomestiques et analogues — Sécurité — Partie 1: Exigences générales

(IEC 60335‑1:2010, modifiée)

EN 60601-1, Appareils électromédicaux — Partie 1: Exigences générales pour la sécurité de base et les

performances essentielles (IEC 60601‑1:2005)

ISO 11201, Acoustique — Bruit émis par les machines et équipements — Détermination des niveaux de

pression acoustique d'émission au poste de travail et en d'autres positions spécifiées dans des conditions

approchant celles du champ libre sur plan réfléchissant avec des corrections d'environnement négligeables

ISO 11202, Acoustique — Bruit émis par les machines et équipements — Détermination des niveaux de

pression acoustique d'émission au poste de travail et en d'autres positions spécifiées en appliquant des

corrections d'environnement approximatives

ISO 12100, Sécurité des machines — Principes généraux de conception — Appréciation du risque et

réduction du risque

ISO 12947-1:1998, Textiles — Détermination de la résistance à l'abrasion des étoffes par la méthode

Martindale — Partie 1: Appareillage d'essai d'abrasion de Martindale

ISO 20957-1:2013, Équipement d'entraînement fixe — Partie 1: Exigences générales de sécurité et

méthodes d'essai
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ISO 20957-6:2021(F)
3 Termes et définitions

Pour les besoins du présent document, les termes et les définitions de l’ISO 20957-1 ainsi que les

suivants s’appliquent.

L’ISO et l’IEC tiennent à jour des bases de données terminologiques destinées à être utilisées en

normalisation, consultables aux adresses suivantes:

— ISO Online browsing platform: disponible à l’adresse https:// www .iso .org/ obp

— IEC Electropedia: disponible à l’adresse http:// www .electropedia .org/
3.1
tapis de course

appareil d’entraînement comportant une surface d’exercice sur laquelle il est possible de marcher ou

courir, les pieds pouvant quitter librement la surface d’exercice
3.2
longueur de la surface d’exercice
longueur utilisable de la surface d’exercice
Note 1 à l'article: Voir l dans la Figure 2.

Note 2 à l'article: La Figure 1 n’est destinée qu’à fournir des exemples et à illustrer les dénominations des divers

éléments constitutifs.
3.3
largeur de la surface d’exercice

largeur utilisable de la surface d’exercice, excepté les protecteurs du rouleau arrière

Note 1 à l'article: Voir b dans la Figure 2.
3.4
barre antérieure

barre frontale prévue pour supporter une partie du poids de l’utilisateur, qui s’appuie dessus avec les

bras, et pour augmenter la stabilité pendant l’exercice et faciliter les dégagements d’urgence

EXEMPLE À faible vitesse et forte inclinaison.
3.5
rampes latérales

rampes situées sur les côtés de la surface d’exercice, prévues pour supporter une partie du poids de

l’utilisateur, qui s’appuie dessus avec les bras, et pour augmenter la stabilité pendant l’exercice et

faciliter les dégagements d’urgence
3.6
marchepied

zone située à côté de la surface d’exercice, sur laquelle l’utilisateur pose le pied lorsqu’il s’installe sur

l’appareil, en descend ou lorsqu’il fait une pause en cours d’exercice
3.7
dégagement d’urgence

action de l’utilisateur qui interrompt subitement l’exercice en dégageant la surface d’exercice

Note 1 à l'article: Un dégagement d’urgence peut s’effectuer, par exemple, en saisissant la barre antérieure ou les

rampes latérales et en sautant pour placer les deux pieds sur les marchepieds.
3.8
mode de résistance en fonction du rythme cardiaque

programme permettant à l’utilisateur de s’entraîner en maintenant un niveau prédéterminé de

pulsations cardiaques, par un réglage automatique de la vitesse et/ou de l’inclinaison en fonction du

pouls réel de l’utilisateur
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ISO 20957-6:2021(F)
3.9
console d’affichage
dispositif qui fournit des informations à l’utilisateur
3.10
carter de protection

carter destiné à protéger l’utilisateur contre tout accès involontaire à des parties dangereuses

EXEMPLE Parties mobiles, engrenages ou surfaces très chaudes.
3.11
tapis de course pliant

tapis de course dont le déplacement de certaines pièces permet d’adopter une configuration de stockage

non opérationnelle mais plus compacte
4 Liste des phénomènes dangereux significatifs

Le Tableau 1 présente les phénomènes dangereux significatifs, situations et événements dangereux

traités dans le présent document et identifiés par l’appréciation du risque comme étant significatifs

pour ce type d’appareil et qui nécessitent une action pour éliminer ou diminuer le risque.

Pour un tapis de course particulier, il convient que le fabricant procède à une appréciation du risque

pour identifier tous les phénomènes dangereux significatifs supplémentaires, de façon à pouvoir

prendre des mesures de protection appropriées. Les phénomènes dangereux supplémentaires ne font

pas partie du domaine d’application de la présente norme.

Pour l’identification et l’évaluation des phénomènes dangereux, l’ISO 12100 s’applique.

Tableau 1 — Liste des phénomènes dangereux significatifs et des principales sources de ces

phénomènes dangereux associés aux tapis de course
*) Description Activité/situation associée
1. Phénomènes dangereux mécaniques
1.1. Écrasement Inclinaison
Pliage
1.2. Cisaillement Inclinaison
Pliage
1.3. Entraînement ou emprisonnement Rouleau arrière
Système d’entraînement
1.4. Chute Démarrages/arrêts brutaux
Variation de vitesse excessive
Défaut du support
1.5. Abrasion Contact avec une surface d’exercice mobile
1.6. Surfaces glissantes Dérapage et chute
1.7. Énergie accumulée Chute des tapis de course pliés
Ressorts ou dispositifs en élastomère avant
assemblage
2. Phénomènes dangereux électriques
2.1. Électrocution Contact avec des éléments sous tension
3. Phénomènes dangereux thermiques
3.1 Brûlures Contact avec des surfaces chaudes
4. Phénomènes dangereux engendrés par le
non-respect des principes ergonomiques
lors de la conception
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ISO 20957-6:2021(F)
Tableau 1 (suite)
*) Description Activité/situation associée
4.1. Ergonomie inexistante Dimensions ou emplacement des surfaces
de support
Dimensions de la surface d’exercice

4.2. Erreurs humaines, comportement humain Mauvais usage raisonnablement prévisible

5. Phénomènes dangereux engendrés par
le bruit

5.1. Perturbation de la communication orale Moteur et courroie du tapis de course en

mouvement
5 Classification
L’Article 4 de l’ISO 20957-1:2013 doit s’appliquer.
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ISO 20957-6:2021(F)
Légende
1 console d’affichage
2 arrêt de sécurité (type cordon)
3 arrêt de sécurité (type champignon)
4 capteur manuel du rythme cardiaque
5 barre antérieure
6 rampes latérales
7 carter de protection antérieur
8 marchepied
9 surface antidérapante
10 planche de course
11 surface d’exercice
12 rouleau arrière
13 carter de protection du rouleau arrière
14 marquage de la surface d’exercice
Figure 1 — Exemple de tapis de course
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ISO 20957-6:2021(F)
Légende

A ligne située à 1/3 de la longueur de la surface d’exercice mesurée à partir de B

B extrémité avant de la surface d’exercice
élément identifiable selon 6.3
b largeur de la surface d’exercice
b largeur minimale requise de la surface d’exercice selon le Tableau 2
min
l longueur de la surface d’exercice
Figure 2 — Définition des mesures principales
6 Exigences de sécurité et/ou mesures de protection
6.1 Généralités

L’appareil doit être conforme aux exigences de sécurité et/ou aux mesures de protection du présent

article. De plus, l’appareil doit être conçu conformément aux principes de l’ISO 12100 en ce qui concerne

les phénomènes dangereux appropriés mais non significatifs, qui ne sont pas traités dans le présent

document.

Les protecteurs fixes doivent être fixés par des systèmes qui ne peuvent être ouverts ou retirés qu’avec

des outils. Les protecteurs fixes devant être enlevés pour la maintenance, le réglage ou l’inspection,

doivent être maintenus par des fixations qui sont conservées dans le protecteur ou la machine lorsque

le protecteur est enlevé.
6.2 Points de compression et de cisaillement dans la zone accessible

Toutes les parties des tapis de course, y compris les mécanismes de pliage, s’il y a lieu, doivent être

conformes à 5.3.3 et 5.3.4 de l’ISO 20957-1:2013, en position pliée, pendant le pliage et en position

d’utilisation. Pour les tapis de course pliants, le système de verrouillage est exclu.

Lorsque le niveau d’inclinaison peut être modifié en cours de fonctionnement, et qu’ainsi la distance

entre tout élément de l’appareil et le sol devient inférieure à 60 mm, la vitesse d’inclinaison ne doit pas

dépasser 1°/s et l’utilisateur doit pouvoir mettre fin à ce mouvement.
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ISO 20957-6:2021(F)
6.3 Éléments de transmission et pièces en rotation

Tout risque d’entraînement au niveau de l’ensemble des interfaces doit être évité entre la surface

d’exercice et les pièces fix
...

INTERNATIONAL ISO
STANDARD 20957-6
Second edition
Stationary training equipment —
Part 6:
Treadmills, additional specific safety
requirements and test methods
Équipement d'entraînement fixe —
Partie 6: Tapis de course, exigences spécifiques de sécurité et
méthodes d'essai supplémentaires
PROOF/ÉPREUVE
Reference number
ISO 20957-6:2020(E)
ISO 2020
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ISO 20957-6:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© 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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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
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ISO 20957-6:2020(E)
Contents Page

Foreword ..........................................................................................................................................................................................................................................v

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 List of significant hazards ........................................................................................................................................................................... 3

5 Classification ............................................................................................................................................................................................................ 3

6 Safety requirements and/or protective measures ............................................................................................................ 5

6.1 General ........................................................................................................................................................................................................... 5

6.2 Squeeze and shear points within the accessible area ........................................................................................... 5

6.3 Transmission elements and rotating parts ..................................................................................................................... 6

6.4 Temperature rise ................................................................................................................................................................................... 6

6.5 Safety stop (emergency stop) ..................................................................................................................................................... 6

6.5.1 General...................................................................................................................................................................................... 6

6.5.2 Characteristics ................................................................................................................................................................... 6

6.5.3 Actuator(s) ............................................................................................................................................................................ 7

6.6 Immobilization method ................................................................................................................................................................... 7

6.7 Stability .......................................................................................................................................................................................................... 7

6.8 Static strength of the running surface ................................................................................................................................ 7

6.9 Endurance ................................................................................................................................................................................................... 7

6.10 Handrails ...................................................................................................................................................................................................... 8

6.10.1 General...................................................................................................................................................................................... 8

6.10.2 Treadmills with side handrails only ................................................................................................................ 8

6.10.3 Treadmills with front handlebar and side handrails ........................................................................ 8

6.11 Foot rails ....................................................................................................................................................................................................... 8

6.12 Running surface ..................................................................................................................................................................................... 8

6.13 Acceleration ............................................................................................................................................................................................... 9

6.14 Heart rate control mode .................................................................................................................................................................. 9

6.15 Folding treadmills ................................................................................................................................................................................ 9

6.16 Noise ................................................................................................................................................................................................................ 9

6.17 Electrical safety ...................................................................................................................................................................................... 9

6.18 Additional classified requirements ....................................................................................................................................... 9

6.19 Additional warning label .............................................................................................................................................................11

7 Verification of the safety requirements and/or protective measures .......................................................11

7.1 Testing of transmission elements and rotating parts .........................................................................................11

7.2 Testing of temperature rise .......................................................................................................................................................11

7.3 Testing of the safety stop (emergency stop) ..............................................................................................................11

7.4 Testing of the actuator(s) ............................................................................................................................................................11

7.5 Testing of immobilization method ......................................................................................................................................11

7.6 Stability testing ....................................................................................................................................................................................12

7.6.1 Testing in training position ..................................................................................................................................12

7.6.2 Testing in folded position ......................................................................................................................................12

7.6.3 Testing of the foot rail support system ......................................................................................................12

7.7 Load testing of the running surface ...................................................................................................................................12

7.8 Testing of endurance .......................................................................................................................................................................12

7.8.1 Requirement for the test apparatus .............................................................................................................12

7.8.2 Test method .......................................................................................................................................................................12

7.9 Testing of side handrails/front handlebar ...................................................................................................................14

7.10 Testing of foot rails ...........................................................................................................................................................................14

7.11 Testing of the running surface ................................................................................................................................................14

7.12 Testing of the acceleration .........................................................................................................................................................14

7.13 Testing of the heart rate control mode ............................................................................................................................14

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ISO 20957-6:2020(E)

7.14 Testing of the folding treadmills ...........................................................................................................................................14

7.14.1 Inadvertent release when packaged ............................................................................................................14

7.14.2 For treadmills where the running surface is designed to be folded up

when stored.......................................................................................................................................................................14

7.14.3 For treadmills where the console is designed to be folded down when stored .....15

7.14.4 Testing the maximum handling force .........................................................................................................15

7.15 Testing of the accuracy of time, speed and distance indications ..............................................................15

7.16 Noise testing ...........................................................................................................................................................................................15

8 Test report ................................................................................................................................................................................................................15

9 Marking .......................................................................................................................................................................................................................16

10 Additional instructions for use...........................................................................................................................................................16

Bibliography .............................................................................................................................................................................................................................18

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ISO 20957-6:2020(E)
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 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 the European Committee for Standardization (CEN) (as EN 957-

6:2010+A1: 2014) and was adopted, without modification other than those given below by Technical

Committee ISO/TC 83, Sports and other recreational facilities and equipment.
— references to EN documents were replaced with their equivalent ISO standard;
— in Clause 4, the NOTE was changed to body text;
— in 6.1, "comply" changed to "conform";
— in 6.11, in the NOTE, "may" was changed to "might";
— in Clause 9, the footnote was changed to a NOTE;
— minor editorial changes.

This second edition cancels and replaces the first edition (ISO 20957-6:2005), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— specifications and definitions amended;
— list of significant hazards added (Clause 4);
— modification of safety requirements and/ or protective measures (Clause 6);
— deletion of the reference to ISO 5904 in 6.11;

— requirements and test methods for the transmission elements and rotating parts amended;

— requirements and test methods for safety stop amended;
1) Withdrawn.
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ISO 20957-6:2020(E)
— requirements for the static loading, especially for class S amended;
— requirement for the endurance testing of class I added;

— requirements and test methods for treadmills with front handlebar and side handrails amended;

— requirements for the footrail amended;

— requirements for the permanent marking and test methods of the running surface added;

— requirements and test methods for the acceleration of power-driven treadmills added;

— requirements and test methods for folding treadmills added;
— requirements and test methods for the heart rate control mode added;
— requirements and test methods for noise added;
— requirements for the marking of the maximum lateral position added;
— modification of the testing of endurance (7.8);

— modification of the testing of the accuracy of time, speed and distance indications (7.15);

— requirements for the test report and marking added;
— additional instructions for use extended;
— modification of Figure 1;
— addition of Figure 2;
— modification of Figure 3;
— editorial changes.
A list of all parts in the ISO 20957 series can be found on the ISO website.

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.

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ISO 20957-6:2020(E)
Introduction
This document is a type C standard as stated in ISO 12100.

The machinery concerned and the extent to which hazards, hazardous situations and hazardous events

are covered are indicated in the scope of this document.

When provisions of this type C standard are different from those which are stated in type A or B

standards, the provisions of this type C standard take precedence over the provisions of the other

standards, for machines that have been designed and built according to the provisions of this type C

standard.
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INTERNATIONAL STANDARD ISO 20957-6:2020(E)
Stationary training equipment —
Part 6:
Treadmills, additional specific safety requirements and
test methods
1 Scope

This document specifies safety requirements and test methods for treadmills in addition to the general

safety requirements and test methods of ISO 20957-1. It is intended that this document is applied

together with ISO 20957-1.

This document deals with significant hazards, hazardous situations and events relevant to stationary

training equipment used as intended and under the conditions of misuse foreseeable by the

manufacturer (see Clause 4).

This document is applicable to power-driven as well as to non-power/manually driven training

equipment type treadmills (hereafter referred to as treadmills) with the classes S, H and I and classes A,

B and C regarding accuracy.

This document is not applicable to treadmills which are manufactured before it publication.

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.

EN 60335-1, Household and similar electrical appliances — Safety — Part 1: General requirements

(IEC 60335‑1:2010, modified)

EN 60601-1, Medical electrical equipment — Part 1: General requirements for basic safety and essential

performance (IEC 60601‑1:2005)

ISO 11201, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound

pressure levels at a work station and at other specified positions in an essentially free field over a reflecting

plane with negligible environmental corrections

ISO 11202, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound

pressure levels at a work station and at other specified positions applying approximate environmental

corrections

ISO 12100, Safety of machinery — General principles for design — Risk assessment and risk reduction

ISO 12947-1:1998, Textiles — Determination of the abrasion resistance of fabrics by the Martindale

method — Part 1: Martindale abrasion testing apparatus

ISO 20957-1, Stationary training equipment — Part 1: General safety requirements and test methods

3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 20957-1 and the following apply.

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ISO 20957-6:2020(E)

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
treadmill

training equipment with a running surface on which walking or running activity takes place, where the

feet are free to leave the running surface
3.2
length of the running surface
usable length of the running surface
Note 1 to entry: See l in Figure 2.

Note 2 to entry: Figure 1 is intended only to give examples and to illustrate the names of the components.

3.3
width of the running surface
usable width of the running surface excluding rear roller guards
Note 1 to entry: See b in Figure 2.
3.4
front handlebar

frontally located bar provided for partially supporting the user’s weight with the user’s arm(s) and

enhancing stability whilst exercising and to assist in emergency dismounts
EXAMPLE At low speed and high inclines.
3.5
side handrail

rail(s) located at the sides of the running surface provided for partially supporting the user’s weight

with the user’s arm(s) and enhancing stability whilst exercising and to assist in emergency dismounts

3.6
foot rail

area beside the running surface intended for the user to stand on when mounting, dismounting or

during a pause in the exercise
3.7
emergency dismount

act of the user quickly interrupting the exercise by getting off the running surface

Note 1 to entry: Emergency dismount can be done e.g. by grabbing the front handlebar or both side handrails and

jumping with both feet on the foot rails.
3.8
heart rate control mode

programme that allows the user to train maintaining a predetermined pulse level by adjusting the

speed and/or incline automatically according to the actual pulse of the user
3.9
display
device that provides information to the user
3.10
protective cover
cover provided to protect the user from inadvertent access to hazardous parts
EXAMPLE Moving parts, gear systems or hot surfaces.
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ISO 20957-6:2020(E)
3.11
folding treadmill

treadmill designed with some components that can be moved to allow a more compact non-useable

storage position
4 List of significant hazards

Table 1 shows the significant hazards, hazardous situations and events, as far as they are dealt with in

this document, identified by risk assessment as significant for this type of equipment and which require

action to eliminate or reduce the risk.

For a particular treadmill, a risk assessment should be carried out by the manufacturer to identify any

additional significant hazards so that suitable protective measures can be taken. Additional hazards

are outside the scope of this standard.
For identification and evaluation of hazards, ISO 12100 shall apply.

Table 1 — List of significant hazards and major sources of these hazards associated with

treadmills
*) Description Associated activity/situation
1. Mechanical hazards
1.1. Crushing Inclining
Folding
1.2. Shearing Inclining
Folding
1.3. Drawing-in or Trapping Rear roller
Drive system
1.4. Falling Sudden starts/stops
Excessive speed variation
Support failure
1.5. Abrasion Contact with moving running surface
1.6. Slippery surfaces Slipping and Falling
1.7. Stored energy Folded treadmills falling down
Springs or elastomeric devices prior to
assembly
2. Electrical hazards
2.1. Electrocution Contact with live components
3. Thermal Hazards
3.1 Burns Contact with hot surfaces
4. Hazards generated by neglecting ergo-
nomic principles in design process
4.1. Ineffective ergonomics Size or location of support surfaces
Running surface dimensions
4.2. Human errors, human behaviour Reasonably foreseeable misuse
5. Noise Hazards
5.1. Disturbing acoustic communication Moving treadmill motor and belt
5 Classification
ISO 20957-1:2013, Clause 4 shall apply.
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ISO 20957-6:2020(E)
Key
1 display
2 safety stop (cord type)
3 safety stop (mushroom type)
4 heart rate hand sensor
5 front handlebar
6 side handrail
7 front protective cover
8 foot rail
9 non slip surface
10 running deck
11 running surface
12 rear roller
13 rear roller protective cover
14 marking of the running surface
Figure 1 — Example of a treadmill
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ISO 20957-6:2020(E)
Key
A line located at 1/3 of the length of the running surface measured from B
B front end of the running surface
identifiable feature according to 6.3
b width of the running surface
b minimum required width of the running surface according to Table 2
min
l length of the running surface
Figure 2 — Definition of main measures
6 Safety requirements and/or protective measures
6.1 General

The equipment shall conform with the safety requirements and/or protective measures of this clause.

In addition, the equipment shall be designed according to the principles of ISO 12100 for relevant but

not significant hazards, which are not dealt with by this document.

Fixed guards shall be fixed by systems that can be opened or removed only with tools. Fixed guards

that have to be removed for maintenance, adjustment or inspection shall be retained by fasteners that

are retained in the guard or machine when the guard is removed.
6.2 Squeeze and shear points within the accessible area

All parts of treadmills, including any folding mechanism, shall be in accordance with ISO 20957-1:2013,

5.3.3 and 5.3.4 in folded position, during folding and in useable position. For folding treadmills the lock

for securing the equipment is excluded.

Where the inclination can be changed during operation thus causing the distance between any part of

the equipment and the floor to become smaller than 60 mm, the speed of inclination shall not exceed

1°/s and the user shall be able to stop this movement.
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ISO 20957-6:2020(E)
6.3 Transmission elements and rotating parts

Drawing-in shall be prevented at all points between the running surface and fixed or moving parts of

the treadmills or the floor.

Identifiable feature(s) indicating the acceptable lateral position(s) of the running surface shall be

provided on the treadmill [see footnote in Figure 2 and Clause 10 g)].

When tested in accordance with 7.1, it shall not be possible that the test finger becomes trapped between

the rear roller guard and the running surface. With the running surface centred, the rear roller guard

shall overlap the edges of the running surfaces by min. 10 mm and max. 40 mm (see Figure 3).

The vertical gap between the running surface and the rear roller guard or overlapping foot rails shall

not be more than 9,5 mm.
Dimensions in millimetres
Figure 3 — Example of a rear roller guard (min. 10 mm and max. 40 mm)
6.4 Temperature rise

When tested in accordance with 7.2, accessible parts of the treadmill shall not have a temperature

greater than 65 °C.
6.5 Safety stop (emergency stop)
6.5.1 General

All power-driven treadmills shall be equipped with a safety stop switch, which shall include a push-

button operated switch and/or a pull-cord operated switch.

The push-button type or pull cord safety stop actuator shall be in a reachable position in front of the

user and in an area of ±180 mm parallel to the centreline of the running surface.

Test in accordance with 7.3.

If the push-button type safety stop actuator is outside this area it shall be duplicated on the opposite

side except when a pull-cord actuator is provided.
6.5.2 Characteristics

Operating the safety stop shall result in the machine cutting off the main power of the motor and the

inclination system without relying on any software functions.

The contacts of manually operated safety stop devices shall ensure positive opening. The achievement

of contacts separation shall be the direct result of a specified movement of the switch actuator through

non-resilient members. Emergency stop relays or manually reset fail-safe relays may be used.

It shall not be possible to restore the circuit until the actuator of the safety stop device has been

manually reset. After restoring the circuit, the equipment shall restart with standstill and the incline

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ISO 20957-6:2020(E)

shall stay the same or reset according to 6.2. Where several safety stop devices are provided, the circuit

shall not be restored until all actuators previously ope
...

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