Stationary training equipment - Part 2: Strength training equipment, additional specific safety requirements and test methods (ISO 20957-2:2020)

This part of ISO 20957 specifies additional safety requirements for stationary strength training equipment in addition to the general safety requirements of ISO 20957-1.
This part of ISO 20957 is applicable to stationary training equipment type strength training equipment with stack weight resistance or other means of resistance like elastic cords, hydraulic, pneumatic, electrical, magnetic, springs and externally loaded weights (type 2) (hereinafter referred to as training equipment) with the classes H, S and I according to ISO 20957-1.
NOTE Free-weight barbell racks are subject to the requirements of ISO 20957-4 and ISO 20957-1.

Stationäre Trainingsgeräte - Teil 2: Kraft-Trainingsgeräte, zusätzliche besondere sicherheitstechnische Anforderungen und Prüfverfahren (ISO 20957-2:2020)

Dieses Dokument legt weitere sicherheitstechnische Anforderungen für stationäre Kraft Trainingsgeräte fest.
Es ist vorgesehen dieses Dokument in Verbindung mit den allgemeinen sicherheitstechnischen Anforderungen nach ISO 20957 1, anzuwenden.
Dieses Dokument gilt für stationäre Trainingsgeräte vom Typ Kraft Trainingsgeräte (Typ 2) (im Folgenden Trainingsgeräte genannt) der Klassen H, S und I nach ISO 20957 1, bei denen der Widerstand durch Steckgewichte oder andere Widerstandssysteme, wie elastische Bänder, Hydraulik, Pneumatik, Elektronik, Magnetkraft, Federn und extern belastete Gewichte aufgebaut wird.
ANMERKUNG   Ablagen für Langhanteln mit freien Gewichten unterliegen den Anforderungen von ISO 20957 4 und ISO 20957 1.

Équipement d'entraînement fixe - Partie 2: Équipement d'entraînement de force, exigences spécifiques de sécurité et méthodes d'essai supplémentaires (ISO 20957-2:2020)

Le présent document spécifie des exigences de sécurité supplémentaires pour les équipements d'entraînement fixes de force.
Le présent document est destiné à être lu conjointement aux exigences de sécurité générales figurant dans l'ISO 20957‑1.
Le présent document s'applique aux équipements d'entraînement fixes de type équipements d'entraînement de force utilisant une résistance à l'aide de piles de poids ou d'autres moyens de résistance comme de la corde élastique, des systèmes hydrauliques, pneumatiques, électriques, magnétiques ou à ressorts et des poids chargés par l'extérieur (type 2) (équipements désignés ci-après par « équipements d'entraînement ») de classes H, S et I, conformément à l'ISO 20957‑1.
NOTE Les supports de poids et d'haltères libres sont soumis aux exigences de l'ISO 20957‑4 et de l'ISO 20957‑1.

Nepremična oprema za vadbo - 2. del: Oprema za vadbo moči, dodatne posebne varnostne zahteve in preskusne metode (ISO 20957-2:2020)

General Information

Status
Not Published
Public Enquiry End Date
19-Mar-2019
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
23-Jun-2021
Due Date
28-Aug-2021

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SLOVENSKI STANDARD
oSIST prEN ISO 20957-2:2019
01-marec-2019
1HSUHPLþQDRSUHPD]DYDGERGHO2SUHPD]DYDGERPRþLGRGDWQHSRVHEQH
YDUQRVWQH]DKWHYHLQSUHVNXVQHPHWRGH ,62',6

Stationary training equipment - Part 2: Strength training equipment, additional specific

safety requirements and test methods (ISO/DIS 20957-2:2019)

Stationäre Trainingsgeräte - Teil 2: Kraft-Trainingsgeräte, zusätzliche besondere

sicherheitstechnische Anforderungen und Prüfverfahren (ISO/DIS 20957-2:2019)
Équipement d'entraînement fixe - Partie 2: Équipement d'entraînement de force,

exigences spécifiques de sécurité et méthodes d'essai supplémentaires (ISO/DIS 20957-

2:2019)
Ta slovenski standard je istoveten z: prEN ISO 20957-2
ICS:
97.220.30 Oprema za dvoranske športe Indoor sports equipment
oSIST prEN ISO 20957-2:2019 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN ISO 20957-2:2019
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oSIST prEN ISO 20957-2:2019
DRAFT INTERNATIONAL STANDARD
ISO/DIS 20957-2
ISO/TC 83 Secretariat: DIN
Voting begins on: Voting terminates on:
2019-01-07 2019-04-01
Stationary training equipment —
Part 2:
Strength training equipment, additional specific safety
requirements and test methods
Équipement d'entraînement fixe —

Partie 2: Équipement d'entraînement de force, exigences spécifiques de sécurité et méthodes d'essai

supplémentaires
ICS: 97.220.30
THIS DOCUMENT IS A DRAFT CIRCULATED
This document is circulated as received from the committee secretariat.
FOR COMMENT AND APPROVAL. IT IS
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
ISO/CEN PARALLEL PROCESSING
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 20957-2:2019(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION. ISO 2019
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2019

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
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Phone: +41 22 749 01 11
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Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2019 – All rights reserved
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..................................................................................................................................................................................................................................v

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

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

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

4 Classification ............................................................................................................................................................................................................ 3

5 Safety requirements ......................................................................................................................................................................................... 4

5.1 General ........................................................................................................................................................................................................... 4

5.2 Stability .......................................................................................................................................................................................................... 4

5.2.1 General...................................................................................................................................................................................... 4

5.2.2 Externally loaded equipment ................................................................................................................................ 4

5.3 Loading .......................................................................................................................................................................................................... 4

5.3.1 Selectorized equipment and alternative resistance training equipment ........................ 4

5.3.2 Externally loaded equipment ................................................................................................................................ 4

5.4 Endurance ................................................................................................................................................................................................... 5

5.4.1 General...................................................................................................................................................................................... 5

5.4.2 Additional requirements for externally loaded equipment ........................................................ 6

5.5 Access to squeeze and/or shear points ............................................................................................................................. 6

5.5.1 Stacked weights or alternative means of resistance ......................................................................... 6

5.5.2 Weight disc clearance for externally loaded weights ....................................................................10

5.6 Weight disk retention .....................................................................................................................................................................11

5.7 Entrapment .............................................................................................................................................................................................11

5.8 Pull-in points .........................................................................................................................................................................................11

5.9 Additional instructions for use ..............................................................................................................................................12

5.10 Additional marking ..........................................................................................................................................................................13

6 Test methods ..........................................................................................................................................................................................................13

6.1 General ........................................................................................................................................................................................................13

6.1.1 Dimensional check ......................................................................................................................................................13

6.1.2 Visual examination ......................................................................................................................................................13

6.1.3 Tactile examination.....................................................................................................................................................13

6.1.4 Performance test ...........................................................................................................................................................13

6.2 Testing of externally loaded equipment .........................................................................................................................13

6.3 Loading test ............................................................................................................................................................................................14

6.3.1 Weight posts intended for training ...............................................................................................................14

6.3.2 Weight posts intended for storage.................................................................................................................14

6.3.3 Extrinsic loading test ........................................................................................................................................... ......14

6.3.4 Catch mechanism for guided path equipment loading test .....................................................14

6.4 Endurance test .....................................................................................................................................................................................14

6.4.1 General...................................................................................................................................................................................14

6.4.2 Additional requirements for externally loaded equipment .....................................................14

6.5 Testing the weight support ........................................................................................................................................................15

6.6 Drop test for guided barbell equipment ........................................................................................................................15

7 Test report ................................................................................................................................................................................................................15

© ISO 2019 – All rights reserved iii
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(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 on 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 the following

URL: www .iso .org/iso/foreword .html.

ISO 20957-2 was prepared by the European Committee for Standardization (CEN) Technical Committee

CEN/TC 136, Sports, playground and other recreational facilities and equipment, in collaboration with

ISO Technical Committee ISO/TC 83, Sports and other recreational facilities and equipment, in accordance

with the Agreement on technical cooperation between ISO and CEN (Vienna Agreement).

This second edition cancels and replaces the first edition (ISO 20957-2:2005), which has been

technically revised.
The main changes compared to the previous edition are as follows:
— the formulation has been aligned to ISO 20957-1;
— specific terms and definitions for Part 2 have been added to Clause 3;
— Clause 5 has been specified and restructured;
— Clause 6 has been specified and restructured;

— Additional requirements for externally loaded equipment have been added to Clause 5 and 6;

A list of all parts in the ISO 20957- series can be found on the ISO website.
iv © ISO 2019 – All rights reserved
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
Introduction
This part of ISO 20957 concerns the safety of strength training equipment.

This part of ISO 20957 amends and supplements ISO 20957-1. The requirements of this specific standard

take precedence over those in the general standard.
© ISO 2019 – All rights reserved v
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oSIST prEN ISO 20957-2:2019
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oSIST prEN ISO 20957-2:2019
DRAFT INTERNATIONAL STANDARD ISO/DIS 20957-2:2019(E)
Stationary training equipment —
Part 2:
Strength training equipment, additional specific safety
requirements and test methods
1 Scope

This part of ISO 20957 specifies additional safety requirements for stationary strength training

equipment in addition to the general safety requirements of ISO 20957-1.

This part of ISO 20957 is applicable to stationary training equipment type strength training equipment

with stack weight resistance or other means of resistance like elastic cords, hydraulic, pneumatic,

electrical, magnetic, springs and externally loaded weights (type 2) (hereinafter referred to as training

equipment) with the classes H, S and I according to ISO 20957-1.

NOTE Free-weight barbell racks are subject to the requirements of ISO 20957-4 and ISO 20957-1.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are

indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

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

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

ISO/TR 7250-2:2010, Basic human body measurements for technological design — Part 2: Statistical

summaries of body measurements from national populations
3 Terms and definitions

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

3.1
selectorized equipment

strength training equipment where the resistance means is a load that is an integral part of the device

and can be varied by the user without adding or removing components to and from the equipment

3.2
externally loaded equipment

strength training equipment where the main resistance means is a load that is not an integral part of

the device and can be varied by the user by adding or removing components to and from the equipment

Note 1 to entry: Components to be added or removed are e. g. weight discs or bands.

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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
3.3
guided barbell equipment

various types of vertical or inclined frame structure with an integral constrained bar for loading

weight plates which travels along a guided path with indexing engagement means that allow the bar to

be started and stopped at multiple positions along the range of travel

Note 1 to entry: Examples are shown in Figure 1b) and Figure 1c). Commonly used names for this equipment are

"Smith press", "Smith Machine" and "multipress".
3.4
drop stop

a permanent or adjustable constructive element creating a preset minimum stop position that provides

the user with clearance to avoid entrapment without any further action of the user

3.5
catch mechanism

rest or holder for a barbell on a guided barbell equipment, or for a carriage on a sled leg press need to

engaged by the user, from which the user can begin the exercise motion or end at the completion of the

exercise
3.6
maximum storage load

load that can be applied to weight post and/or external weight storage equipment as specified by the

manufacturer
3.7
maximum specified training load

maximum working load as specified by the manufacturer, but not including the user weight

3.8
work arm

a component of a strength training equipment that allows the user to activate a resistance means

controlled and directed motion for a specific exercise

Note 1 to entry: An example for equipment where this component is relevant is shown in Figure 1a).

3.9
training resistance
force or torque exerted by the user to perform the exercise
3.10
weight post

structure protruding from the frame of externally loaded equipment for the purpose of holding weight

either for a resistance means or for storage
3.11
work arm actuated externally loaded training equipment

equipment where the external load is attached directly or indirectly to a movement mechanism that is

displaced intentionally by the user
Note 1 to entry: An example is shown in Figure 1a).
3.12
guided externally loaded strength training equipment

equipment where the external load is placed on a weight post affixed to a carriage that is moving on

guided path
Note 1 to entry: Examples are shown in Figure 1b) and Figure 1c).
2 © ISO 2019 – All rights reserved
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
Key
1 catch mechanism 4 barbell
2 drop stop 5 work arm
3 guid 6 carriage

Figure 1 — Examples for different types of externally loaded strength training equipment -

a) Work arm activated b) and c) guided types
3.13
stacked weights
guided weights stacked together where the training load can be selected
4 Classification
ISO 20957-1 applies.
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oSIST prEN ISO 20957-2:2019
ISO/DIS 20957-2:2019(E)
5 Safety requirements
5.1 General

Depending on the design of the training equipment the following requirements shall apply as

appropriate.
5.2 Stability
5.2.1 General

The equipment shall be stable in any direction and loading condition in training, folding and storage

positions.
Test in accordance with the stability test in ISO 2
...

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