EN ISO 20957-2:2021

SLOVENSKI STANDARD
01-september-2021
Nadomešča:
SIST EN 957-2:2003
Nepremična oprema za vadbo - 2. del: Oprema za vadbo moči, dodatne posebne
varnostne zahteve in preskusne metode (ISO 20957-2:2020)
Stationary training equipment - Part 2: Strength training equipment, additional specific
safety requirements and test methods (ISO 20957-2:2020)
Stationäre Trainingsgeräte - Teil 2: Kraft-Trainingsgeräte, zusätzliche besondere
sicherheitstechnische Anforderungen und Prüfverfahren (ISO 20957-2:2020)
Équipement d'entraînement fixe - Partie 2: Équipement d'entraînement de force,
exigences spécifiques de sécurité et méthodes d'essai supplémentaires (ISO 20957-
2:2020)
Ta slovenski standard je istoveten z: EN ISO 20957-2:2021
ICS:
97.220.30 Oprema za dvoranske športe Indoor sports equipment
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 20957-2
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2021
EUROPÄISCHE NORM
ICS 97.220.30 Supersedes EN 957-2:2003
English Version
Stationary training equipment - Part 2: Strength training
equipment, additional specific safety requirements and
test methods (ISO 20957-2:2020)
Équipement d'entraînement fixe - Partie 2: Stationäre Trainingsgeräte - Teil 2: Kraft-
Équipement d'entraînement de force, exigences Trainingsgeräte, zusätzliche besondere
spécifiques de sécurité et méthodes d'essai sicherheitstechnische Anforderungen und
supplémentaires (ISO 20957-2:2020) Prüfverfahren (ISO 20957-2:2020)
This European Standard was approved by CEN on 30 July 2020.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 20957-2:2021 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 20957-2:2021) has been prepared by Technical Committee ISO/TC 83 "Sports
and other recreational facilities and equipment" in collaboration with Technical Committee CEN/TC
136 “Sports, playground and other recreational facilities and equipment” the secretariat of which is held
by DIN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by December 2021, and conflicting national standards
shall be withdrawn at the latest by December 2021.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 957-2:2003.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 20957-2:2020 has been approved by CEN as EN ISO 20957-2:2021 without any
modification.
INTERNATIONAL ISO
STANDARD 20957-2
Second edition
2020-08
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
Reference number
ISO 20957-2:2020(E)
©
ISO 2020
ISO 20957-2:2020(E)
© 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.
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CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved

ISO 20957-2:2020(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Classification . 5
5 Safety requirements . 5
5.1 General . 5
5.2 Stability . 5
5.2.1 General. 5
5.2.2 Externally loaded equipment . 5
5.2.3 User-defined motion equipment . 6
5.3 Loading . 6
5.3.1 Selectorized equipment and alternative resistance training equipment . 6
5.3.2 Externally loaded equipment . 6
5.4 Endurance . 7
5.4.1 General. 7
5.4.2 Additional requirements for externally loaded equipment . 7
5.5 Access to squeeze and/or shear points . 8
5.5.1 Stacked weights or alternative means of resistance . 8
5.5.2 Weight disc clearance for externally loaded weights .13
5.6 Weight disc retention .13
5.7 Entrapment .13
5.8 Pull-in points .13
5.9 Additional instructions for use .14
5.10 Additional marking .15
6 Test methods .15
6.1 General .15
6.1.1 Dimensional check .15
6.1.2 Visual examination .15
6.1.3 Tactile examination.15
6.1.4 Performance test .15
6.2 Stability testing .15
6.2.1 General.15
6.2.2 Externally loaded equipment .15
6.2.3 User-defined motion equipment .16
6.3 Loading test .16
6.3.1 Weight posts intended for training .16
6.3.2 Weight posts intended for storage.16
6.3.3 Extrinsic loading test . .16
6.3.4 Catch mechanisms for guided equipment loading test .17
6.4 Endurance test .17
6.4.1 General.17
6.4.2 Additional requirements for externally loaded equipment .17
7 Test report .17
Bibliography .18
ISO 20957-2:2020(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 Technical Committee ISO/TC 83, Sports and other recreational facilities
and equipment, Subcommittee, in collaboration with the European Committee for Standardization (CEN)
Technical Committee CEN/TC 136, Sports, playground 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 with ISO 20957-1;
— Clause 3 has been updated;
— Clause 5 has been specified and restructured;
— Clause 6 has been specified and restructured;
— additional requirements for externally loaded equipment have been added to Clauses 5 and 6.
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.
iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 20957-2:2020(E)
Stationary training equipment —
Part 2:
Strength training equipment, additional specific safety
requirements and test methods
1 Scope
This document specifies additional safety requirements for stationary strength training equipment.
This document is intended to be read in conjunction with the general safety requirements of ISO 20957-1.
This document is applicable to stationary training equipment type strength training equipment with
stacked weight resistance or other means of resistance, such as 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 are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 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
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 20957-1 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
selectorized equipment
strength training equipment where the resistance means is a load that is an integral part of the device
that can be varied by the user without adding or removing components to and from the equipment
Note 1 to entry: An example of equipment where this component is relevant is shown in Figure 1.
ISO 20957-2:2020(E)
Figure 1 — Example of selectorized guided type 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 which 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, for example, weight discs or bands.
3.3
drop stop
permanent or adjustable constructive element creating a pre-set minimum stop position that provides
the user with clearance to avoid entrapment without any further action of the user
3.4
catch mechanism
rest or holder for a barbell or for a carriage on guided equipment (3.9), which needs to be engaged by the
user, from which the user can begin the exercise motion or end at the completion of the exercise
3.5
work arm
component of strength training equipment that allows the user to activate resistance means for a
specific exercise
Note 1 to entry: An example of equipment where this component is relevant is shown in Figure 2 a).
3.6
training resistance
force or torque exerted by the user to perform the exercise
3.7
weight post
structure protruding from the frame of externally loaded equipment (3.2) for the purpose of holding
weight either for a resistance means or for storage
Note 1 to entry: An example of equipment where this component is relevant is shown in Figure 2 b) and 2 c).
2 © ISO 2020 – All rights reserved

ISO 20957-2:2020(E)
3.8
work arm actuated 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 2 a).
3.9
guided equipment
equipment where the external load is placed on a weight post (3.7) affixed to a carriage that is moving
on a guided path
Note 1 to entry: Examples are shown in Figure 2 b) and 2 c). Commonly used names for this equipment are "Smith
press", "Smith Machine" and "multi-press".
Note 2 to entry:
ISO 20957-2:2020(E)
a) Chest press b) Multi press
c) Leg press
Key
1 catch mechanism 5 work arm
2 adjustable dro
...