prEN ISO 20957-2
(Main)Stationary training equipment - Part 2: Strength training equipment, additional specific safety requirements and test methods
Stationary training equipment - Part 2: Strength training equipment, additional specific safety requirements and test methods
ISO 20957-2:2005 specifies additional safety requirements for strength training equipment in addition to the general safety requirements of ISO 20957-1:2005.
ISO 20957-2:2005 is applicable to stationary training equipment type strength training equipment with stack weight resistance or other means of resistance like weight discs, elastic cords, hydraulic, pneumatic and magnetic systems and springs (type 2) with the classes S and H.
Stationäre Trainingsgeräte - Teil 2: Kraft-Trainingsgeräte, zusätzliche besondere sicherheitstechnische Anforderungen und Prüfverfahren
Équipement d'entraînement fixe - Partie 2: Équipement d'entraînement de force, exigences spécifiques de sécurité et méthodes d'essai supplémentaires (ISO/DIS 20957-2:2022)
L'ISO 20957-2:2005 spécifie les exigences de sécurité supplémentaires relatives aux appareils d'entraînement de force, en complément des exigences générales de sécurité de l'ISO 20957-1.
L'ISO 20957-2:2005 s'applique aux appareils d'entraînement fixes de type appareils d'entraînement de force utilisant des piles de poids ou d'autres moyens de résistance comme des disques-poids, de la corde élastique, des systèmes hydrauliques, pneumatiques et magnétiques et des ressorts (type 2) (désignés ci-après comme appareils d'entraînement) avec les classes S et H.
Nepremična oprema za vadbo - 2. del: Oprema za vadbo moči, dodatne posebne varnostne zahteve in preskusne metode (ISO/DIS 20957-2:2022)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 20957-2:2022
01-junij-2022
Nepremična oprema za vadbo - 2. del: Oprema za vadbo moči, dodatne posebne
varnostne zahteve in preskusne metode (ISO/DIS 20957-2:2022)
Stationary training equipment - Part 2: Strength training equipment, additional specific
safety requirements and test methods (ISO/DIS 20957-2:2022)
Stationäre Trainingsgeräte – Teil 2: Kraft-Trainingsgeräte, zusätzliche besondere
sicherheitstechnische Anforderungen und Prüfverfahren (ISO/DIS 20957-2:2022)
Équipement d'entraînement fixe - Partie 2: Équipement d'entraînement de force,
exigences spécifiques de sécurité et méthodes d'essai supplémentaires (ISO/DIS 20957-
2:2022)
Ta slovenski standard je istoveten z: prEN ISO 20957-2
ICS:
97.220.30 Oprema za dvoranske športe Indoor sports equipment
oSIST prEN ISO 20957-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 20957-2:2022
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oSIST prEN ISO 20957-2:2022
DRAFT INTERNATIONAL STANDARD
ISO/DIS 20957-2
ISO/TC 83 Secretariat: DIN
Voting begins on: Voting terminates on:
2022-04-13 2022-07-06
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 circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
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 20957-2:2022(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 2022
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2022
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(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 Stability . 5
5.1.1 General . 5
5.1.2 Externally loaded equipment . 5
5.1.3 User-defined motion equipment . 5
5.2 Loading . 6
5.2.1 Selectorized equipment and alternative resistance training equipment . 6
5.2.2 Externally loaded equipment . 6
5.3 Endurance . 7
5.3.1 General . 7
5.3.2 Additional requirements for externally loaded equipment . 7
5.4 Access to squeeze and/or shear points . 8
5.4.1 Stacked weights or alternative means of resistance . 8
5.4.2 Weight disc clearance for externally loaded weights .13
5.5 Weight disc retention . .13
5.6 Entrapment . 13
5.7 Pull-in points . 13
5.8 Additional instructions for use . 14
5.9 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 testing .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 .18
Annex ZA (informative) Relationship between this European Standard and the safety
requirements of Directive 2001/95/EC aimed to be covered .19
Bibliography .21
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(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 third edition cancels and replaces the second edition (ISO 20957-2:2020), which has been
technically revised.
The main changes compared to the previous edition are as follows:
— referenced standards have been updated with year of edition;
— Note 2 has been added to Clause 1;
— Clause 3 has been updated to add definition and corresponding figure for rack station;
— Clause 5 has been restructured.
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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oSIST prEN ISO 20957-2:2022
DRAFT INTERNATIONAL STANDARD ISO/DIS 20957-2:2022(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 20957-1:2013.
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 (hereinafter referred to as stationary
training equipment) with the classes H, S and I according to ISO 20957-1:2013.
NOTE 1 Free-weight barbell racks are also subject to the requirements of ISO 20957-4:2016 and
ISO 20957-1:2013.
NOTE 2 Accuracy classes are not applicable to this type of stationary training equipment as accuracy classes
will not affect the safety of this equipment.
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 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction
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 20957-1:2013 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 https:// 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.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
Figure 1 — Example of selectorized stationary training 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).
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(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 Figure 2 c). Commonly used names for this equipment are
"Smith press", "Smith Machine" and "multi-press".
a) Chest press b) Multi press
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
c) Leg press d) Rack station
Key
1 catch mechanism 5 work arm
2 adjustable drop stop 6 carriage
3 guide 7 training weight post
4 barbell 8 storage weight post
Figure 2 — Examples for different types of externally loaded guided strength training
equipment
3.10
rack station
cage or rack consisting of support pillars with adjustably-positioned catch mechanisms and drop stops,
used to support a barbell if it is latched or dropped during strength exercisesNote 1 to entry A n
example is shown in Figure 2 d).
3.11
stacked weights
stacked guided weights used as a selectable training load in selectorized equipment
3.12
user-defined motion equipment
equipment where the workout motion is solely defined by the user
Note 1 to entry: An example is shown in Figure 3.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
Figure 3 — Example of user-defined motion equipment
4 Classification
The classification given in ISO 20957-1:2013 shall apply.
5 Safety requirements
5.1 Stability
5.1.1 General
After installation and under foreseeable use 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 20957-1:2013.
5.1.2 Externally loaded equipment
The equipment shall be stable when loaded as specified by the manufacturer either symmetrically or
asymmetrically.
Test in accordance with 6.2.2.
5.1.3 User-defined motion equipment
The equipment shall be stable with maximum load selected as provided by the equipment and with its
stacked weights at its highest point of the range of travel.
Test in accordance with 6.2.3.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
5.2 Loading
5.2.1 Selectorized equipment and alternative resistance training equipment
For equipment classes H, S and I, the intrinsic loading and the extrinsic loading shall be in accordance
with ISO 20957-1:2013.
5.2.2 Externally loaded equipment
5.2.2.1 Weight posts intended for training
For classes S and I, the training weight posts shall withstand a static load of 6 times the maximum load,
as specified by the manufacturer for the training weight post being evaluated.
For class H, the training weight posts shall withstand a static load of 4 times the maximum load, as
specified by the manufacturer for the training weight post being evaluated.
Test in accordance with 6.3.1.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.2.2.2 Weight posts intended for storage
For classes S and I, the storage weight posts shall withstand a single static load of 4 times the maximum
load, as specified by the manufacturer for the storage weight post being evaluated.
For class H, the storage weight posts shall withstand a single static load of 2,5 times the maximum load
as specified by the manufacturer for the storage weight post being evaluated.
Test in accordance with 6.3.2.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.2.2.3 Extrinsic loading
The equipment shall withstand an extrinsic load F as calculated in accordance with Formula (1).
test
F = S(W + 1,5F) (1)
test p a
where
F is the total reactionary load to be applied during the test, in newton;
test
S is the safety factor of 4 for classes S and I, and 2,5 for class H;
W is the user's body weight portion of the load applied to the part of the equipment being evalu-
p
ated, of either 100 kg or the maximum user mass as specified by the manufacturer, whichever
is greater, in newton;
1,5 is the dynamic coefficient;
F is the load applied to the part of the equipment being evaluated, derived from the maximum
a
specified load while performing exercise, in newton.
Test in accordance with 6.3.3.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
5.2.2.4 Catch mechanisms for guided equipment
For classes S and I, the catch mechanism shall withstand a single static load of 6 times the maximum
load as specified by the manufacturer.
For class H, the catch mechanism shall withstand a single static load of 4 times the maximum load as
specified by the manufacturer.
Test in accordance with 6.3.4.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.3 Endurance
5.3.1 General
The equipment shall withstand the endurance requirements in accordance with ISO 20957-1:2013
with a load of the maximum user's body mass as specified in the user's manual or 100 kg, whichever is
greater, and the maximum training load, considering the following:
If the user's body weight is a factor in the loading of the equipment during operation, then the applicable
portion of the maximum user's body mass, as specified in the user's manual, or 100 kg, whichever is
greater, shall be applied to the user support surface at the point of user contact.
Test in accordance with 6.4.1.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.3.2 Additional requirements for externally loaded equipment
5.3.2.1 Work arm actuated equipment
The equipment shall withstand
a) one impact for class H, and
b) ten impacts for classes S and I
of the maximum training load as specified by the manufacturer where the user interfaces with the work
arm travels through a distance of (460 ± 5) mm. If this distance is not achievable, the maximum range
of motion shall be used.
Test in accordance with 6.4.2.1.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.3.2.2 Catch mechanisms of guided equipment
The catch mechanism shall withstand
a) one impact for class H, and
b) ten impacts for classes S and I, each time on the same catch mechanism
of the maximum training load as specified by the manufacturer. The carriage or barbell shall be dropped
+5
(150 ) mm along the guided path. If this distance is not achievable, the maximum range of motion
−0
shall be used.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
Test in accordance with 6.4.2.2.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.3.2.3 Drop stop for guided equipment
The drop stop shall withstand
a) one impact for class H, and
b) ten impacts for classes S and I
of the maximum training load as specified by the manufacturer. The carriage or barbell shall be dropped
+5
(460 ) mm along the guided path. If this distance is not achievable, the maximum range of motion
−0
shall be used.
Test in accordance with 6.4.2.3.
After the test, the training equipment shall not be broken or have visible signs of fracture or cracking
and shall still function as intended by the manufacturer.
5.4 Access to squeeze and/or shear points
5.4.1 Stacked weights or alternative means of resistance
The requirements in 5.5.1.1 and 5.5.1.2 do not apply to externally loaded equipment.
5.4.1.1 Class H
The unintended access by users and/or third parties to squeeze and/or shear points of stacked weights
or other means of resistance shall be prevented by either
a) being fully surrounded by a guard with the exception of a ≤75 mm wide gap for selection of the
stacked weights or other means of resistance, or
b) locking, securing or deactivating the stacked weights or other means of resistance of the training
equipment to prevent movement when the training equipment is not in use.
Test in accordance with 6.1.2 and 6.1.4.
5.4.1.2 Classes S and I
5.4.1.2.1 Guarding for stacked weights
Where stacked weights are behind the user (see Figure 4, vertical plane A-B) in any exercise position as
described in the user's manual, they shall be guarded on all vertical sides. On the side where the weight
is selected, a gap of ≤75 mm is allowed. The guarding shall be ≥60 mm higher than the upper edge of
the stacked weights in its highest position unless the guarding and the top structure form an enclosure.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
Key
1 head, chest or back support
2 stacked weights
3 guarding
4 pin
NOTE 1 A-B is the line drawn laterally from the head, chest or back support in its most onerous position.
NOTE 2 The opening for the pin can be on any of the 4 sides.
Figure 4 — Stacked weights behind the user
If any part of the stacked weights project behind the line A-B, it shall be guarded in accordance with
Figure 5.
Key
1 head, chest or back support
2 stacked weights
3 guarding
4 pin
NOTE A-B is the line drawn laterally from the head, chest or back support in its most onerous position.
Figure 5 — Stacked weights partially behind of A-B
When the totality of the stacked weights is at the side of the user and in front of A-B (see Figure 6), it
shall be guarded at least on the 3 sides furthest from the user.
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oSIST prEN ISO 20957-2:2022
ISO/DIS 20957-2:2022(E)
Key
1 head, chest or back support
2 stacked weights
3 guarding
4 pin
NOTE A-B is the line drawn laterally from the head, chest or back support in its most onerous position.
Figure 6 — Stacked weights in front of A-B
Test in accordance with 6.1.1 and the selection of the stacked weights shall be from the open side.
5.4.1.2.2 No guarding
Where the stacked weights are always in front of the user and visible throughout the exercise without
any important obstruction (s
...
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