ISO 12240-4:1998
(Main)Spherical plain bearings — Part 4: Spherical plain bearing rod ends
Spherical plain bearings — Part 4: Spherical plain bearing rod ends
This part of ISO 12240 specifies dimensions, tolerances and radial internal clearances for various dimension series of spherical plain bearing rod ends. The dimensions and tolerances specified in this part of ISO 12240 have been selected to permit the design and use of spherical plain bearing rod ends which incorporate radial spherical plain bearings having various sliding material combinations. The specified tolerance values apply for finished spherical plain bearing rod ends before any coating, plating, ring splitting or fracturing. Spherical plain bearing rod ends need not conform to the designs illustrated but compliance is required as regards dimensions, tolerances and radial internal clearances specified. NOTE — Spherical plain bearing rod ends for airframe applications and specific spherical plain baring rod ends for direct connection to hydraulic cylinders are not covered by this part of ISO 12240.
Rotules lisses — Partie 4: Embouts à rotule
La présente partie de l'ISO 12240 prescrit les dimensions, les tolérances et les jeux internes radiaux pour diverses séries de dimensions d'embouts à rotule. Les dimensions et tolérances prescrites dans la présente partie de l'ISO 12240 ont été choisies pour permettre la conception et l'utilisation d'embouts à rotule qui incorporent des rotules lisses radiales avec un grand choix de combinaisons de matériaux de glissement. Les valeurs prescrites pour les tolérances s'appliquent aux embouts à rotule obtenus avant tout revêtement, plaquage, fente ou rupture de la bague. Les embouts à rotule ne sont pas censés se conformer aux schémas donnés ici ; la conformité n'est requise que pour les dimensions, tolérances et jeux internes radiaux prescrits. NOTE — Les embouts à rotule pour les applications aéronautiques et les embouts à rotule directement liés à des cylindres hydrauliques ne sont pas couverts par la présente partie de l'ISO 12240.
Kroglasti drsni zgibi - 4. del: Glava kroglastih drsnih zgibov
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INTERNATIONAL ISO
STANDARD 12240-4
First edition
1998-08-15
Spherical plain bearings —
Part 4:
Spherical plain bearing rod ends
Rotules lisses —
Partie 4: Embouts à rotule
Reference number
A
ISO 12240-4:1998(E)
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ISO 12240-4:1998(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standard 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.
Draft International Standards adopted by the technical committees are circulated to the member bodies for
voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 12240-4 was prepared by Technical Committee ISO/TC 4, Rolling bearings,
Subcommittee SC 7, Spherical plain bearings.
This first edition cancels and replaces ISO 6126:1987 of which it constitutes a technical revision.
ISO 12240 consists of the following parts, under the general title Spherical plain bearings:
— Part 1: Radial spherical plain bearings
— Part 2: Angular contact radial spherical plain bearings
— Part 3: Thrust spherical plain bearings
— Part 4: Spherical plain bearing rod ends
© ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
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©
INTERNATIONAL STANDARD ISO ISO 12240-4:1998(E)
Spherical plain bearings —
Part 4:
Spherical plain bearing rod ends
1 Scope
This part of ISO 12240 specifies dimensions, tolerances and radial internal clearances for various dimension
series of spherical plain bearing rod ends.
The dimensions and tolerances specified in this part of ISO 12240 have been selected to permit the design and
use of spherical plain bearing rod ends which incorporate radial spherical plain bearings having various sliding
material combinations.
The specified tolerance values apply for finished spherical plain bearing rod ends before any coating, plating, ring
splitting or fracturing.
Spherical plain bearing rod ends need not conform to the designs illustrated but compliance is required as
regards dimensions, tolerances and radial internal clearances specified.
NOTE — Spherical plain bearing rod ends for airframe applications and specific spherical plain baring rod ends for
direct connection to hydraulic cylinders are not covered by this part of ISO 12240.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part
of ISO 12240. At the time of publication, the editions indicated were valid. All standards are subject to revision,
and parties to agreements based on this part of ISO 12240 are encouraged to investigate the possibility of
applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of
currently valid International Standards.
ISO 582:1995, Rolling bearings – Chamfer dimensions – Maximum values.
ISO 965-1:1992, ISO general purpose metric screw threads – Tolerances – Part 1: Principles and basic data.
1)
ISO 1132-1: — , Rolling bearings – Tolerances – Part 1: Terms and definitions.
ISO 6811:1998, Spherical plain bearings – Vocabulary.
ISO 12240-1:1998,
Spherical plain bearings – Part 1: Radial spherical plain bearings.
_ _
1) To be published. (Revision of ISO 1132:1980)
1
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©
ISO
ISO 12240-4:1998(E)
3 Definitions and symbols
For the purposes of this part of ISO 12240, the definitions given in ISO 1132-1 and ISO 6811 apply. The symbols
(except those for tolerances) shown in the figures and the values given in the tables denote nominal dimensions
unless specified otherwise.
B Inner ring width
C Outer ring width
C Width of rod end eye
1
D Outside diameter of bearing outer ring
d Bore diameter of inner ring
d Outside diameter of inner ring face
1
d Outside diameter of rod end eye
2
d Rod end shank diameter
3
d Rod end shank shoulder diameter
4
d Rod end shank diameter with welding end
5
d Centre pin diameter
6
d Sphere diameter
k
G Diameter of thread
h, h , h Centre height of rod end
1 2
l , l Thread length
1 3
l , l , l Overall length of rod end
2 4 6
l Length of shoulder on rod end shank
5
l Length of the flat surface from the bearing bore centre to the shank
7
l Length of the locating pin
8
r 2) Smallest single chamfer dimension, inner ring
s min
r 2) Smallest single chamfer dimension, outer ring
1s min
V Variation of mean bore diameter
dmp
V Variation of bore diameter in a single radial plane
dp
W Width across flats
α Angle of tilt
D Deviation of a single inner ring width
Bs
D Deviation of mean bore diameter in a single plane
dmp
2) The corresponding maximum chamfer dimensions are given in table 1 of ISO 582:1995.
2
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©
ISO
ISO 12240-4:1998(E)
4 Dimension series for spherical plain bearing rod ends
A distinction is made between two basic dimension series in the case of spherical plain bearing rod ends.
Dimension series E and G have been designed so as to permit the insertion of dimension series E or G radial
spherical plain bearings into the cylindrical bore of a rod end eye.
In dimension series E and G a distinction is also made between different spherical plain bearing rod end types
according to the shank design, i.e. external or internal thread
...
IS0
INTERNATIONAL
10651-3
STANDARD
First edition
1997-01-15
Lung ventilators for medical use -
Part 3:
Particular requirements for emergency and
transport ventilators
Ven tila teurs pulmonaires 2 usage m6dical -
Partie 3: Exigences particuh&es pour ventilateurs de secours et de
transport
Reference number
IS0 10651-3:1997(E)
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ISOlO651-3:1997(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide fed-
eration of national standards bodies (IS0 member bodies). The work of
preparing International Standards is normally carried out through IS0
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
I and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(IEC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are cir-
culated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 10651-3 was prepared by Technical Committee
lSO/TC 121, Anaesthetic and respiratory equipment, Subcommittee SC 3,
Lung ventilators and related equipment.
IS0 10651 consists of the following parts, under the general title Lung
ventilators for medical use:
Part ? : Particular requirements for critical care ventilators
Part 2: Particular requirements for home care ventilators
- Part 3: Particular requirements for emergent y and transport
ventilators
Annexes M and N of this part of IS0 10651 are for information only.
0 IS0 1997
All rights reserved. Unless otherwise specified, no part of this publication may be
reproduced or utilized in any form or by any means, electronic or mechanical, including
photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case Postale 56 l CH-1211 Geneve 20 l Switzerland
Printed in Switzerland
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IS0 10651=3:1997(E)
@ IS0
Introduction
This part of IS0 10651 specifies requirements for portable lung ventilators
designed for use in emergency situations and transport. These devices
must meet the definition of a lung ventilator (to automatically augment or
provide ventilation of the patient’s lungs), but will frequently be used
outside the hospital or home by persons with different levels of training.
A rationale for the most important requirements is given in annex M.
. . .
III
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IS0 10651=3:1997(E)
INTERNATIONAL STANDARD @ IS0
Lung ventilators for medical use -
Part 3:
Particular requirements for emergency and transport ventilators
Section 1: General
1.1 Scope
NOTE - See the rationale in annex M.
This part of IS0 10651 is one of a series of International Standards based on IEC 601-l :I988 (the “General Standard”);
this type of International Standard is referred to as a “Particular Standard”. As stated in 1.3 of IEC 601-1:1988, the
requirements of this part of IS0 10651 take precedence over those of IEC 601-I :1988. Where this part of IS0 10651
specifies that a clause of IEC 601-I applies, it means that the clause applies only if the requirement is relevant to the
ventilator under consideration.
This part of IS0 10651 has common requirements with IEC 601-2-12. It also includes requirements from
IS0 10651-I :I 993.
The scope and object given in clause 1 of IEC 601-I :I 988 apply, except that 1 .I shall be replaced by the following:
This part of IS0 10651 specifies requirements for portable lung ventilators designed for use in emergency situations
and transport. Emergency and transport ventilators, called hereafter “ventilator”, are often installed in ambulances or
other types of rescue vehicles, but are often used outside this environment, where they have to be carried by the
operator or other persons. These devices will frequently be used outside the hospital or home by personnel with
different levels of training. This part of IS0 10651 is also applicable to devices permanently mounted in ambulances
or aircraft.
This part of IS0 10651 does not cover operator-powered ventilators (i.e. manual resuscitators).
1.2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part
of IS0 10651. At the time of publication, the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this part of IS0 10651 are encouraged to investigate the possibility of applying the
most recent editions of the standards indicated below. Members of IEC and IS0 maintain registers of currently
valid International Standards.
- Marking for identification of con tent.
IS0 32: 1977, Gas cylinders for medical use
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0 KG
IS0 1065%3:1997(E)
IS0 5356-l :I 996, Anaesthetic and respiratory equipment - Conical connectors - Part I: Cones and sockets.
IS0 5356-2:1987, Anaesthetic and respiratory equipment - Conical connectors - Part 2: Screw-threaded weight-
bearing connectors.
IS0 5358:1992, Anaesthetic machines for use with humans.
IS0 5359: 1989, Low-pressure flexible connecting assemblies for use with medical gas systems.
I SO 5362: 1986, Anaes the tic reservoir bags.
IS0 5367: 1991, Breathing tubes intended for use with anaesthetic apparatus and ventilators.
IS0 7767:- 1), Oxygen monitors for monitoring patient breathing mixtures - Safety requirements.
IS0 9170: I 990, Terminal units for use in medical gas pipeline systems.
IS0 9703-I : 1992, Anaesthesia and respiratory care alarm signals - Part 1: Visual alarm signals.
IS0 9703-2: 1994, Anaesthesia and respiratory care alarm signals - Part 2: Auditory alarm signals.
10651-I :I 993, Lung ventilators for medical use - Part 1: Requirements.
IS0
IEC 68-2-6: 1982, Environmental testing - Part 2: Tests - Test Fc: Vibration (sinusoidal).
IEC 68-2-29:1987, Environmental testing - Part 2: Tests - Test Eb and Guidance: Bump.
IEC 68-2-32:1990, Environmental testing - Part 2: Tests - Test Ed: Free fall.
I EC 68-2-36: 1983, Environmental testing - Part 2: Tests - Test Fdb: Random vibration wide band -
Reproducibility medium.
IEC 79-4:1975, Electrical apparatus for explosive gas atmospheres - Part 4: Method of test for ignition
temperature.
I EC 601-I : 1988, Medica/ electrical equipment - Part 1: General requirements for safety.
I EC 601-I -2: 1993, Medical electrical equipment - Part I: General requirements for safety - Electromagnetic
compatibility - Requirements and tests.
I .3 Definitions
For the purposes of this part of IS0 10651, the definitions given in IS0 10651-I :I 993, I .3, and in clause 2 of
I EC 601-I : 1988 apply, with the following exceptions.
The definition given in IEC 601-I :I 988, 2.1.5, shall be replaced by the following:
2.1.5 applied part: All parts of the ventilator intended to be connected to the patient or to the breathing
system.
NOTE -
See also the rationale in annex M.
1) To be published.
2
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IS0 10651=3:1997(E)
0 IS0
The definition given in IS0 10651-I :I 993, I .3.19, shall be replaced by the following:
1.3.19 high-pressure gas input part: Gas input port to which gas is supplied at a pressure greater than
500 kPa.
NOTE - Attention is drawn to the definitions given in IS0 4135.
The following definitions also apply:
1.3.1 emergency ventilator: Portable lung ventilator intended for emergency ventilation and resuscitation use
primarily outside hospital facilities.
1.3.2 microbial [bacterial] [particulate] filter: Device intended to reduce bacteria content and particulate matter
content of the gas stream.
1.3.3 neonatal: Pertaining to an individual weighing less than 5 kg.
1.3.4 operator-powered resuscitator: Portable non-active medical device used in emergency situation to
provide lung ventilation to individual whose breathing is inadequate.
1.3.5 paediatric: Pertaining to an individual weighing between 5 kg and 40 kg.
1.3.6 transport ventilator: Lung ventilator intended for use during transport to, between, or within hospital
facilities.
1.4 General requirements
The general requirements given in clause 3 of IEC 601-I :I 988 apply, with the following addition:
NOTE - All parts of the ventilator should be designed and manufactured to minimize health risks due to substances
leached or leaking from the device during use.
3.6 k) Applicable single-fault conditions are
short- and open-circuits of components or wiring which can increase temperature (see clause 7);
a)
b) incorrect output resulting from software error(s).
3.6 k R) An oxidant leak which is not detected by e.g. an alarm or periodic inspection shall be considered a
normal condition and not a single-fault condition.
NOTE - See also 54.1.
3.6 I) Illumination of 215 lux shall be provided. Measurement of ambient illumination shall be made from the
control panel toward the test subject. Test operator shall have vision of 1, corrected if necessary.
1.5 General requirements for tests
The requirements given in clause 4 of IEC 601-I :I 988 apply.
1.6 Classification
The classification given in clause 5 of IEC 601-I : 1988 applies.
NOTE - A ventilator may have applied parts of different types.
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0 IS0
IS0 10651=3:1997(E)
1.7 Identification, marking and documents
The requirements given in clause 6 of IEC 601-I :I 988 apply with the following additions and modifications:
6.1 e) Amend existing IEC 601-I :I 988 text to read:
The address of the manufacturer and/or authorized representative, as applicable, shall also be marked.
After 6.1 z) add the following items:
unless non-interchangeable, shall be
6.1 aa) All operator-accessible flow-direction-sensitive components,
permanently marked with a clearly legible arrow indicating the direction of flow.
6.1 ab) Any high-pressure gas input port shall be marked with the name or symbol of the intended gas in
accordance with IS0 5359, the range of supply pressures and the maximum flow requirement.
6.1 ac) If operator-accessible ports are provided, they shall be marked. The following terms shall be used at
least in the national language or English. Alternatively, symbols may be used and explained in the instructions
for use.
Driving gas input port: the words “DRIVING GAS INPUT”;
fresh gas intake port: the words “FRESH GAS INTAKE”;
emergency air intake port: the words “WARNING: EMERGENCY AIR INTAKE - DO NOT OBSTRUCT”;
manual ventilation port: the word “BAG”;
5) gas output port: the words “GAS OUTPUT”;
6) gas return port: the words “GAS RETURN”;
7) gas exhaust port: the word “EXHAUST”;
8) pressure gauge port: the words “PRESSURE GAUGE” marked with a clearly legible arrow.
6.1 ad) Each ventilator assembly shall be provided with a permanently attached checklist which summarizes
the test procedures recommended by the manufacturer which have to be performed prior to use. The use of
electronic displays, e.g. a CRT, is permitted.
6.1 ae) The ventilator shall be durably and legibly marked with the following as far as applicable:
1) any particular storage and/or handling instructions;
2) any particular instructions for use;
any particular warnings and/or precautions relevant to the immediate operation of the ventilator;
3)
the range of body mass for which use of the ventilator is specified.
4)
6.1 af) Packages containing breathing attachments intended for single-patient use shall be clearly marked with
the following:
1) a description of the contents;
2) the words “SINGLE PATIENT USE”;
Symbol No. 1051 given in IS0 7000 may additionally be used.
NOTE -
3) the word “STERILE” or “NON-STERILE”, as applicable;
4) the name and/or trademark or the manufacturer and/or supplier;
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@ IS0
IS0 10651=3:1997(E)
5) recommended methods of cleaning, disinfection and sterilization;
6) an identification reference to the type, batch or serial number;
7) the mass of the ventilator and any associated equipment (e.g. cylinder, batteries, regulators, carrying cases,
etc.);
NOTE - Some breathing attachments may contain these recommended methods in the instructions for use.
6.1 ag] Packages containing breathing attachments made of conductive materials shall be clearly r~ arked with
the word “CONDUCTIVE” or “ANTISTATIC”.
6.1 ah) Packages containing breathing attachments for single-patient use or which are disposab e shall be
clearly marked with the recommended duration of use.
6.1 ai) If gas-specific colour coding of flow controls and flexible hoses is provided, it shall be in a accordance
with IS0 32.
6.8.2 a) Add the following text:
The instructions for use shall additionally include the following:
I) Expected operating time and conditions therefor.
If the ventilator has an internal power source, a specification of the minimum operating time during
a)
which the ventilator meets the specifications under normal use as stated by the manufacturer shall be
given.
If the ventilator is pneumatically powered, the range of supply pressures shall be stated (see 10.2).
b)
If the ventilat or is provided with a reserve power supply, the functioning after a switchover to the
d
reserve powe shal be descr ibed.
r SUPPlY
2) Unless entrainment of air is prevented, recommendation for use in hazardous or explosive atmospheres,
including a warning that if the ventilator will entrain or permit the patient to inhale gas from the atmosphere,
its use in contaminated environments may be hazardous. If applicable, the manufacturer shall describe how
to prevent such entrainment or inhalation, for example, by the use of a filter.
A method of testing the following alarms prior to connection of the breathing system to the patient:
3)
high-pressure alarm;
a)
breathing circuit integrity alarm, if provided;
b)
power failure alarm;
d
d) high and low oxygen concentration alarms, if provided.
The intended use of the ventilator (e.g. adult, neonatal, range of body mass).
4)
5) If the ventilator is fitted with a gas mixing system, the manufacturer shall disclose the information
necessary for safe operation.
A recommendation that an alternative means of ventilation be available.
6)
6.8.2 d) Add the following text:
The instructions for use shall contain information about cleanliness and sterility upon delivery for parts in contact
with the patient or the respiratory gases.
6.8.3 a) Add the following text:
The requirement given applies with the following addition:
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0 IS0
IS0 10651=3:1997(E)
Unless otherwise specified, parameters shall be assumed to be expressed under ATPD (atmospheric
temperature and pressure, dry) conditions. The technical description shall additionally include the following
information, as far as applicable.
1) The following pressure information:
maximum limited pressure (Prim max.);
minimum (subatmospheric) limited pressure (prim min.);
range of values to which the maximum working pressure can be set and the means by which the
maximum is assured (e.g. pressure cycling, pressure-limiting pressure generation);
a statement whether negative pressure (subatmospheric) is available in the expiratory phase. if there is
a facility for negative pressure in the expiratory phase, the limiting pressure and generated pressure, if
applicable, shall be listed for the expiratory phase and the inspiratory phase;
range of values to which the minimum (subatmospheric) working pressure can be set and the means
by which the minimum is assured.
2) Ranges of the following parameters, if preset or settabie to values above ambient:
- cycling pressure;
- end-expiratory pressure;
- delivered concentration of oxygen.
3) Description of the means of triggering.
type, range and sensing position of all measuring a nd display devices either incorporated into
4) The purpose,
for use wit h the ventilator.
the ventilator or recommended by the manufac turer
5) Conditions under which any measured or displayed flow, volume or ventilation (t) are to be expressed (e.g.
ATPD, BTPS) and the condition and composition of gas in the corresponding sensor so that the display
complies with the accuracy requirements specified in 51.9.
For alarms used with the emergency ventilator, a statement of their type, capabilities, principle of the alarm
6)
detection and, if appropriate, suppression or delay of annunciation, estimated battery life and suitable
replacement batteries.
Size and type of battery, criteria for the need for replacement and any special precautions.
Internal volume of any breathing attachments or other components or subassemblies recommended by the
manufacturer to be placed between the patient connection port and the patient. The manufacturer of these
components shall disclose the test method on request.
The instructions for use shall include disclosure of the resistance, compliance, internal volume and other
functional characteristics of the complete ventilator breathing system, including any breathing attachment
or other components or subassemblies, e.g. humidifier or microbial filter, recommended by the
manufacturer, and identification of any operator-detachable breathing system components.
Inspiratory and expiratory resistances shall be disclosed for flowrates of 60 l/min for adult use, 30 I/min for
paediatric use and 5 I/min for neonatal use.
A statement that the operator will have to ensure (in accordance with 56.16) that these values are not
exceeded when adding attachments or other components or subassemblies to the breathing system.
IO) Disclosure of the characteristics or the microbial filter, if fitted.
11 ) Pneumatic diagram of the ventilato r and a diagram for each ventilator breathing sys tern either supplied or
recommended by th e man ufacturer
12 ) Details of any restrictions on the sequence of components within the ventilator breathing system, e.g.
where such components are flow-direction-sensitive.
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IS0 10651=3:1997(E)
0 IS0
13) Interdependence of controls.
14) Disclosure of accuracies, in terms of precisions and bias and ranges of displayed values and calibrated
controls.
NOTE - Accuracies should be expressed in the form of maximum zero error, quoted directly in appropriate units,
plus a sensitivity error, quoted e.g. as a percentage of the reading.
Rationale: A zero error, together with a sensitivity error, is needed if a variable can pass through zero or can, in any
application, cover a range such that the minimum is a small fraction of the maximum.
15) Disclosure of how the delivered tidal or minute volumes and oxygen concentration are affected by pressure
at the patient connection port, in particular the maximum deviations from the calibrated or stated settings
of these parameters at mean pressures of 0,5 kPa, I,5 kPa, 3,0 kPa and 6,0 kPa.
16) Approximate duration of the gas supply, expressed as time per litre volume of the cylinder when charged at
a typical pressure and when the ventilator is set with typical ventilator settings. The chosen pressure and
the ventilator settings shall be disclosed.
After 6.8.3 d) add the following clause:
6.8.3 e) Extreme conditions
The manufacturer shall declare how the ventilator will respond as the environmental and supply conditions are
extended outside the limits given in clause IO, changing one parameter at a time, while the other parameters
are maintained within the limits given in clause IO, as well as combinations given by the manufacturer.
Outside the environmental and supply conditions specified in clause IO but within the limits declared, the
ventilator shall not cause a safety hazard to the patient or operator.
The ventilator might continue to function but outside the specified tolerances.
NOTE -
1.8 Power input
The requirements given in clause 7 of IEC 601-I :I 988 apply.
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IS010651=3:1997(E)
Section 2: Environmental conditions
2.1 Basic safety categories
The requirements given in clause 8 of IEC 601-I :I 988 apply.
2.2 Removable protective means
The requirements given in 6.1 z) of IEC 601-I :I 988 apply.
2.3 Environmental conditions
The requirements given in clause IO of IEC 601-I :I 988 apply, with the following modifications and additions.
102.1 a) An ambient temperature range of - 18 OC to -+ 50 OC.
102.1 b) A relative humidity range of 15 % to 95 %.
10.21 c) An atmospheric pressure range of 70 kPa to l IO kPa.
10.2.2 c) The ventilator shall continue to function within the specified tolerances throughout the following
ranges of internal and external electrical power tolerances:
- a.c. voltage: - 25 % to + 15 % of nominal value;
- d.c. voltage: - 15 % to + 25 % of nominal value;
- a.c. frequency: - 5 % to + 5 % of nominal value.
NOTE - D.C. noise should be considered in the design of a ventilator intended to be powered by an external d.c. supply.
10.2.3 External pneumatic power
The ventilator shall continue to function within the specified tolerances throughout the range of pressure
variations specified by the manufacturer.
If the ventilator is intended to be connected to a medical gas supply (either a medical gas pipeline system
complying with prEN 737-3 or a pressure regulator complying with prEN 738-l), it shall operate and meet the
requirements of this part of IS0 10651 for a pneumatic power supply throughout a range of 280 kPa to 600 kPa,
and shall cause no safety hazard under the single-fault condition of the medical gas supply of up to 1 000 kPa
inlet pressure. The time-weighted average over IO s and the steady-state flowrate of each medical gas required
by the ventilator shall not exceed 60 I/min at a pressure of 280 kPa measured at the gas inlet port. The transient
flowrate of each medical gas required by the ventilator shall not exceed the equivalent of 200 I/min for 3 s.
10.3 The ventilator shall function under the extreme conditions and combinations of these as declared by the
manufacturer in 6.8.3 e).
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IS0 10651=3:1997(E)
Section 3: Protection against electric shock hazards
3.1 General
The requirements given in clause 13 of IEC 601-l :I 988 apply.
3.2 Requirements related to classification
The requirements given in clause 14 of IEC 601-I :I 988 apply.
3.3 Limitation of voltage and/or energy
The requirements given in clause 15 of IEC 601-I :I 988 apply.
3.4 Enclosures and protective covers
The requirements given in clause 16 of IEC 601-I :I 988 apply.
3.5 Separation
The requirements given in clause 17 of IEC 601-I :I 988 apply.
Protective earthing, functional earthing and potential equalization
3.6
The requirements given in clause 18 of IEC 601-I :I 988 apply.
3.7 Continuous leakage currents and patient auxiliary currents
The requirements given in clause 19 of IEC 601-I :I 988 apply with the following amendment.
19.4 Add the following text to item h).
NOTE - See also annex M in this part of IS0 10651.
The patient leakage current shall be measured from the ventilator inlet(s) and outlet(s) and other parts which are
defined as applied parts for the purpose of this part of IS0 10651. All parts of the same type shall be connected
together electrically, with the exception of parts connected to the protective earth terminal which shall be
tested separately from parts not so connected.
3.8 Dielectric strength
The requirements given in clause 20 of IEC 601-I :I 988 apply.
9
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IS0 10651=3:1997(E)
Section 4: Protection against mechanical hazards
4.1 Mechanical strength
Latlons:
The requirements given in clause 21 of IEC 601-I :I 988 apply with the following additions and modi*-’ ’
Replace the existing text with the following:
21.6
comply with the
The ventilator while functioning shall withstand the stresses caused by rough handling and shal
tests in 21.6 a) to d).
During and after the tests, the ventilator shall continue to function within the tolerances specified by the
manufacturer for normal use conditions.
21.6 a) Vibration (sinusoidal) in accordance with IEC 68-2-6 Test Fc
- Frequency range: 10 Hz-l 000 Hz
- Amplitude/acceleration: 0,35 mm/49 m-s-2
- Number of sweep cycles: four on each axis
- Sweep rate: 1 octave/min + 10 %
Reproducibility medium in accordance with IEC 68-2-36, Test Fdb
21.6 b) Random vibration (wide band) -
- ASD IO-200 Hz: O,Olg2/Hz
- ASD 200-500 Hz: 0,003g2/Hz
- Total r.m.s. acceleration: 1,7g (rms)
- Duration/axis/mounting: 30 min
21.6 c) Bump test in accordance with IEC 68-2-29, Test Eb
- Peak acceleration: 15g
- Pulse duration: 6 ms
- Number of bumps: 4 000
- Direction: vertical, with the ventilator in its normal operating positions
21.6 d) Free fall test in accordance with IEC 68-2-32, Procedure 1
- Height of fall: 0,75 m
- Number of falls: one on each of the six surfaces
4.2 Moving parts
The requirements given in clause 22 of IEC 601-I :I 988 apply.
4.3 Surfaces, corners and edges
The requirements given in clause 23 of IEC 601-I :I 988 apply.
IO
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Q IS0 IS0 10651=3:1997(E)
4.4 Stability in normal use
The requirements given in clause 24 of IEC 601-I :I 988 apply.
4.5 Expelled parts
The requirements given in clause 25 of IEC 601-I :I 988 apply.
4.6 Vibration and noise
The requirements given in clause 26 of I EC 601-I :I 988 apply.
4.7 Pneumatic and hydraulic power
The requirements given in clause 27 of IEC 601-I :I 988 apply.
4.8 Suspended masses
The requirements given in clause 28 of IEC 601-I :I 988 apply.
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IS0 10651=3:1997(E)
Protection against hazards from unwanted or excessive
Section 5:
radiation
5. II X-radiation
The requirements given in clause 29 of IEC 601-I :I 988 apply.
5.2 Alpha, beta, gamma, neutron radiation and other particle radiation
The requirements given in clause 30 of IEC 601-I :I 988 apply.
5.3 Microwave radiation
The requirements given in clause 31 of IEC 601-I :I 988 apply.
5.4 Light radiation (including lasers)
The requirements given in clause 32 of IEC 601-I :I 988 apply.
5.5 Infrared radiation
The requirements given in clause 33 of IEC 601-I :I 988 apply.
5.6 Ultraviolet radiation
The requirements given in clause 34 of IEC 601-I :I 988 apply.
5.7 Acoustical energy (inclu
...
SLOVENSKI STANDARD
SIST ISO 12240-4:2001
01-julij-2001
Kroglasti drsni zgibi - 4. del: Glava kroglastih drsnih zgibov
Spherical plain bearings -- Part 4: Spherical plain bearing rod ends
Rotules lisses -- Partie 4: Embouts à rotule
Ta slovenski standard je istoveten z: ISO 12240-4:1998
ICS:
21.100.10 Drsni ležaji Plain bearings
SIST ISO 12240-4:2001 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 12240-4:2001
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SIST ISO 12240-4:2001
INTERNATIONAL ISO
STANDARD 12240-4
First edition
1998-08-15
Spherical plain bearings —
Part 4:
Spherical plain bearing rod ends
Rotules lisses —
Partie 4: Embouts à rotule
Reference number
A
ISO 12240-4:1998(E)
---------------------- Page: 3 ----------------------
SIST ISO 12240-4:2001
ISO 12240-4:1998(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standard 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.
Draft International Standards adopted by the technical committees are circulated to the member bodies for
voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard ISO 12240-4 was prepared by Technical Committee ISO/TC 4, Rolling bearings,
Subcommittee SC 7, Spherical plain bearings.
This first edition cancels and replaces ISO 6126:1987 of which it constitutes a technical revision.
ISO 12240 consists of the following parts, under the general title Spherical plain bearings:
— Part 1: Radial spherical plain bearings
— Part 2: Angular contact radial spherical plain bearings
— Part 3: Thrust spherical plain bearings
— Part 4: Spherical plain bearing rod ends
© ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
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SIST ISO 12240-4:2001
©
INTERNATIONAL STANDARD ISO ISO 12240-4:1998(E)
Spherical plain bearings —
Part 4:
Spherical plain bearing rod ends
1 Scope
This part of ISO 12240 specifies dimensions, tolerances and radial internal clearances for various dimension
series of spherical plain bearing rod ends.
The dimensions and tolerances specified in this part of ISO 12240 have been selected to permit the design and
use of spherical plain bearing rod ends which incorporate radial spherical plain bearings having various sliding
material combinations.
The specified tolerance values apply for finished spherical plain bearing rod ends before any coating, plating, ring
splitting or fracturing.
Spherical plain bearing rod ends need not conform to the designs illustrated but compliance is required as
regards dimensions, tolerances and radial internal clearances specified.
NOTE — Spherical plain bearing rod ends for airframe applications and specific spherical plain baring rod ends for
direct connection to hydraulic cylinders are not covered by this part of ISO 12240.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part
of ISO 12240. At the time of publication, the editions indicated were valid. All standards are subject to revision,
and parties to agreements based on this part of ISO 12240 are encouraged to investigate the possibility of
applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of
currently valid International Standards.
ISO 582:1995, Rolling bearings – Chamfer dimensions – Maximum values.
ISO 965-1:1992, ISO general purpose metric screw threads – Tolerances – Part 1: Principles and basic data.
1)
ISO 1132-1: — , Rolling bearings – Tolerances – Part 1: Terms and definitions.
ISO 6811:1998, Spherical plain bearings – Vocabulary.
ISO 12240-1:1998,
Spherical plain bearings – Part 1: Radial spherical plain bearings.
_ _
1) To be published. (Revision of ISO 1132:1980)
1
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SIST ISO 12240-4:2001
©
ISO
ISO 12240-4:1998(E)
3 Definitions and symbols
For the purposes of this part of ISO 12240, the definitions given in ISO 1132-1 and ISO 6811 apply. The symbols
(except those for tolerances) shown in the figures and the values given in the tables denote nominal dimensions
unless specified otherwise.
B Inner ring width
C Outer ring width
C Width of rod end eye
1
D Outside diameter of bearing outer ring
d Bore diameter of inner ring
d Outside diameter of inner ring face
1
d Outside diameter of rod end eye
2
d Rod end shank diameter
3
d Rod end shank shoulder diameter
4
d Rod end shank diameter with welding end
5
d Centre pin diameter
6
d Sphere diameter
k
G Diameter of thread
h, h , h Centre height of rod end
1 2
l , l Thread length
1 3
l , l , l Overall length of rod end
2 4 6
l Length of shoulder on rod end shank
5
l Length of the flat surface from the bearing bore centre to the shank
7
l Length of the locating pin
8
r 2) Smallest single chamfer dimension, inner ring
s min
r 2) Smallest single chamfer dimension, outer ring
1s min
V Variation of mean bore diameter
dmp
V Variation of bore diameter in a single radial plane
dp
W Width across flats
α Angle of tilt
D Deviation of a single inner ring width
Bs
D Deviation of mean bore diameter in a single plane
dmp
2) The corresponding maximum chamfer dimensions are given in table 1 of ISO 582:1995.
2
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SIST ISO 12240-4:2001
©
ISO
ISO 12240-4:1998(E)
4 Dimension series for spherical plain bearing rod ends
A distinction is made between two basic dimension series
...
NORME ISO
INTERNATIONALE 12240-4
Première édition
1998-08-15
Rotules lisses —
Partie 4:
Embouts à rotule
Spherical plain bearings —
Part 4: Spherical plain bearing rod ends
A
Numéro de référence
ISO 12240-4:1998(F)
---------------------- Page: 1 ----------------------
ISO 12240-4:1998(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 (CEI) en ce qui
concerne la normalisation électrotechnique.
Les projets de Normes internationales adoptés par les comités techniques sont soumis aux comités
membres pour vote. Leur publication comme Normes internationales requiert l'approbation de 75 % au
moins des comités membres votants.
La Norme internationale ISO 12240-4 a été élaborée par le comité technique ISO/TC 4, Roulements,
sous-comité SC 7, Rotules lisses.
Cette première édition annule et remplace l'ISO 6126:1987, dont elle constitue une révision technique.
Rotules lisses
L'ISO 12240 comprend les parties suivantes, présentées sous le titre général :
— Partie 1: Rotules lisses radiales
— Partie 2: Rotules lisses radiales à contact oblique
— Partie 3: Rotules lisses axiales
— Partie 4: Embouts à rotule
© ISO 1998
Droits de reproduction réservés. Sauf prescription différente, 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 et les microfilms, sans l'accord écrit de l'éditeur.
Organisation internationale de normalisation
Case postale 56 • CH-1211 Genève 20 • Suisse
Internet iso@iso.ch
Imprimé en Suisse
ii
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©
NORME INTERNATIONALE ISO ISO 12240-4:1998(F)
Rotules lisses —
Partie 4:
Embouts à rotule
1 Domaine d'application
La présente partie de l'ISO 12240 prescrit les dimensions, les tolérances et les jeux internes radiaux
pour diverses séries de dimensions d'embouts à rotule.
Les dimensions et tolérances prescrites dans la présente partie de l'ISO 12240 ont été choisies pour
permettre la conception et l'utilisation d'embouts à rotule qui incorporent des rotules lisses radiales avec
un grand choix de combinaisons de matériaux de glissement.
Les valeurs prescrites pour les tolérances s'appliquent aux embouts à rotule obtenus avant tout
revêtement, plaquage, fente ou rupture de la bague.
Les embouts à rotule ne sont pas censés se conformer aux schémas donnés ici ; la conformité n'est
requise que pour les dimensions, tolérances et jeux internes radiaux prescrits.
NOTE — Les embouts à rotule pour les applications aéronautiques et les embouts à rotule directement liés à des
cylindres hydrauliques ne sont pas couverts par la présente partie de l'ISO 12240.
2 Références normatives
Les normes suivantes contiennent des dispositions qui, par suite de la référence qui en est faite,
constitue des dispositions valables pour la présente partie de l'ISO 12240. Au moment de la publication,
les éditions indiquées étaient en vigueur. Toute norme est sujette à révision et les parties prenantes des
accords fondés sur la présente partie de l'ISO 12240 sont invitées à rechercher la possibilité d'appliquer
les éditions les plus récentes des normes indiquées ci-après. Les membres de la CEI et de l'ISO
possèdent le registre des Normes internationales en vigueur à un moment donné.
ISO 582:1995, Roulements — Dimensions des arrondis — Valeurs maximales.
ISO 965-1:1980, Filetages métriques ISO pour usages généraux — Tolérances — Partie 1: Principes et
données fondamentales.
1)
ISO 1132-1:— , Roulements — Tolérances — Partie 1: Termes et définitions.
Rotules lisses — Vocabulaire
ISO 6811:1998, .
ISO 12240-1:1998, Rotules lisses — Partie 1: Rotules lisses radiales.
___________
1) À publier. (Révision de l'ISO 1132:1980)
1
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©
ISO 12240-4:1998(F) ISO
3 Définitions et symboles
Pour les besoins de la présente partie de l'ISO 12240, les définitions données dans l'ISO 1132-1 et
l'ISO 6811 s'appliquent. Les symboles (excepté ceux pour les tolérances) montrés sur les figures et les
valeurs données dans les tableaux sont les dimensions nominales, sauf spécification contraire.
B largeur de la bague intérieure
C largeur de la bague extérieure
C largeur de l'œil d'embout
1
D diamètre extérieur de la rotule
d diamètre de l'alésage de la rotule
d diamètre extérieur de la face de la bague intérieure
1
d diamètre extérieur de l'œil d'embout
2
d diamètre du filetage
3
d diamètre de la tige d'embout
4
d
diamètre de l'épaulement de la tige d'embout
5
d
diamètre de la tige d'embout avec extrémité à souder
6
d
diamètre de la goupille de centrage
7
d diamètre de la partie sphérique de la bague intérieure
k
h, h , h hauteur d'axe de l'embout
1 2
l , l longueur du filetage
1 3
l , l , l longueur totale de l'embout
2 4 6
l longueur de l'épaulement de la tige d'embout
5
l longueur de la surface lisse du centre de l'alésage de la rotule vers la tige
7
l longueur de mise en place de la goupille
8
r 2) plus petite dimension admise d'arrondi de la bague intérieure
s min
r 2) plus petite dimension admise d'arrondi de la bague extérieure
1s min
V
variation du diamètre moyen d'alésage
dmp
V
variation du diamètre d'alésage dans un plan radial isolé
dp
W
largeur des surplats
a angle de déversement
D écart d'une largeur isolée de la bague intérieure
Bs
D écart d'un diamètre moyen d'alésage dans un plan isolé
dmp
___________
2) Les valeurs maximales d'arrondi correspondantes sont données dans l'ISO 582:1995, tableau 1.
2
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©
ISO ISO 12240-4:1998(F)
4 Séries de dimensions des embouts à rotule
Pour les embouts à rotule, on distingue deux séries de dimensions fondamentales.
Les séries de dimension E et G ont été conçues de façon à permettre l'insertion de rotules lisses
...
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