ISO 11237-2:2006
(Main)Rubber hoses and hose assemblies — Wire-braid-reinforced compact types for hydraulic applications — Specification — Part 2: Water-based fluid applications
Rubber hoses and hose assemblies — Wire-braid-reinforced compact types for hydraulic applications — Specification — Part 2: Water-based fluid applications
ISO 11237-2:2006 specifies requirements for four types of compact wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 31,5. They are suitable for use with hydraulic fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from -40 °C to +60 °C. This part of ISO 11237 does not include requirements for end fittings. It is limited to the requirements for the performance of hoses and hose assemblies.
Tuyaux et flexibles en caoutchouc — Types hydrauliques compacts avec armature de fils métalliques — Spécifications — Partie 2: Applications pour fluides à base d'eau
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11237-2
First edition
2006-02-01
Rubber hoses and hose assemblies —
Wire-braid-reinforced compact types for
hydraulic applications — Specification —
Part 2:
Water-based fluid applications
Tuyaux et flexibles en caoutchouc — Types hydrauliques compacts
avec armature de fils métalliques — Spécifications —
Partie 2: Applications pour fluides à base d'eau
Reference number
ISO 11237-2:2006(E)
©
ISO 2006
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ISO 11237-2:2006(E)
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ii © ISO 2006 – All rights reserved
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ISO 11237-2:2006(E)
Contents Page
Foreword. iv
1 Scope . 1
2 Normative references . 1
3 Classification. 2
4 Materials and construction . 2
4.1 Hoses . 2
4.2 Hose assemblies. 2
5 Dimensions. 2
5.1 Hose diameters and cover thickness . 2
5.2 Hose concentricity. 4
6 Performance requirements . 4
6.1 General. 4
6.2 Hydrostatic requirements . 4
6.3 Length change requirements . 5
6.4 Minimum bend radius. 5
6.5 Resistance to impulse. 5
6.6 Leakage of hose assemblies . 6
6.7 Cold flexibility . 6
6.8 Adhesion between components. 6
6.9 Vacuum resistance . 6
6.10 Abrasion resistance. 6
6.11 Fluid resistance. 7
6.12 Ozone resistance . 7
7 Marking . 7
7.1 Hoses . 7
7.2 Hose assemblies. 7
Annex A (normative) Type and routine testing of production hoses . 8
Annex B (informative) Production acceptance testing. 9
Annex C (informative) Recommendations for lengths of supplied hoses and tolerances on
lengths of hose assemblies. 10
Bibliography . 11
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ISO 11237-2:2006(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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. 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.
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.
ISO 11237-2 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).
ISO 11237 consists of the following parts, under the general title Rubber hoses and hose assemblies —
Wire-braid-reinforced compact types for hydraulic applications — Specification:
— Part 1: Oil-based fluid applications
— Part 2: Water-based fluid applications
iv © ISO 2006 – All rights reserved
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INTERNATIONAL STANDARD ISO 11237-2:2006(E)
Rubber hoses and hose assemblies — Wire-braid-reinforced
compact types for hydraulic applications — Specification —
Part 2:
Water-based fluid applications
1 Scope
This part of ISO 11237 specifies requirements for four types of compact wire-braid-reinforced hoses and hose
assemblies of nominal size from 5 to 31,5. They are suitable for use with hydraulic fluids HFC, HFAE, HFAS
and HFB as defined in ISO 6743-4 at temperatures ranging from −40 °C to +60 °C.
This part of ISO 11237 does not include requirements for end fittings. It is limited to the requirements for the
performance of hoses and hose assemblies.
NOTE It is the responsibility of the user, in consultation with the hose manufacturer, to establish the compatibility of
the hose with the fluid to be used.
2 Normative references
The following referenced documents are indispensable for the application 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing
ISO 1817, Rubber, vulcanized — Determination of the effect of liquids
ISO 4671, Rubber and plastics hoses and hose assemblies — Methods of measurement of dimensions
ISO 4672:1997, Rubber and plastics hoses — Sub-ambient temperature flexibility tests
ISO 6605, Hydraulic fluid power — Hoses and hose assemblies — Test methods
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexing
ISO 6945, Rubber hoses — Determination of abrasion resistance of the outer cover
ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of suction resistance
ISO 7326:1991, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
ISO 8033:1991, Rubber and plastics hose — Determination of adhesion between components
ISO 11237-1, Rubber hoses and hose assemblies — Wire-braid-reinforced compact types for hydraulic
applications — Specification — Part 1: Oil-based fluid applications
© ISO 2006 – All rights reserved 1
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ISO 11237-2:2006(E)
3 Classification
Four types of hose are specified, distinguished by their construction, working pressure and minimum bend
radius. These hoses have thin covers designed for fitting assembly without the removal of the cover or a
portion of the cover.
a) Type 1SC: hoses with a single braid of wire reinforcement;
b) Type 2SC: hoses with two braids of wire reinforcement;
c) Type R16: hoses with one or two braids of wire reinforcement;
d) Type R17: 210 bar maximum working pressure hoses with one or two braids of wire reinforcement.
NOTE Types R16 and R17 are not subjected to the vacuum resistance or abrasion resistance tests.
4 Materials and construction
4.1 Hoses
Hoses shall consist of a rubber lining resistant to water-based hydraulic fluids, one or two layers of
high-tensile steel wire, and an oil- and weather-resistant rubber cover.
4.2 Hose assemblies
Hose assemblies shall be manufactured only with those hose fittings whose correct functioning has been
verified in accordance with Subclauses 6.2, 6.4 and 6.5 of this part of ISO 11237. The manufacturer's
instructions shall be followed for the preparation and fabrication of hose assemblies.
5 Dimensions
5.1 Hose diameters and cover thickness
When measured in accordance with ISO 4671, the hose diameters and the cover thickness shall conform to
the values given in Table 1.
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ISO 11237-2:2006(E)
© ISO 2006 – All rights reserved 3
Table 1 — Hose dimensions
All types Type 1SC Type 2SC Type R16 Type R17 All types
Inside diameter Diameter over wire Outside Di
...
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