ISO 11237:2010
(Main)Rubber hoses and hose assemblies — Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
Rubber hoses and hose assemblies — Compact wire-braid-reinforced hydraulic types for oil-based or water-based fluids — Specification
ISO 11237:2010 specifies requirements for five types of compact, wire-braid-reinforced hose and hose assembly of nominal size from 5 to 31,5. They are suitable for use with water-based hydraulic fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743‑4 at temperatures ranging from -40 °C to +60 °C and oil-based hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743‑4 at temperatures ranging from -40 °C to +100 °C. This International Standard does not include requirements for end fittings. It is limited to requirements for hoses and hose assemblies.
Tuyaux et flexibles en caoutchouc — Types hydrauliques compacts avec armature de fils métalliques tressés pour fluides à base d'huile ou à base d'eau — Spécifications
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 11237
First edition
2010-04-15
Rubber hoses and hose assemblies —
Compact wire-braid-reinforced hydraulic
types for oil-based or water-based
fluids — Specification
Tuyaux et flexibles en caoutchouc — Types hydrauliques compacts
avec armature de fils métalliques tressés pour fluides à base d'huile ou
à base d'eau — Spécifications
Reference number
ISO 11237:2010(E)
©
ISO 2010
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ISO 11237:2010(E)
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ii © ISO 2010 – All rights reserved
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ISO 11237:2010(E)
Contents Page
Foreword .iv
1 Scope.1
2 Normative references.1
3 Terms and definitions .2
4 Classification .2
5 Materials and construction.2
6 Dimensions .2
7 Performance requirements.4
8 Marking.8
Annex A (normative) Type and routine testing of production hoses.10
Annex B (informative) Periodic testing of production hoses .11
Annex C (informative) Recommendations for lengths of supplied hoses and length tolerances for
hose assemblies.12
© ISO 2010 – All rights reserved iii
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ISO 11237:2010(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 was prepared by Technical Committee ISO/TC 45, Rubber and rubber products, Subcommittee
SC 1, Hoses (rubber and plastics).
This first edition cancels and replaces ISO 11237-1:2004 and ISO 11237-2:2006, which have been technically
revised and combined in a single document. The main changes are the use of the megapascal as the
preferred unit of pressure, the removal of the abrasion test requirement and the replacement of ISO 4397 by
ISO 1307 in Clause 2 and Table 1.
iv © ISO 2010 – All rights reserved
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INTERNATIONAL STANDARD ISO 11237:2010(E)
Rubber hoses and hose assemblies — Compact wire-braid-
reinforced hydraulic types for oil-based or water-based fluids —
Specification
1 Scope
This International Standard specifies requirements for five types of compact, wire-braid-reinforced hose and
hose assembly of nominal size from 5 to 31,5. They are suitable for use with water-based hydraulic fluids HFC,
HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging from −40 °C to +60 °C and oil-based
hydraulic fluids HH, HL, HM, HR and HV as defined in ISO 6743-4 at temperatures ranging from −40 °C to
+100 °C.
This International Standard does not include requirements for end fittings. It is limited to requirements for
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 1307, Rubber and plastics hoses — Hose sizes, minimum and maximum inside diameters, and
tolerances on cut-to-length hoses
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 the dimensions of
hoses and the lengths of hose assemblies
1)
ISO 4672:1997, Rubber and plastics hoses — Sub-ambient temperature flexibility tests
ISO 6605, Hydraulic fluid power — Hoses and hose assemblies — Test methods
ISO 6743-4, Lubricants, industrial oils and related products (class L) — Classification — Part 4: Family H
(Hydraulic systems)
ISO 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without flexing
ISO 7233, Rubber and plastics hoses and hose assemblies — Determination of resistance to vacuum
ISO 7326:2006, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
1) Under revision as ISO 10619-2.
© ISO 2010 – All rights reserved 1
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ISO 11237:2010(E)
ISO 8033:2006, Rubber and plastics hoses — Determination of adhesion between components
ISO 8330, Rubber and plastics hose and hose assemblies — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 8330 apply.
4 Classification
Five types of hose are specified, distinguished by their construction, working pressure and minimum bend
radius. These hoses have thin covers designed to permit 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 R16S: hoses with one or two braids of wire reinforcement.
d) Type R17: 21 MPa (210 bar) constant pressure hoses with one or two braids of wire reinforcement.
e) Type R19: 28 MPa (280 bar) constant pressure hoses with one or two braids of wire reinforcement.
NOTE Types R16S, R17 and R19 are not subjected to the vacuum resistance tests.
5 Materials and construction
5.1 Hoses
Hoses shall consist of a rubber lining resistant to oil- or water-based hydraulic fluids, one or two layers of high-
tensile steel wire and a weather- and oil-resistant rubber cover.
5.2 Hose assemblies
Hose assemblies shall be manufactured using hoses conforming to the requirements of this International
Standard.
Hose assemblies shall be manufactured only with those hose fittings whose correct functioning has been
verified in accordance with Subclauses 7.2, 7.3, 7.5, 7.6 and 7.7 of this International Standard. The
manufacturer's instructions shall be followed for the preparation and fabrication of hose assemblies.
6 Dimensions
6.1 Hose diameters and cover thickness
When measured in accordance with ISO 4671, the hose diameters shall conform to the values given in
Table 1 and the cover thickness to 6.3.
2 © ISO 2010 – All rights reserved
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ISO 11237:2010(E)
Table 1 — Dimensions of hoses
All types Type 1SC Type 2SC Type R16S Type R17 Type R19
Nominal
a
size
mm mm mm mm mm mm mm mm mm mm mm
min. max. min. max. max. min. max. max. max. max. max. max. max. max.
5 4,6 5,4 N/A N/A N/A N/A N/A N/A N/A N/A 10,1 11,6 10,8 12,7
6,3 6,1 6,9 9,6 10,8 13,5 10,6 11,7 14,2 12,3 14,5 11,0 13,2 12,4 14,4
8 7,7 8,5 10,9 12,1 14,5 12,1 13,3 16,0 13,3 15,8 13,0 15,0 14,2 16,3
10 9,3 10,1 12,7 14,5 16,9 14,4 15,6 18,3 15,9 18,8 15,0 17,0 16,0 18,0
12,5 12,3 13,5 15,9 18,1 20,4 17,5 19,1 21,5 19,1 22,0 18,8 21,1 20,4 22,6
16 15,5 16,7 19,8 21,0 23,0 20,5 22,3 24,7 22,5 25,4 23,6 25,9 25,9 27,5
19 18,6 19,8 23,2 24,4 26,7 24,6 26,4 28,6 26,3 29,0 27,7 30,3 29,7 32,5
25 25,0 26,4 30,7 31,9 34,9 32,5 34,3 36,6 34,0 36,6 35,6 38,6 N/A N/A
31,5 31,4 33,0 37,8 39,0 42,2 39,3 41,7 44,3 41,9 44,3 N/A N/A N/A N/A
NOTE N/A = Not available.
a
Nominal sizes are in accordance with ISO 1307.
6.2 Concentricity
When measured in accordance with ISO 4671, the concentricity of hoses shall conform to the values given in
Table 2.
Table 2 — Concentricity of hoses (all types)
Maximum variation in wall thickness
mm
Nominal size
Between inside diameter and Between inside diameter and
outside diameter reinforcement diameter
Up to and including 6,3 0,8 0,5
Over 6,3 and up to and
1,0 0,6
including 19
Over 19 1,3 0,8
6.3 Hose cover thickness
When measured in accordance with ISO 4671, the cover thickness of all types of hose shall lie in the range
0,8 mm to 1,5 mm.
© ISO 2010 – All rights reserved 3
Inside diameter
Diameter over
wire
Outside diameter
of hose
Diameter over
wire
Outside diameter
of hose
Diameter over
wire
Outside diameter
of hose
Diameter over
wire
Outside diameter
of hose
Diameter over
wire
Outside diameter
of hose
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ISO 11237:2010(E)
7 Performance requirements
7.1 General
The requirements for type and routine testing are given in Annex A and recommendations for periodic testing
in Annex B.
7.2 Change in length requirements
When determined in accordance with ISO 1402 or ISO 6605, the change in length of hoses at the maximum
working pressure shall not exceed +2 % to −4 %. Maximum working pressure values are given in Table 3.
Table 3 — Maximum working pressure
Type
1SC 2SC/R16S R17 R19
Nominal
size
Maximum working pressure
MPa bar MPa bar MPa bar MPa bar
5 N/A N/A 21 210 28 280
6,3 22,5 225 40 400 21 210 28 280
8 21,5 215 35 350 21 210 28 280
10 18 180 33 330 21 210 28 280
12,5 16 160 27,5 275 21 210 28 280
16 13 130 25 250 21 210 28 280
19 10,5 105 21,5 215 21 210 28 280
25 8,8 88 16,5 165 21 210 N/A
31,5 6,3 63 12,5 125 N/A N/A
NOTE 1 MPa = 10 bar; N/A = Not available.
Table 4 — Proof pressure
Type
1SC 2SC/R16S R17 R19
Nominal
size
Proof pressure
MPa bar MPa bar MPa bar MPa bar
5 N/A N/A 42 420 56 560
6,3 45 450 80 800 42 420 56 560
8 43 430 70 700 42 420 56 560
10 36 360 66 660 42 420 56 560
12,5 32 320 55 550 42 420 56 560
1
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