Rubber hoses and hose assemblies -- Wire-braid-reinforced hydraulic types for oil-based or water-based fluids -- Specification

This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies of nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and R2AT, and the hose of nominal size 76 for type 2SN. They are suitable for use with: — 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; — water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743‑4 at temperatures ranging from −40 °C to +70 °C; — water at temperatures ranging from 0 °C to +70 °C. This document 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.

Tuyaux et flexibles en caoutchouc -- Types hydrauliques avec armature de fils métalliques tressés pour fluides à base d'huile ou à base d'eau— Spécifications

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Published
Publication Date
07-Jun-2020
Current Stage
6060 - International Standard published
Start Date
08-Jun-2020
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INTERNATIONAL ISO
STANDARD 1436
Sixth edition
2020-06
Rubber hoses and hose assemblies —
Wire-braid-reinforced hydraulic types
for oil-based or water-based fluids —
Specification
Tuyaux et flexibles en caoutchouc — Types hydrauliques avec
armature de fils métalliques tressés pour fluides à base d'huile ou à
base d'eau— Spécifications
Reference number
ISO 1436:2020(E)
ISO 2020
---------------------- Page: 1 ----------------------
ISO 1436:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 1436:2020(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

5.1 Hoses ............................................................................................................................................................................................................... 2

5.2 Hose assemblies ..................................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................. 2

6.1 Hose diameters and hose concentricity ............................................................................................................................ 2

6.2 Length ............................................................................................................................................................................................................. 4

7 Performance requirements ....................................................................................................................................................................... 4

7.1 General ........................................................................................................................................................................................................... 4

7.2 Hydrostatic requirements ............................................................................................................................................................. 4

7.3 Minimum bend radius ...................................................................................................................................................................... 5

7.4 Resistance to impulse ........................................................................................................................................................................ 5

7.4.1 Oil-based fluid impulse test .................................................................................................................................... 5

7.4.2 Water-based fluid impulse test ........................................................................................................................... 6

7.5 Leakage of hose assemblies ......................................................................................................................................................... 6

7.6 Low temperature flexibility ......................................................................................................................................................... 6

7.7 Adhesion between components ............................................................................................................................................... 6

7.8 Vacuum resistance ............................................................................................................................................................................... 7

7.9 Abrasion resistance ............................................................................................................................................................................. 7

7.10 Fluid resistance ...................................................................................................................................................................................... 7

7.10.1 General...................................................................................................................................................................................... 7

7.10.2 Oil resistance ....................................................................................................................................................................... 7

7.10.3 Water resistance .................. .................................................... ......................................................................................... 7

7.11 Ozone resistance.................................................................................................................................................................................... 8

7.12 Visual examination .............................................................................................................................................................................. 8

8 Frequency of testing .......................................................................................................................................................................................... 8

9 Marking .......................................................................................................................................................................................................................... 8

9.1 Hoses ............................................................................................................................................................................................................... 8

9.2 Hose assemblies ..................................................................................................................................................................................... 9

Annex A (normative) Test frequency for type tests and routine tests ............................................................................10

Annex B (informative) Production acceptance tests .........................................................................................................................11

Annex C (informative) Recommendations for lengths of supplied hoses and tolerances on

length of hose assemblies ........................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 1436:2020(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 45, Rubber and rubber products,

Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.

This sixth edition cancels and replaces the fifth edition (ISO 1436:2017), which has been technically

revised. The main changes compared to the previous edition are as follows:

— R1ATS and R2ATS have been updated to R1AT and R2AT, respectively, throughout the document;

— the temperature of water and water-based fluids has been increased from +60 °C to +70 °C in

the Scope;
— the definitions of Table 1, Table 2 and Table 3 have been updated;

— the previous Table 1 has been split into Table 1 and Table 2; all following tables and references have

been renumbered;
— Table 1 and Table 2 have been updated with dimensions from EN 853:1996;

— the maximum working pressure, proof pressure and minimum burst pressure have been updated to

standardize to the most common pressures, where needed, in Table 4;

— the temperature of water and water-based fluids has been changed from +60 °C to +70 °C in 7.4.2

and 7.10.3;
— “oil No. 3” has been changed to” IRM 903 oil” in 7.10.2;

— some of the marking requirements have been revised in Clause 9 (the old Clause 8, Marking)

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
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 1436:2020(E)
Rubber hoses and hose assemblies — Wire-braid-
reinforced hydraulic types for oil-based or water-based
fluids — Specification
1 Scope

This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies

of nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and

R2AT, and the hose of nominal size 76 for type 2SN.
They are suitable for use with:

— 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;

— water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging

from −40 °C to +70 °C;
— water at temperatures ranging from 0 °C to +70 °C.

This document 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 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817, Rubber, vulcanized or thermoplastic — 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
ISO 6605, Hydraulic fluid power — Test methods for hoses and hose assemblies

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 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8033:2016, Rubber and plastics hoses — Determination of adhesion between components

ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619-1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —

Part 1: Bending tests at ambient temperature
© ISO 2020 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 1436:2020(E)

ISO 10619-2:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —

Part 2: Bending tests at sub-ambient temperatures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 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/
4 Classification

Six types of hose are specified, distinguished by their construction, working pressure and oil resistance.

— Type 1ST: hoses with a single braid of wire reinforcement and having a thick cover.

— Type 2ST: hoses with two braids of wire reinforcement and having a thick cover.

— Types 1SN and R1AT: hoses with a single braid of wire reinforcement and having a thin cover.

— Types 2SN and R2AT: hoses with two braids of wire reinforcement and having a thin cover.

Types 1ST and 2ST are not recommended for new design.

NOTE Types 1SN and R1AT and types 2SN and R2AT have the same reinforcement dimensions as type 1ST

and type 2ST, respectively, except that they have thinner covers designed to assemble with fittings without

removal of the cover or a portion of the cover.
5 Materials and construction
5.1 Hoses

Hoses shall consist of a rubber lining resistant to oil- or water-based hydraulic fluids or water, 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 that conform to the requirements of this document.

Hose assemblies shall be manufactured only with those hose fittings whose correct functioning has

been verified in accordance with 7.2, 7.4, 7.5 and 7.6. The manufacturer's instructions shall be followed

for the preparation and fabrication of hose assemblies.
6 Dimensions
6.1 Hose diameters and hose concentricity

When measured in accordance with ISO 4671, the inside diameter and the diameter over reinforcement

of hoses shall conform to the values given in Table 1.

When measured in accordance with ISO 4671, the outside diameter of hoses and cover thickness (where

appropriate) shall conform to the values given in Table 2.

When measured in accordance with ISO 4671, the concentricity of hoses shall conform to the values

given in Table 3.
2 © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 1436:2020(E)
Table 1 — Inside diameters and diameter over the reinforcement of hoses
All types Types R1AT, 1SN, 1ST Types R2AT, 2SN, 2ST
Nominal Inside diameter Diameter over the reinforcement
size mm mm
min. max. min. max. min. max.
5 4,6 5,4 9,0 10,0 10,6 11,6
6,3 6,2 7,0 10,6 11,6 12,1 13,3
8 7,7 8,5 12,1 13,3 13,7 14,9
10 9,3 10,1 14,5 15,7 16,1 17,3
12,5 12,3 13,5 17,5 19,1 19,0 20,6
16 15,5 16,7 20,6 22,2 22,2 23,8
19 18,6 19,8 24,6 26,2 26,2 27,8
25 25,0 26,4 32,5 34,1 34,1 35,7
31,5 31,4 33,0 39,3 41,7 43,3 45,7
38 37,7 39,3 45,6 48,0 49,6 52,0
51 50,4 52,0 58,7 61,7 62,3 64,7
63 62,3 64,7 — — 72,2 73,8
76 75,0 77,4 — — 87,0 88,6
The hose sizes correspond to those given in ISO 1307.
This hose size is for types R2AT and 2SN only.
This hose size is for type 2SN only.
Table 2 — Outside diameters and cover thickness of hoses
Type 1ST Types 1SN, R1AT Type 2ST Types 2SN, R2AT
Outside Outside Cover Outside Outside Cover
Nominal
diameter diameter thickness diameter diameter thickness
size
mm mm mm mm mm mm
min. max. max. min. max. min. max. max. min. max.
5 11,9 13,5 12,5 0,8 1,5 15,1
...

FINAL
INTERNATIONAL ISO/FDIS
DRAFT
STANDARD 1436
ISO/TC 45/SC 1
Rubber hoses and hose assemblies —
Secretariat: DIN
Wire-braid-reinforced hydraulic types
Voting begins on:
2020­03­13 for oil-based or water-based fluids —
Specification
Voting terminates on:
2020­05­08
Tuyaux et flexibles en caoutchouc — Types hydrauliques avec
armature de fils métalliques tressés pour fluides à base d'huile ou à
base d'eau— Spécifications
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 SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/FDIS 1436:2020(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. ISO 2020
---------------------- Page: 1 ----------------------
ISO/FDIS 1436:2020(E)
COPYRIGHT PROTECTED DOCUMENT
© 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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH­1214 Vernier, Geneva
Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii © ISO 2020 – All rights reserved
---------------------- Page: 2 ----------------------
ISO/FDIS 1436:2020(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

5.1 Hoses ............................................................................................................................................................................................................... 2

5.2 Hose assemblies ..................................................................................................................................................................................... 2

6 Dimensions ................................................................................................................................................................................................................. 2

6.1 Hose diameters and hose concentricity ............................................................................................................................ 2

6.2 Length ............................................................................................................................................................................................................. 4

7 Performance requirements ....................................................................................................................................................................... 4

7.1 General ........................................................................................................................................................................................................... 4

7.2 Hydrostatic requirements ............................................................................................................................................................. 4

7.3 Minimum bend radius ...................................................................................................................................................................... 5

7.4 Resistance to impulse ........................................................................................................................................................................ 5

7.4.1 Oil-based fluid impulse test .................................................................................................................................... 5

7.4.2 Water-based fluid impulse test ........................................................................................................................... 6

7.5 Leakage of hose assemblies ......................................................................................................................................................... 6

7.6 Low temperature flexibility ......................................................................................................................................................... 6

7.7 Adhesion between components ............................................................................................................................................... 6

7.8 Vacuum resistance ............................................................................................................................................................................... 7

7.9 Abrasion resistance ............................................................................................................................................................................. 7

7.10 Fluid resistance ...................................................................................................................................................................................... 7

7.10.1 General...................................................................................................................................................................................... 7

7.10.2 Oil resistance ....................................................................................................................................................................... 7

7.10.3 Water resistance .................. .................................................... ......................................................................................... 7

7.11 Ozone resistance.................................................................................................................................................................................... 8

7.12 Visual examination .............................................................................................................................................................................. 8

8 Frequency of testing .......................................................................................................................................................................................... 8

9 Marking .......................................................................................................................................................................................................................... 8

9.1 Hoses ............................................................................................................................................................................................................... 8

9.2 Hose assemblies ..................................................................................................................................................................................... 9

Annex A (normative) Test frequency for type tests and routine tests ............................................................................10

Annex B (informative) Production acceptance tests .........................................................................................................................11

Annex C (informative) Recommendations for lengths of supplied hoses and tolerances on

length of hose assemblies ........................................................................................................................................................................12

Bibliography .............................................................................................................................................................................................................................13

© ISO 2020 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO/FDIS 1436:2020(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 non­governmental, 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 45, Rubber and rubber products,

Subcommittee SC 1, Rubber and plastics hoses and hose assemblies.

This sixth edition cancels and replaces the fifth edition (ISO 1436:2017), which has been technically

revised. The main changes compared to the previous edition are as follows:

— R1ATS and R2ATS have been updated to R1AT and R2AT, respectively, throughout the document;

— the temperature of water and water-based fluids has been increased from +60 °C to +70 °C in

the Scope;
— the definitions of Table 1, Table 2 and Table 3 have been updated;

— the previous Table 1 has been split into Table 1 and Table 2; all following tables and references have

been renumbered;
— Table 1 and Table 2 have been updated with dimensions from EN 853:1996;

— the maximum working pressure, proof pressure and minimum burst pressure have been updated to

standardize to the most common pressures, where needed, in Table 4;

— the temperature of water and water-based fluids has been changed from +60 °C to +70 °C in 7.4.2

and 7.10.3;
— “oil No. 3” has been changed to” IRM 903 oil” in 7.10.2;

— some of the marking requirements have been revised in Clause 9 (the old Clause 8, Marking);

— the Bibliography has been removed since it is no longer required.

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
---------------------- Page: 4 ----------------------
FINAL DRAFT INTERNATIONAL STANDARD ISO/FDIS 1436:2020(E)
Rubber hoses and hose assemblies — Wire-braid-
reinforced hydraulic types for oil-based or water-based
fluids — Specification
1 Scope

This document specifies requirements for six types of wire-braid-reinforced hoses and hose assemblies

of nominal size from 5 to 51. This document also specifies the hose of nominal size 63 for types 2SN and

R2AT, and the hose of nominal size 76 for type 2SN.
They are suitable for use with:

— 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;

— water-based fluids HFC, HFAE, HFAS and HFB as defined in ISO 6743-4 at temperatures ranging

from −40 °C to +70 °C;
— water at temperatures ranging from 0 °C to +70 °C.

This document 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 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 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing

ISO 1817, Rubber, vulcanized or thermoplastic — 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
ISO 6605, Hydraulic fluid power — Test methods for hoses and hose assemblies

ISO 6743­4, 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 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions

ISO 8033:2016, Rubber and plastics hoses — Determination of adhesion between components

ISO 8330, Rubber and plastics hoses and hose assemblies — Vocabulary

ISO 10619­1:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —

Part 1: Bending tests at ambient temperature
© ISO 2020 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO/FDIS 1436:2020(E)

ISO 10619­2:2017, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —

Part 2: Bending tests at sub-ambient temperatures
3 Terms and definitions

For the purposes of this document, the terms and definitions given in ISO 8330 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/
4 Classification

Six types of hose are specified, distinguished by their construction, working pressure and oil resistance.

— Type 1ST: hoses with a single braid of wire reinforcement and having a thick cover.

— Type 2ST: hoses with two braids of wire reinforcement and having a thick cover.

— Types 1SN and R1AT: hoses with a single braid of wire reinforcement and having a thin cover.

— Types 2SN and R2AT: hoses with two braids of wire reinforcement and having a thin cover.

Types 1ST and 2ST are not recommended for new design.

NOTE 1 Types 1SN and R1AT and types 2SN and R2AT have the same reinforcement dimensions as type 1ST

and type 2ST, respectively, except that they have thinner covers designed to assemble with fittings without

removal of the cover or a portion of the cover.
5 Materials and construction
5.1 Hoses

Hoses shall consist of a rubber lining resistant to oil- or water-based hydraulic fluids or water, 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 that conform to the requirements of this document.

Hose assemblies shall be manufactured only with those hose fittings whose correct functioning has

been verified in accordance with 7.2, 7.4, 7.5 and 7.6. The manufacturer's instructions shall be followed

for the preparation and fabrication of hose assemblies.
6 Dimensions
6.1 Hose diameters and hose concentricity

When measured in accordance with ISO 4671, the inside diameter and the diameter over reinforcement

of hoses shall conform to the values given in Table 1.

When measured in accordance with ISO 4671, the outside diameter of hoses and cover thickness (where

appropriate) shall conform to the values given in Table 2.

When measured in accordance with ISO 4671, the concentricity of hoses shall conform to the values

given in Table 3.
2 © ISO 2020 – All rights reserved
---------------------- Page: 6 ----------------------
ISO/FDIS 1436:2020(E)
Table 1 — Inside diameters and diameter over the reinforcement of hoses
All Types Types R1AT, 1SN, 1ST Types R2AT, 2SN, 2ST
Nominal Inside diameter Diameter over the reinforcement
size mm mm
min. max. min. max. min. max.
5 4,6 5,4 9,0 10,0 10,6 11,6
6,3 6,2 7,0 10,6 11,6 12,1 13,3
8 7,7 8,5 12,1 13,3 13,7 14,9
10 9,3 10,1 14,5 15,7 16,1 17,3
12,5 12,3 13,5 17,5 19,1 19,0 20,6
16 15,5 16,7 20,6 22,2 22,2 23,8
19 18,6 19,8 24,6 26,2 26,2 27,8
25 25,0 26,4 32,5 34,1 34,1 35,7
31,5 31,4 33,0 39,3 41,7 43,3 45,7
38 37,7 39,3 45,6 48,0 49,6 52,0
51 50,4 52,0 58,7 61,7 62,3 64,7
63 62,3 64,7 — — 72,2 73,8
76 75,0 77,4 — — 87,0 88,6
The hose sizes correspond to those given in ISO 1307.
This hose size is for types R2AT and 2
...

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