EN 856:2015

SLOVENSKI STANDARD
01-junij-2015
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SIST EN 856:2000
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Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic
type - Specification
Gummischläuche und -schlauchleitungen - Hydraulikschläuche mit Drahtspiraleinlage -
Spezifikation
Tuyaux et flexibles en caoutchouc - Type hydraulique avec armature hélicoidale de fils
métalliques - Spécification
Ta slovenski standard je istoveten z: EN 856:2015
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 856
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2015
ICS 23.100.40 Supersedes EN 856:1996
English Version
Rubber hoses and hose assemblies - Rubber-covered spiral wire
reinforced hydraulic type - Specification
Tuyaux et flexibles en caoutchouc - Type hydraulique avec Gummischläuche und -schlauchleitungen -
armature hélicoïdale de fils métalliques - Spécification Hydraulikschläuche mit Drahtspiraleinlage - Spezifikation
This European Standard was approved by CEN on 31 January 2015.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 856:2015 E
worldwide for CEN national Members.

Contents Page
Foreword .3
1 Scope .4
2 Normative references .4
3 Types of hose .5
4 Materials and construction .5
4.1 Hoses .5
4.2 Hose assemblies .5
5 Dimensions .5
5.1 Diameters and concentricity .5
5.2 Length .7
5.2.1 Hoses .7
5.2.2 Hose assemblies .7
6 Requirements .8
6.1 Hydrostatic requirements .8
6.2 Minimum bend radius .8
6.3 Impulse test requirements .9
6.4 Leakage of hose assemblies .9
6.5 Cold flexibility .9
6.6 Adhesion between components .9
6.7 Abrasion resistance .9
6.8 Fluid resistance.9
6.8.1 Test pieces .9
6.8.2 Oil resistance . 10
6.8.3 Water based fluid resistance . 10
6.8.4 Water resistance . 10
6.9 Ozone resistance . 10
7 Designation . 10
8 Marking . 10
8.1 Hoses . 10
8.2 Hose assemblies . 11
Annex A (normative) Procedure for the measurement of abrasion . 12
A.1 Apparatus . 12
A.2 Method . 13
A.3 Test pieces . 13
A.4 Condition of test pieces . 13
A.5 Procedure . 14
A.6 Expression of results . 14
A.7 Test report . 14
Annex B (normative) Type and routine testing of production hoses . 16
Annex C (informative) Production acceptance testing . 17

Foreword
This document (EN 856:2015) has been prepared by Technical Committee CEN/TC 218 “Rubber and plastics
hoses and hose assemblies”, the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by October 2015 and conflicting national standards shall be withdrawn at
the latest by October 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 856:1996.
In comparison with EN 856:1996, the following significant changes have been made:
— updated normative references;
— tolerances for inside diameter in Table 1;
— added Annex A;
— added Annex B;
— added Annex C.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

1 Scope
This European Standard specifies requirements for four types of rubber-covered spiral wire reinforced
hydraulic hoses and hose assemblies of nominal bore from 6 to 51: Types 4SP, 4SH, R12 and R13. They are
all suitable for use with:
— hydraulic fluids in accordance with ISO 6743-4 with the exception of HFD R, HFD S and HFD T at
temperatures ranging from −40 °C to +100 °C for types 4SP and 4SH and −40 °C to +120 °C for types
R12 and R13;
— water based fluids at temperatures ranging from −40 °C to 70 °C;
— water fluids at temperatures ranging from 0 °C to 70 °C.
This European Standard does not include requirements for end fittings. It is limited to the performance of
hoses and hose assemblies.
NOTE 1 The hoses are not suitable for use with castor oil based nor ester based fluids.
NOTE 2 Hoses and hose assemblies are not be operated outside the limits of this standard.
NOTE 3 Requirements for hydraulic hoses for underground mining are standardised in a separate standard.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN ISO 1302, Geometrical Product Specifications (GPS) - Indication of surface texture in technical product
documentation (ISO 1302)
EN ISO 1402:2009, Rubber and plastics hoses and hose assemblies - Hydrostatic testing (ISO 1402:2009)
EN ISO 4671, Rubber and plastics hoses and hose assemblies - Methods of measurement of the dimensions
of hoses and the lengths of hose assemblies (ISO 4671)
EN ISO 6743-4, Lubricants, industrial oils and related products (class L) - Classification - Part 4: Family H
(Hydraulic systems) (ISO 6743-4)
EN ISO 6803, Rubber or plastics hoses and hose assemblies - Hydraulic-pressure impulse test without flexing
(ISO 6803)
EN ISO 7326, Rubber and plastics hoses - Assessment of ozone resistance under static conditions
(ISO 7326)
EN ISO 8033:2006, Rubber and plastics hoses - Determination of adhesion between components
(ISO 8033:2006)
EN ISO 10619-2, Rubber and plastics hoses and tubing - Measurement of flexibility and stiffness - Part 2:
Bending tests at sub-ambient temperatures (ISO 10619-2)
ISO 1817:2005, Rubber, vulcanized - Determination of the effect of liquids
ISO 23529, Rubber - General procedures for preparing and conditioning test pieces for physical test methods
3 Types of hose
Four types of hose are specified:
1) Type 4SP – a 4-steel wire spiral medium pressure hose;
2) Type 4SH – a 4-steel wire spiral extra high pressure hose;
3) Type R12 – a 4 steel wire spiral heavy duty high temperature hose – medium pressure rating;
4) Type R13 – a multiple steel wire spiral heavy duty high temperature hose – high pressure rating.
4 Materials and construction
4.1 Hoses
Hoses shall consist of an oil and water resistant synthetic rubber lining, spiral plies of steel wire wrapped in
alternating directions, and an oil and weather resistant synthetic rubber cover. Each spiral wire ply shall be
separated by an insulating layer of synthetic rubber.
4.2 Hose assemblies
Hose assemblies shall only be manufactured with those hose fittings whose functionality has been verified in
accordance with subclauses 6.1, 6.3, 6.4 and 6.5 of this European Standard.
5 Dimensions
5.1 Diameters and concentricity
When measured in accordance with EN ISO 4671, the diameters of the hoses shall conform to the values
given in Table 1.
Table 1 — Diameters of hoses
Dimensions in millimetres, except nominal bore
Nominal Inside diameter
bore
Type 4SP Type 4SH Type R12 Type R13
min. max. min. max. min. max. min. max.
6 6,2 7,0 - - - - - -
10 9,4 10,1 - - 9,3 10,1 - -
12 12,6 13,5 - - 12,3 13,5 - -
16 15,8 16,7 - - 15,5 16,7 - -
19 18,8 19,8 19,1 19,8 18,6 19,8 18,6 19,8
25 25,4 26,4 25,5 26,4 25,0 26,4 25,0 26,4
31 31,8 33,0 32,0 33,0 31,4 33,0 31,4 33,0
38 38,0 39,3 38,2 39,3 37,7 39,3 37,7 39,3
51 50,6 52,0 50,6 52,0 50,4 52,0 50,4 52,0
When measured in
...