oSIST prEN 856:2024

Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic type - Specification

This document 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, R13 and R15. They are suitable for use with:
-   hydraulic fluids covered in 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 R13 and R15;
-   water based fluids at temperatures ranging from −40 °C to 70 °C;
-   water fluids at temperatures ranging from 0 °C to 70 °C.
The hoses are not suitable for use with castor oil based nor ester-based fluids.
This document does not include requirements for end fittings. It is limited to the performance of hoses and hose assemblies.
NOTE   Requirements for hydraulic hoses for underground mining are covered in a different document.

Gummischläuche und -schlauchleitungen - Hydraulikschläuche mit Drahtspiraleinlage - Spezifikation

Dieses Dokument legt Anforderungen für vier Typen von Schläuchen und Schlauchleitungen mit Drahtspiraleinlagen vom Nenndurchmesser 6 bis 51 fest: Typen 4SP, 4SH, R13 und R15. Sie sind geeignet zur Verwendung mit:
-   Hydraulikflüssigkeiten nach ISO 6743-4 mit Ausnahme von HFD R, HFD S und HFD T in einem Temperaturbereich von −40 °C bis +100 °C bei den Typen 4SP und 4SH und −40 °C bis +120 °C bei den Typen R13 und R15;
-   wässrigen Flüssigkeiten in einem Temperaturbereich von −40 °C bis +70 °C;
-   Wasser in einem Temperaturbereich von 0 °C bis +70 °C.
Die Schläuche sind für Flüssigkeiten auf Rizinusöl- oder Esterbasis nicht geeignet.
Dieses Dokument enthält keine Anforderungen an die Endarmaturen. Es beschränkt sich auf die Leistungsfähigkeit der Schläuche und Schlauchleitungen.
ANMERKUNG   Anforderungen an Hydraulikschläuche für den untertägigen Bergbau werden in einem anderen Dokument behandelt.

Tuyaux et flexibles en caoutchouc - Type hydraulique avec armature hélicoïdale de fils métallique recouverts de caoutchouc - Spécification

Le présent document spécifie les exigences pour quatre types de tuyaux et flexibles revêtus de caoutchouc, renforcés par des fils métalliques en spirale, d’alésage nominal de 6 à 51 : Types 4SP, 4SH, R13 et R15. Ils sont destinés à être utilisés avec :
-   les fluides hydrauliques couverts par l'ISO 6743-4, à l'exception des HFD R, HFD S et HFD T, dans une plage de températures de −40 °C à +100 °C pour les types 4SP et 4SH, et de −40 °C à +120 °C pour les types R13 et R15;
-   les fluides aqueux dans une plage de températures de −40 °C à +70 °C ;
-   l'eau dans une plage de températures de 0 °C à +70 °C.
Les tuyaux ne conviennent pas pour des utilisations avec des fluides à base d'huile de ricin ou d'ester.
Le présent document ne contient pas d'exigences relatives aux extrémités de raccordement. Il se limite aux performances des tuyaux et assemblages flexibles.
NOTE    Les exigences pour les tuyaux hydrauliques pour mines souterraines font l'objet d'un autre document.

Gumene cevi in cevni priključki - S spiralnim gumiranim jeklenim kordom ojačene hidravlične cevi - Specifikacija

General Information

• Status: Not Published
• Public Enquiry End Date: 30-Dec-2024
• ICS: 23.040.70 - Hoses and hose assemblies
• ICS: 23.100.40 - Piping and couplings
• Technical Committee: IPMA - Polimer materials and products
• Current Stage: 4020 - Public enquire (PE) (Adopted Project)
• Start Date: 04-Nov-2024
• Due Date: 24-Mar-2025
• Ref Project: prEN 856 - Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic type - Specification

Relations

• Revised: SIST EN 856:2015+AC:2019 - Rubber hoses and hose assemblies - Rubber-covered spiral wire reinforced hydraulic type - Specification
• Effective Date: 19-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2024
Gumene cevi in cevni priključki - S spiralnim gumiranim jeklenim kordom ojačene
hidravlične cevi - Specifikacija
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 hélicoïdale de fils
métallique recouverts de caoutchouc - Spécification
Ta slovenski standard je istoveten z: prEN 856
ICS:
23.040.70 Gumene cevi in armature Hoses and hose assemblies
23.100.40 Cevna napeljava in sklopke Piping and couplings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2024
ICS 23.100.40 Will supersede EN 856:2015+AC:2019
English Version
Rubber hoses and hose assemblies - Rubber-covered spiral
wire reinforced hydraulic type - Specification
Tuyaux et flexibles en caoutchouc - Type hydraulique Gummischläuche und -schlauchleitungen -
avec armature hélicoïdale de fils métallique recouverts Hydraulikschläuche mit Drahtspiraleinlage -
de caoutchouc - Spécification Spezifikation
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 218.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
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 supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 856:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Types of hose . 5
5 Materials and construction . 5
5.1 Hoses . 5
5.2 Hose assemblies . 5
6 Dimensions. 5
6.1 Diameters and concentricity . 5
6.2 Length. 8
6.2.1 Hoses . 8
6.2.2 Hose assemblies . 8
7 Requirements . 9
7.1 Hydrostatic requirements . 9
7.2 Minimum bend radius . 10
7.3 Impulse test requirements . 10
7.4 Leakage of hose assemblies . 10
7.5 Cold flexibility . 11
7.6 Adhesion between components . 11
7.7 Abrasion resistance . 11
7.8 Fluid resistance . 11
7.8.1 Test pieces . 11
7.8.2 Oil resistance . 11
7.8.3 Water based fluid resistance . 11
7.8.4 Water resistance . 12
7.9 Ozone resistance . 12
8 Designation . 12
9 Frequency of testing . 12
10 Marking . 12
10.1 Hoses . 12
10.2 Hose assemblies . 13
Annex A (normative) Test frequency for type tests and routine tests . 14
Bibliography . 16

European foreword
This document (prEN 856:2024) 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 document is currently submitted to the CEN Enquiry.
This document will supersede EN 854:2015+AC:2019.
This document includes the following significant technical changes with respect to
EN 856:2015+AC:2019:
— EN 853, 854, 856 and 857 have been aligned;
— updated normative references;
— Table 7 added;
— Annex A deleted;
— Annex C deleted.
1 Scope
This document 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, R13 and R15. They are suitable
for use with:
— hydraulic fluids covered in 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 R13 and R15;
— water based fluids at temperatures ranging from −40 °C to 70 °C;
— water fluids at temperatures ranging from 0 °C to 70 °C.
The hoses are not suitable for use with castor oil based nor ester-based fluids.
This document does not include requirements for end fittings. It is limited to the performance of hoses
and hose assemblies.
NOTE Requirements for hydraulic hoses for underground mining are covered in a different document.
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.
EN ISO 1402, Rubber and plastics hoses and hose assemblies — Hydrostatic testing (ISO 1402)
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 6803, Rubber or plastics hoses and hose assemblies — Hydraulic-pressure impulse test without
flexing (ISO 6803)
EN ISO 7326:2016, Rubber and plastics hoses — Assessment of ozone resistance under static conditions
(ISO 7326:2016)
EN ISO 8033, Rubber and plastics hoses — Determination of adhesion between components (ISO 8033)
EN ISO 10619-2:2021, Rubber and plastics hoses and tubing — Measurement of flexibility and stiffness —
Part 2: Bending tests at sub-ambient temperatures (ISO 10619-2:2021)
ISO 1817:2024, Rubber, vulcanized or thermoplastic — Determination of the effect of liquids
ISO/TS 20444, Rubber and plastics hoses — Determination of abrasion resistance of the outer cover
3 Terms and definitions
No terms and definitions are listed in this document.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/

Under preparation. Stage at the time of preparation: ISO/DTS 20444
— ISO Online browsing platform: available at https://www.iso.org/obp
4 Types of hose
Four types of hose are specified, distinguished by their construction and maximum working pressure:
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 R13 – a multiple steel wire spiral heavy duty high temperature hose – high pressure rating
4) Type R15 – a multiple steel wire spiral heavy duty high temperature hose – high pressure rating.
Hoses and hose assemblies are not be operated outside the limits of this document.
5 Materials and construction
5.1 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.
5.2 Hose assemblies
Hose assemblies shall only be manufactured with those hose fittings whose functionality as a defined
hose and fitting combination has been verified in accordance with 7.1, 7.3, 7.4 and 7.5 of this document.
The manufacturer’s instructions shall be followed for the preparation and fabrication of hose assemblies.
6 Dimensions
6.1 Diameters and concentricity
The diameters of the hoses shall be measured in accordance with EN ISO 4671 and as such shall conform
to the values in Table 1.
Table 1 — Diameters of hoses
Dimensions in millimetres, except nominal bore
Inside diameter
Nominal
Type 4SP Type 4SH Type R13 Type R15
bore
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 15,8 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
The diameters of the hoses shall be measured in accordance with EN ISO 4671. The diameter over
reinforcement and outside diameter of the hoses shall conform to the values given in Table 2.
Table 2 — Diameter over reinforcement and outside diameter
Dimensions in millimetres, except nominal bore
Type 4SP Type 4SH Type R13 Type R15
Nominal
Outside Outside Outside Outside
Diameter over Diameter over Diameter over Diameter over
bore
diameter of diameter of
...