kSIST FprEN 856:2026

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 all flame retardant HFD fluids 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 aller flammhemmenden HFD-Flüssigkeiten 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 de tous les fluides HFD retardateurs de flamme, 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: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 05-Jan-2026
• Due Date: 23-Feb-2026
• Ref Project: FprEN 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

Overview

prEN 856 (FprEN 856) is a CEN draft specification for rubber-covered spiral wire reinforced hydraulic hoses and hose assemblies. It covers four hose constructions - 4SP, 4SH, R13 and R15 - with nominal bores from 6 to 51 mm. The standard specifies performance, dimensional and testing requirements (hydrostatic, impulse, cold flexibility, abrasion, ozone, adhesion and fluid resistance) for hydraulic applications using ISO 6743-4 compatible fluids (excluding certain flame‑retardant HFD types), water‑based and water fluids. It does not cover end fittings or underground‑mining hoses.

Keywords: hydraulic hoses, spiral wire reinforced, hose assemblies, pressure rating, hydrostatic testing, impulse test, EN 856, CEN.

Key topics and technical requirements

• Scope and hose types: Defines four types - 4SP (4‑steel wire spiral medium pressure), 4SH (4‑steel wire spiral extra high pressure), R13 and R15 (multiple spiral heavy‑duty high temperature).
• Materials and construction: Rubber lining and cover (oil/water resistant), alternating spiral steel wire plies separated by insulating rubber layers.
• Dimensions and tolerances: Inside/outside diameters, concentricity and length tolerances for hoses and hose assemblies measured per EN ISO 4671.
• Pressure performance: Specifies maximum working pressure, proof pressure and burst pressure per type and nominal bore (hydrostatic testing per EN ISO 1402).
• Impulse durability: Impulse testing per EN ISO 6803 - 4SP/4SH: 133% of working pressure, ≥400,000 cycles at 100 °C; R13/R15: 120% of working pressure, ≥500,000 cycles at 120 °C, with no leakage before the required cycles.
• Bend and cold performance: Minimum bend radii by type and cold‑temperature flexibility requirements (EN ISO 10619‑2).
• Fluid and environmental resistance: Tests for oil resistance (ISO 1817), water/water‑based fluid resistance, abrasion (ISO/TS 20444), ozone resistance (EN ISO 7326), and adhesion between components (EN ISO 8033).
• Limitations: Not suitable for castor‑oil or ester‑based fluids; end fittings not specified in this document.

Applications and users

This standard is intended for manufacturers, test laboratories, specifiers and purchasers of hydraulic hoses and hose assemblies used in mobile and industrial hydraulic systems where high pressure, temperature resistance and long impulse life are required. Typical applications include construction and agricultural machinery, industrial hydraulics, and mobile equipment requiring spiral‑reinforced hoses with defined pressure ratings and validated test performance.

Related standards

• EN ISO 1402 - Hydrostatic testing
• EN ISO 4671 - Dimension measurement of hoses
• EN ISO 6803 - Hydraulic-pressure impulse test
• EN ISO 7326 - Ozone resistance
• EN ISO 8033 - Adhesion between components
• EN ISO 10619-2 - Cold bending tests
• ISO 1817 - Effect of liquids on rubber
• ISO/TS 20444 - Abrasion resistance of outer cover

prEN 856 (draft) aligns EN 853, 854, 856 and 857 and is intended to supersede EN 856:2015+AC:2019 when approved. Use this standard to ensure consistent specification, testing and selection of spiral wire reinforced hydraulic hoses for reliable, compliant system design.

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 856:2024
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
oSIST prEN 856:2024 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

oSIST prEN 856:2024
oSIST prEN 856:2024
DRAFT
EUROPEAN STANDARD
prEN 856
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.

oSIST prEN 856:2024
prEN 856:2024 (E)
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

oSIST prEN 856:2024
prEN 856:2024 (E)
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.
oSIST prEN 856:2024
prEN 856:2024 (E)
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
oSIST prEN 856:2024
prEN 856:2024 (E)
— 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.
oSIST prEN 856:2024
prEN 856:2024 (E)
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.
...