EN 853:2015 pdf download.Rubber hoses and hose assemblies – Wire braid reinforced hydraulic type – Specification.
EN 853 specifies requirements for four types of wire braid reinforced hoses and hose assemblies of nominal bore from 5 to 51. They are 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;
— water based fluids at temperatures ranging from -40 °C to +70 °C;
— water 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 I The hoses are not suitable for use with castor oil based and 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 standardized in separate standards.
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 6 743-4)
EN ISO 6803, Rubber or plastics hoses and hose assemblies – Hydraulic-pressure impulse test without flexing
EN ISO 7233, Rubber and plastics hoses and hose assemblies – Determination of resistance to vacuum
3 Types of hoses
Four types of hoses are specified
1) Type 1ST-hoses with a single braid of wire reinforcement,
2)Type 2ST-hoses with two braids of wire reinforcement,
3)Type 1SN-hoses with a single braid of wire reinforcement,
4) Type 2SN- hoses with two braids of wire reinforcement
Types lSN and 2SN shall be of the same reinforcement construction as types 1ST and 2ST, except that they shall have thinner covers designed to assemble with fittings that do not require removal of the cover or a portion of the cover
4 Materials and construction
Hoses shall consist of an oil and water resistant synthetic rubber lining, one or two layers of high tensile steel wire and an oil and weather resistant rubber cover.
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.EN 853 pdf free download.