ÖNORM EN 856

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. 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 OC for types 4SP and 4SH and -40 C to +I20 OC 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. The 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 should not be operated outside the limits of this standard. NOTE 3: Requirements for hydraulic hoses for underground mining are standardised in separate standard