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Hydraulic hose for the railway industry DN25 1SN 88 bar

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€15.73

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lin. m.

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Hydraulic hose for the railway industry DN25 1SN 88 bar (EN 45545-2)

Specialized hydraulic hose for the railway industry DN25 1SN with a working pressure of 88 bar is a flexible pressure line with a single steel braid, designed for the rigorous requirements of railway transport and rolling stock. The hose meets the European fire protection standard EN 45545-2, which qualifies it for use in locomotives, passenger carriages, multiple units, as well as trams and track machinery. The outer cover made of flame-retardant, self-extinguishing synthetic rubber is characterized by very low smoke and toxic gas emissions in the event of fire. The hose is designed for the leak-free transport of mineral and synthetic oils, hydraulic fluids, water-glycol solutions, water, and compressed air in power, control, and auxiliary systems.

Application, construction, and advantages of the DN25 1SN railway hose

In rail vehicle installations, flexible pressure connections are subjected to vibrations, temperature changes, and the influence of atmospheric factors. The DN25 1SN 88 bar railway hose combines mechanical strength with the fire safety requirements of the railway industry.

EN 45545-2 fire certification: The outer synthetic rubber meets the requirements for flammability and low smoke toxicity (HL1, HL2, HL3 levels).
Compliance with hydraulic standards: Manufactured according to EN 853 1SN and SAE 100 R1AT standards, allowing for use with standard crimped fittings.
Single-braid steel construction: Reinforcement with a single high-tensile steel braid provides flexibility and a small bend radius at a working pressure of 88 bar.
Wide operating temperature range: From -40°C to +100°C (momentarily up to +125°C), enabling stable operation in winter conditions and with hot oil.
Environmental resistance: The rubber cover is resistant to abrasion, ozone, UV radiation, petroleum-based fluids, and atmospheric conditions.

What to connect the DN25 1SN railway hose with and how to avoid assembly errors?

Hydraulic hose for the railway industry DN25 1SN (internal diameter 1" – approx. 25,4 mm) works with standard power hydraulics fittings:

Crimping hose fittings: Standard metric fittings (DKOL/DKOS, CEL/CES), BSP inch (DKR, AGR), JIC, and ORFS sealed with T20 or T21 DN25 (1") ferules.
Working media: Petroleum-based hydraulic oils, synthetic esters, coolants (glycol), water, and compressed air.

When selecting and installing railway hoses, the required working pressure of the system must be carefully verified. For DN25 (1") diameter, the 1SN version offers a working pressure of 88 bar with a 4:1 safety factor (burst pressure is min. 352 bar). If the system requires higher pressure (e.g., up to 165 bar), the 2SN double-braid version should be used. Correct ferrule crimping on the machine depends on the crimping table provided by the fittings and hose manufacturer.

Technical specification

Technical parameter	Value / Description
Product name	Hydraulic hose for the railway industry DN25 1SN 88 bar
Nominal diameter (DN)	DN25 (1" inch / approx. 25,4 mm)
Construction type / Braid	1SN (1 high-tensile steel wire braid)
Maximum working pressure	88 bar
Burst pressure	352 bar (4:1 safety factor)
Railway fire standard	EN 45545-2 (HL1 / HL2 / HL3 levels)
Hydraulic standards	EN 853 1SN, SAE 100 R1AT, ISO 1436
Operating temperature range	from -40°C to +100°C (momentarily up to +125°C)
Inner / outer layer	Oil-resistant synthetic rubber / flame-retardant ozone-resistant rubber

Frequently Asked Questions (FAQ)

What does the EN 45545-2 standard mean for a hydraulic hose?

The EN 45545-2 standard specifies requirements for the fire properties of materials used in rail vehicles. A hose meeting this standard has a flame-retardant outer cover that limits fire spread and emits small amounts of smoke and toxic gases.

Do standard fittings and ferrules fit the DN25 1SN railway hose?

Yes, the geometric dimensions of the 1SN hose compliant with the EN 45545-2 standard correspond to the standard EN 853\. Common hydraulic fittings and T20 or T21 DN25 crimping ferrules are used for assembly.