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Hydraulic hose DN25 1SN ULTIMATE 135deg. 88 bar

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€15.30

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Quantity

lin. m.

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Manufacturer: HYDRON hydraulika siłowa (go to products)

Shipping time: 24 hours

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from €3.62 - GLS Courier (Poland)

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Hydraulic hose for hot oil DN25 1SN ULTIMATE 135deg. 88 bar

What is the hydraulic hose DN25 1SN ultimate 135°C 88 bar

This model is a high-temperature hose for power hydraulic systems, designed to work with hydraulic oil in installations where the hose is exposed to elevated temperature of the medium or the environment. The DN25 diameter indicates a hose with an internal diameter of 25 mm (1”), and 1SN indicates a design with a single steel braid that carries pressure loads and stabilizes the hose during operation. In practice, it is a solution for medium- and low-pressure systems where flow (DN25) and temperature resistance up to 135°C in continuous operation, with a possibility of short-term operation up to 150°C, are important.

How the 1SN hose is built and how it works in the system

The hose has an inner layer of NBR rubber resistant to hydraulic oils, reinforcement in the form of a single high-strength steel braid, and an outer layer of synthetic rubber designed to protect the hose from abrasion and atmospheric influences. This combination of materials has a specific purpose: the inner tube is responsible for tightness and chemical resistance to typical hydraulic media, the steel braid takes on the forces resulting from the working pressure, and the outer coating protects the whole in real operating conditions, where the hose rubs against machine components, works in dust, mud, or in contact with oil. In this case, the Ultimate version is a “hot oil” variant, meaning where standard hoses harden faster, lose flexibility, or age from the temperature.

Norms and standards to look at when choosing

For this hose, standards and references are indicated that organize construction and testing requirements: DIN EN 853 1SN and equivalents/references such as ISO 1436:2009, SAE 100 R1 AT (R1 ATS), ISO 1307, and additionally EN 13463-1 and EN 1804-3 (in the context of specific industry applications). In practice, this means that the hose is designed and described according to recognizable power hydraulic market standards, which facilitates the selection of a replacement, comparison of parameters, and matching of crimping equipment. If a customer asks for a “1SN R1AT 1 inch hose”, it is exactly this construction level, with the difference that here the emphasis is placed on the operating temperature.

Where this hose works best

DN25 with one steel braid and a working pressure of 88 bar is a typical choice where a larger flow cross-section is needed, but the system does not work at very high pressures. The product card indicates applications in industry, compressors, and mining, meaning in environments where hoses often work at elevated temperatures and in heavy mechanical conditions. In practice, this also fits hydraulic power packs, installations supplying actuators, and return or supply lines in machines where the oil “generates heat” after a long duty cycle. If you need a hose for hot oil in a 1” diameter, this variant is a logical choice because it combines an increased temperature range with a classic 1SN design, easy to assemble on typical presses. Important utility information: the product is sold by the meter and can be cut to the desired length; for cut-to-size items, returns do not apply to the cut sections, and a possible return refers only to full rolls. This is worth considering at the length planning and assembly stage.

Differences from a standard 1sn hose and when to choose 2sn

The difference felt in practice is temperature resistance. A typical “ordinary” 1SN hose is good for most oil systems, but in hot oil applications, the hose ages faster, loses flexibility, and micro-cracks in the coating appear more frequently. The Ultimate 135°C version is targeted at such operating conditions, which is why it makes sense when temperature is a real problem and not just “on paper”. On the other hand, switching from 1SN to 2SN makes sense when the required working pressure increases, larger pulsations occur, or the hose works under more dynamic loads. In the related section of the same product card, you can see the DN25 2SN Ultimate 135°C variant with a higher working pressure, which is a typical alternative when the installation requires more margin.

Most common selection and assembly errors that shorten service life

Most often, the problem is not a “bad hose”, but poor selection for the conditions. The first error is choosing DN25 only because “that's what was there”, without checking if the system actually requires 1” and whether the flow velocity is not too high or too low for a given line. The second error is ignoring the operating temperature: if the oil in the installation really works at high temperatures, a standard hose will age faster, and later the problem returns as “hoses are bursting”. The third error is assembly with a hose bend at too small a radius, which damages the internal layers and the braid. The fourth error is the selection of fittings and ferrules without matching the hose type and performing the crimp “by eye” instead of sticking to the dimensions and procedure for 1SN. If you are completing a hose assembly, it is worth choosing in one process also the elements that in practice decide on tightness and durability: hydraulic hose crimp fittings in the appropriate thread standard, crimp ferrules matched to 1SN, and spiral guards to protect against abrasion in friction points. You can use these phrases as internal linking to the relevant categories in the shop.

Technical support for hose selection and assembly

If you know you need DN25 1SN but are not sure about the fittings, the safest path is selection for a specific system: thread type, diameter, cone/seal angle, hose length, operating conditions, and the routing path in the machine. Then it is easy to avoid a situation where the hose itself is correct, but the assembly after crimping leaks or is too stiff for a given section. At Hydron, such cases can be solved quickly because the starting point is the parameters and standards from the product card and the practice of assembling hoses.

High-temperature hydraulic hose

251SN ULTIMATE Hydraulic hose with 1 steel braid
Internal diameter: 25mm
External diameter: 35.4mm
Pressure: 88 BAR
Inner layer: special synthetic rubber resistant to high-temperature hydraulic oils.
Reinforcement: 1 high-strength steel braid.
Outer layer: special synthetic rubber resistant to oils, abrasion, and weather conditions.
Temperature range: -50ºC to +135ºC, periodically up to +150ºC.

Standards: DIN EN 853 1 SN / TS 6387 EN 853 1 SN, SAE 100 R1 AT - R1 ATS / ISO 1436:2009, EN 853 / ISO 1436 / ISO 6805 / EN 13463-1, EN 1804-3 / ISO 1307.

Hoses cut to customer request for any quantity (cut hoses are not subject to return); returns are only possible for full rolls (quantity in roll? ask the seller), price per 1 running meter.