Hydraulic Hose: Component Specs, Materials & Applications

Component Specifications

Definition

A hydraulic hose is a reinforced flexible tube specifically engineered to convey hydraulic fluid between components in hydraulic machinery. It consists of an inner tube resistant to fluid degradation, multiple reinforcement layers (typically textile braid, steel wire braid, or spiral wound steel wire) for pressure containment, and an outer cover for environmental protection against abrasion, weather, and chemicals. It is a critical component in hydraulic hose assemblies, which include fittings and adapters.

Working Principle

The hydraulic hose operates by containing and directing pressurized hydraulic fluid (usually oil) from a pump to actuators (cylinders, motors) or between system components. Its flexibility allows for routing around obstacles and accommodating machine movement or vibration, while its reinforcement structure withstands internal pressure surges and pulsation without bursting or excessive expansion.

Materials

Inner Tube: Synthetic rubber (e.g., NBR, HNBR, EPDM, FKM) compatible with hydraulic fluids, temperatures, and system media. Reinforcement: High-tensile steel wire (braided or spiral), textile (polyester, aramid), or hybrid layers. Outer Cover: Abrasion-resistant synthetic rubber (e.g., CR, CSM) or thermoplastic (e.g., polyurethane) with additives for weather, ozone, and oil resistance.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bend Radius	Minimum bend radius specified (e.g., 2x hose OD)
Compatibility	Hydraulic oils (mineral, synthetic), water-glycol, HFA/HFB fluids, certain chemicals
Pressure Rating	Working Pressure (WP): 5 to 100 MPa (e.g., 3000 to 15000 psi), Burst Pressure typically 4x WP
Temperature Range	-40°C to +120°C (varies by material)
Inner Diameter (ID)	Common sizes: 6 mm to 51 mm (1/4" to 2")

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 18752, ISO 1436, ISO 3862, SAE J517, DIN EN 853, DIN EN 856

Parent Products

This component is used in the following industrial products

Hydraulic Hose Assembly

A pre-assembled hydraulic hose with fittings for fluid power transmission in hydraulic systems.

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Engineering Analysis

Risks & Mitigation

Hose rupture leading to high-pressure fluid injection injuries
System downtime due to unexpected failure
Fluid leakage causing environmental contamination
Fire hazard if flammable fluid leaks near ignition sources
Reduced system efficiency from pressure drops or leaks

FMEA Triads

Trigger: Abrasion from contact with machine parts or environment
Failure: Outer cover wear-through exposing reinforcement, leading to hose rupture
Mitigation: Use protective sleeves (e.g., spiral wrap), proper routing with clamps, select abrasion-resistant cover materials, regular visual inspections

Trigger: Fluid incompatibility or high temperature
Failure: Inner tube degradation (swelling, cracking), causing blockages or leaks
Mitigation: Verify hose material compatibility with fluid and operating temperature range per ISO 18752, monitor fluid condition, use temperature-resistant materials (e.g., FKM for high temps)

Trigger: Excessive pressure spikes or cyclic fatigue
Failure: Reinforcement fatigue leading to burst or leak at fittings
Mitigation: Select hose with adequate pressure rating and impulse cycle capacity, install pressure relief valves, avoid sharp bends, use proper assembly techniques per SAE J517

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 1307 for inner/outer diameters; pressure tolerance typically ±0% to +10% of rated working pressure

Test Method

Pressure testing per ISO 1402 (proof pressure, burst pressure); impulse testing per ISO 6803; flexibility and bend radius tests per ISO 1746; material compatibility tests per ISO 1817

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Hydraulic Hose

12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

CJan Fluid Technology Co., Ltd.

Shanghai, CN

ISO 9001:2015 IATF 16949

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