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Hydraulic Hose Component – Machinery and Equipment Manufacturing

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

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")

Standards

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

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hydraulic Hose.

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.

View Product Details

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

Interchangeable Parts

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

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation

4/5

Manufacturing capability

4/5

Inspection readiness

5/5

Supplier transparency

3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

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Frequently Asked Questions

What is the difference between a hydraulic hose and a hydraulic pipe?

A hydraulic hose is flexible, reinforced with layers, and used where movement, vibration, or complex routing is needed. A hydraulic pipe is rigid (typically steel), used for fixed installations with minimal flexibility requirements.

How often should hydraulic hoses be replaced?

Replace based on service life recommendations (often 1-5 years), inspection findings (cracks, abrasion, leaks, bulging), or after exceeding specified impulse cycles. Follow manufacturer guidelines and industry standards like ISO 18752 for lifecycle management.

What causes hydraulic hose failure?

Common causes include excessive pressure surges, abrasion against surfaces, improper bending (below minimum radius), temperature extremes, fluid incompatibility, aging of rubber materials, and incorrect installation (e.g., twisting, over-tightening fittings).

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Hydraulic Hose