Hydraulic Hoses/Pipes: Temperature Range -40°C to +120°C

Component Specifications

Definition

Hydraulic hoses and pipes are critical components in hydraulic systems that convey hydraulic fluid between components such as pumps, valves, cylinders, and actuators. They are engineered to withstand high pressures, temperature variations, and dynamic movements while maintaining fluid integrity and preventing leaks. Hoses are typically flexible, constructed with multiple layers including an inner tube, reinforcement layers (braided or spiral wire), and an outer cover, allowing for movement and vibration absorption. Pipes are rigid, usually made of steel or other metals, and used in fixed installations where minimal flex is required. Both must be compatible with hydraulic fluids and resistant to abrasion, corrosion, and environmental factors to ensure system reliability and safety.

Working Principle

Hydraulic hoses and pipes operate on the principle of fluid dynamics, transmitting hydraulic energy by conveying incompressible fluid under pressure. When hydraulic fluid is pressurized by a pump, it flows through these conduits to actuators or motors, converting fluid pressure into mechanical work. The design ensures minimal pressure drop and maintains fluid flow rates, with flexibility in hoses accommodating system movements and vibrations, while rigid pipes provide stable, leak-free connections in static setups.

Materials

Inner tube: Synthetic rubber (e.g., NBR, EPDM, FKM) or thermoplastic (e.g., PA, PTFE) for fluid compatibility; Reinforcement: High-tensile steel wire (braided or spiral) or textile fibers for pressure resistance; Outer cover: Synthetic rubber, polyurethane, or thermoplastic for abrasion and environmental protection; Fittings: Carbon steel, stainless steel, or brass, often with crimped or reusable ends.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bend Radius	Specified per hose type
Inner Diameter	3 mm to 100 mm
Pressure Rating	Up to 6000 psi (414 bar)
Temperature Range	-40°C to +120°C
Fluid Compatibility	Mineral oil, water-glycol, synthetic fluids

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, DIN EN 853, DIN EN 856, SAE J517

Parent Products

This component is used in the following industrial products

Hydraulic System

A power transmission system that uses pressurized hydraulic fluid to generate and control mechanical force and motion.

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Engineering Analysis

Risks & Mitigation

Pressure bursts causing fluid leaks and injury
Abrasion leading to hose failure
Chemical incompatibility degrading materials
Improper installation causing leaks or disconnection
Temperature extremes reducing lifespan

FMEA Triads

Trigger: Overpressure exceeding hose rating
Failure: Hose burst and fluid leakage
Mitigation: Use pressure relief valves and select hoses with adequate safety margins

Trigger: Abrasion from contact with surfaces
Failure: Outer cover wear and reinforcement exposure
Mitigation: Install protective sleeves or reroute hoses away from abrasive areas

Trigger: Incompatible hydraulic fluid
Failure: Inner tube swelling or cracking
Mitigation: Verify fluid compatibility with hose material specifications

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Dimensional tolerances per ISO 3601 for fittings, pressure ratings within ±10% of specified values

Test Method

Pressure testing per ISO 1402 (impulse and burst tests), leak testing with fluid under operational conditions

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.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Hydraulic Hoses/Pipes

Manufacturer profiles associated with Hydraulic Hoses/Pipes.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Main Frame

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Shaft Bearing

Precision component supporting rotating shafts in vibration motors to reduce friction and maintain alignment.

Frequently Asked Questions

What is the difference between hydraulic hoses and pipes?

Hydraulic hoses are flexible, multi-layered conduits used where movement or vibration is present, while pipes are rigid, typically metal tubes for fixed installations with minimal flex requirements.

How do I select the right hydraulic hose for my application?

Consider factors such as operating pressure, temperature range, fluid type, bend radius, environmental conditions (e.g., abrasion, chemicals), and compliance with standards like ISO or SAE to ensure safety and performance.

What are common failure modes of hydraulic hoses?

Common failures include abrasion damage, cracking from ozone or UV exposure, fitting leaks, internal tube degradation from incompatible fluids, and burst from overpressure or fatigue.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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 Hoses/Pipes