Spiral Hose Solutions for High-Pressure Hydraulics
SCOMERA Machinery Equipment (Beijing) Co., Ltd. designs and manufactures spiral‑wire hydraulic hose for demanding mobile and industrial systems. The range includes EN 856 4SP/4SH and SAE 100R12/R13/R15, plus factory‑crimped assemblies for reliable, leak‑tight service.
Definition and Types
A spiral hose is a hydraulic hose reinforced by multiple layers of high‑tensile steel wire laid in a spiral pattern. This structure resists high impulse and helps maintain stable pressure under pulsation.
- EN 856 4SP/4SH: Four‑layer reinforcement for high working pressure with tight bend radius.
- SAE 100R13/R15: Multi‑spiral models for ultra‑high pressure and severe pulsation.
- Standard vs heavy‑duty: Standard balances flexibility and pressure; heavy‑duty adds thicker covers, higher impulse life, and greater burst safety for harsh duty.
Construction and Materials
- Reinforcement: Precision‑controlled multi‑layer spiral winding distributes stress and limits kinking in compact routing.
- Inner tube: NBR‑based compounds for petroleum‑based hydraulic fluids and low permeability.
- Covers: Options for abrasion resistance, weathering/ozone durability, and flame‑retardant performance for enclosed or underground areas.
- Conductivity: Conductive covers for static dissipation in flammable zones; non‑conductive where electrical isolation is needed.
- Temperature and impulse: Typical operation from about −40°C to +100°C depending on compound; consult for elevated‑temperature options.
Key Features and Standards
- Pressure and safety: Designed to meet or exceed EN 856 and SAE 100R classes with robust burst margins.
- Flexibility: Optimized wire angles and cover design for competitive bend radius and easier installation.
- Chemical and weathering resistance: Suited for hydraulic oils and mild chemicals; ozone‑resistant for outdoor use.
- Abrasion protection: High‑abrasion covers help reduce downtime in aggressive routing.
- Testing and documentation: Batch proof testing, dimensional checks, and visual inspection available. Video reports and complete documentation support smooth customs clearance.
Applications
- Off‑highway and mining: Excavators, haul trucks, and drilling rigs operating under shock and abrasive conditions.
- Oil and gas power units: Hydraulic power packs with pulsating flow and site‑specific cover needs.
- Offshore wind: Stable impulse performance for nacelles and service equipment in variable temperatures.
- Industrial presses and automation: Stamping, injection, and robotic manipulators with cyclic loads.
Fittings and Assemblies
- Fittings: DIN, ISO, JIC, BSP, NPT, and ORFS threads and seat types for repeatable joints.
- Materials: Carbon steel for general duty and stainless steel for corrosive media or environments.
- Assemblies: Factory‑crimped hose assemblies supplied with crimp data, test records, and material traceability.
Selection Guide
- Pressure and cycle life: Define working and peak pressure; match duty cycle to 4SP/4SH or R13/R15.
- Temperature and media: Check fluid and ambient temperatures and compatibility with inner tube compounds.
- Environment: Choose covers for abrasion, weathering, flame retardancy, or conductivity as needed.
- Routing: Observe minimum bend radius, avoid torsion and pinch points, and align fittings with hose movement.
- Duty level: Use standard constructions for compact systems with moderate cycles; heavy‑duty for mining, quarrying, and continuous shock.
FAQs
- What is the difference between spiral and braided hydraulic hose?
- Spiral reinforcement offers higher impulse capacity and pressure stability. Braided hose suits lower pressures and provides higher flexibility for light‑duty circuits.
- Can these hoses handle pulsating flow and high impulse?
- Yes. Multi‑layer spiral reinforcement is designed for high impulse cycles and pulsating flow in heavy‑duty hydraulics.
- What testing is available before shipment?
- Batches undergo pressure proof testing, dimensional checks, and visual inspection. Video‑based reports are available on request.
- What temperature range is typical?
- Many constructions operate around −40°C to +100°C depending on compound. Contact us for higher‑temperature options.
Related Products
- Hydraulic braided hose (1SN/2SN) for medium‑pressure, compact routing
- PTFE smoothbore and corrugated hoses for aggressive media and wider temperatures
- Fuel dispensing hose assemblies
- Push‑on pneumatic hoses for air tools and automation
Contact Spiral Hose Manufacturer for a Quote
Share pressure class, temperature, media, length, bend radius, cover preference, and fitting standard. We provide validation, lead time, and global shipping with complete documentation.
