The Ultimate Guide to EN856 4SH & 4SP Hydraulic Hoses: Powering High-Pressure Systems
The Ultimate Guide to EN856 4SH & 4SP Hydraulic Hoses: Powering High-Pressure Systems
In the world of industrial hydraulics, where pressures are extreme and failure is not an option, the EN856 standard is the global benchmark for reliability. Within this standard, two grades stand out: the robust 4SP and the super-high-pressure 4SH. At Utigoflex, we engineer these hoses to deliver unmatched performance and safety.
What are EN856 4SH and 4SP Hoses?
These are high pressure, steel wire spiraled hoses designed for hydraulic systems operating under severe conditions. They are the go-to choice for applications where standard hoses are prone to failure.
EN856 4SP: Features four spiral layers of high-tensile steel wire. It is designed for very high-pressure applications.
EN856 4SH: Also with four spiral layers, but engineered for ultra-high, impulse-intensive applications, often offering even greater durability and a higher safety margin.
Inner Tube & Cover: Built to Last
Oil-Resistant Synthetic Rubber Tube: Specially formulated to withstand advanced biodiesel-based and mineral-based hydraulic fluids, preventing degradation from the inside out.
Abrasion & Weather-Resistant Cover: A tough, synthetic rubber cover protects the steel reinforcement from external damage, moisture, ozone, and physical abrasion, ensuring long service life.
Key Applications: Where Power Meets Precision
These hoses are essential in industries where downtime is costly and safety is paramount:
Heavy Machinery: Hydraulic systems in excavators, cranes, and bulldozers.
Mining Equipment: Drilling rigs, underground machinery, and longwall shields.
Steel Mills: Continuous casters and rolling mill equipment.
Shipbuilding & Offshore: Deck cranes, winches, and steering gear.
Injection Molding Machines: High-pressure clamping units.
Technical Specifications at a Glance
Temperature Range: -40°C to +100°C (-40°F to +212°F).
Pressure Rating: Capable of handling working pressures significantly higher than standard hoses (exact ratings depend on hose diameter).
Critical Precautions for Safe Use
To ensure maximum safety and performance, always adhere to these best practices:
Correct Selection: Never substitute a 4SH/4SP hose where it is not required, and never use a lower-spec hose in a 4SH/4SP application. Confirm pressure ratings and fluid compatibility.
Proper Assembly: These hoses must be assembled with the correct, matching ferrules and stems using professional crimping machines. Improper assembly is a leading cause of failure.
Avoid Sharp Bends: Ensure bend radii are not less than the recommended minimum. Use elbow fittings if necessary to prevent stress and premature failure at the coupling.
Inspect Regularly: Check for signs of abrasion, cover damage, oil leaks, or blistering. Replace the hose at the first sign of damage—do not wait for a failure.
Why Choose Utigoflex EN856 Hoses?
At Utigoflex, our 4SH and 4SP hoses are manufactured with precision and subjected to rigorous quality control. We provide a complete solution, from the highest-grade hose to the perfectly matched, durable fittings, ensuring your hydraulic systems operate with absolute reliability.
Upgrade your equipment with the hoses built for the toughest challenges. Contact Utigoflex today to find the right hose for your application.
