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Sinohydr EN856 4SH hydraulic hose represents the pinnacle of high-pressure hydraulic hose technology, engineered to deliver exceptional performance in the most demanding industrial environments. Manufactured in strict compliance with the EN856 4SH standard, this hose features a premium oil-resistant synthetic rubber inner tube, four layers of ultra-high-tensile steel wire reinforcement, and a rugged oil and weather-resistant rubber cover. The advanced construction of our EN856 4SH heavy-duty hydraulic hose enables it to handle working pressures up to 42 MPa, making it the ideal choice for high-pressure hydraulic systems where reliability and safety are paramount. Available in nominal diameters from 19 mm to 51 mm (3/4" to 2"), this hose offers superior strength and durability while maintaining excellent flexibility. It is designed to convey a wide range of hydraulic fluids including glycol, mineral oil, lubricants, emulsions, and hydrocarbons, with an operating temperature range from -40℃ to +100℃. For water-based applications, the recommended temperature range is 0℃ to 70℃. As with our 4SP series, this hose is not suitable for use with phosphate ester-based fluids.
Our EN856 4SH ultra high pressure hydraulic hose delivers industry-leading pressure handling capabilities, with working pressures ranging from 25 MPa to 42 MPa depending on the diameter. The four layers of ultra-high-tensile steel wire reinforcement provide unmatched burst strength, ensuring reliable operation even in the most extreme high-pressure applications. Each hose is rigorously tested to withstand a minimum burst pressure of 4 times its rated working pressure, providing an exceptional safety margin for critical operations.
The EN856 4SH heavy-duty hydraulic hose is built to last in the harshest industrial conditions. The high-performance synthetic rubber inner tube offers superior resistance to oil, fuel, and hydraulic fluids, preventing degradation and extending service life. The thick, abrasion-resistant outer cover is specially formulated to withstand extreme weather conditions, ozone exposure, and mechanical abrasion, making it ideal for heavy-duty outdoor applications. The steel wire reinforcement is galvanized to prevent corrosion, ensuring long-term structural integrity.
Despite its heavy-duty construction, the EN856 4SH flexible high pressure hose maintains excellent flexibility, allowing for easier installation and routing in complex hydraulic systems. The optimized spiral wire design reduces hose stiffness, minimizing the force required for bending and reducing stress on fittings and connections. This results in lower installation costs, reduced maintenance requirements, and improved overall system efficiency.
We offer EN856 4SH hydraulic hose in 6 standard sizes, covering nominal diameters from 19 mm to 51 mm (3/4" to 2"). In addition to our standard product line, we also provide a special high-pressure variant (4SH-20-31.5T) with an increased working pressure of 35 MPa. We offer complete customization services, including custom lengths, special fittings, and custom hose assemblies tailored to your specific application requirements.
Product Series | Nominal Diameter | Size | ID | W.D | OD | W.P | B.P | Min.B.R | W.T | |||
4SH | mm | inch | min | max | min | max | min | max | Mpa | Mpa | mm | Kg/m |
4SH-12-19 | 19 | 3/4“ | 18.6 | 19.8 | 27.6 | 29.2 | 314 | 33 | 42 | 168 | 280 | 1.64 |
4SH-16-25 | 25 | 1" | 25 | 26.4 | 34.4 | 36 | 37.5 | 39.9 | 38 | 152 | 340 | 2.12 |
4SH-20-31.5 | 32 | 1-1/4" | 314 | 33 | 40.9 | 42.9 | 43.9 | 47.1 | 32.5 | 130 | 460 | 2.77 |
4SH-20-31.5T | 32 | 1-1/4" | 31.4 | 33 | 40.9 | 42.9 | 43.9 | 47.1 | 35 | 140 | 460 | 2.77 |
4SH-24-38 | 38 | 1-1/2” | 37.7 | 39.3 | 47.8 | 49.8 | 51.9 | 55.1 | 29 | 116 | 560 | 3.77 |
4SH-32-51 | 51 | 2“ | 50.4 | 52 | 62.2 | 64.2 | 66.5 | 69.7 | 25 | 100 | 700 | 5.06 |
Additional Specifications:
Construction: Oil synthetic rubber inner tube, 4 layers ultra-high-tensile spiral wire reinforcement, heavy-duty oil and weather resistant rubber cover
Operating Temperature: -40℃ to +100℃ (hydraulic fluids); 0℃ to 70℃ (water)
Compatible Fluids: Glycol, mineral oil, lubricants, emulsions, hydrocarbons
Not Compatible: Phosphate ester groups
Special Variant: 4SH-20-31.5T with 35 MPa working pressure
Customization: Available upon request
EN856 4SH high pressure industrial hydraulic hose is specifically designed for heavy-duty high-pressure hydraulic applications where standard 4SP hoses may not provide sufficient pressure capacity. Common applications include:
Heavy construction equipment (large excavators, mining trucks, heavy cranes)
Mining and quarrying equipment
Oil and gas industry equipment
Marine and offshore drilling operations
High-pressure hydraulic presses and tools
Steel and metal processing equipment
Forestry machinery
Waste management and recycling equipment
This hose is particularly well-suited for applications that require high pressure ratings combined with excellent durability and reliability. It is the preferred choice for critical hydraulic systems operating at pressures above 35 MPa, where failure could result in significant downtime or safety hazards.
EN856 4SH hydraulic hose uses ultra-high-tensile steel wire for its reinforcement layers, which provides significantly higher pressure capacity than standard 4SP hoses. For the same diameter, 4SH hoses typically offer approximately 20% higher working pressure, making them ideal for high-pressure applications.
The maximum working pressure in our EN856 4SH hydraulic hose series is 42 MPa, which is available in the 19 mm (3/4") diameter size. We also offer a special high-pressure variant (4SH-20-31.5T) with a working pressure of 35 MPa for the 32 mm (1-1/4") diameter.
Yes, EN856 4SH heavy-duty hydraulic hose is specifically designed for both indoor and outdoor applications. The outer cover is formulated to resist UV exposure, ozone, weathering, and abrasion, making it suitable for use in harsh outdoor environments.
The service life of EN856 4SH hydraulic hose depends on various factors including operating pressure, temperature, fluid compatibility, and environmental conditions. Under normal operating conditions, we recommend inspecting hoses annually and replacing them every 5-7 years. However, hoses operating in extreme conditions may require more frequent inspection and replacement.
Yes, all our EN856 4SH hydraulic hoses are manufactured in compliance with the EN856 4SH standard and undergo rigorous quality testing. We can provide material test certificates, pressure test reports, and other relevant documentation upon request to ensure compliance with industry regulations and standards.
