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Sinohydr EN856 4SP hydraulic hose is a premium four-layer spiral wire reinforced hydraulic hose designed to meet the rigorous demands of modern hydraulic systems. Manufactured to the exacting EN856 4SP standard, this hose features an oil-resistant synthetic rubber inner tube, four layers of high-tensile steel wire reinforcement, and a durable oil and weather-resistant rubber cover. The construction ensures reliable performance in a wide range of industrial applications where consistent hydraulic power transmission is critical. Our EN856 4SP spiral wire hydraulic hose is engineered to handle working pressures up to 45 MPa, making it ideal for medium to high-pressure hydraulic operations. Available in nominal diameters from 6 mm to 51 mm (1/4" to 2"), this versatile hose offers exceptional flexibility and resistance to abrasion, oil, and weathering. It is suitable for conveying various hydraulic fluids including glycol, mineral oil, lubricants, emulsions, and hydrocarbons, with an operating temperature range from -40℃ to +100℃. For water-based fluids, the recommended temperature range is 0℃ to 70℃. Note that this hose is not compatible with phosphate ester-based fluids.
Our EN856 4SP high pressure hydraulic hose delivers exceptional pressure handling capabilities, with working pressures ranging from 16.5 MPa to 45 MPa depending on the diameter. The four layers of tightly wound spiral steel wire reinforcement provide superior burst strength, ensuring safe and reliable operation even under peak load conditions. Each hose is tested to withstand a minimum burst pressure of 4 times its rated working pressure, offering an excellent safety margin for industrial applications.
Despite its robust construction, the EN856 4SP flexible hydraulic hose maintains excellent flexibility, allowing for easy installation in tight spaces and complex routing configurations. The optimized design minimizes bend radius requirements, reducing the risk of kinking and premature failure. This flexibility translates to lower installation costs and improved system efficiency, as less space is required for hose routing.
The high-quality synthetic rubber inner tube provides excellent resistance to oil, fuel, and hydraulic fluids, preventing degradation and extending service life. The outer cover is specially formulated to resist abrasion, weathering, ozone, and UV exposure, making it suitable for both indoor and outdoor applications. The steel wire reinforcement is galvanized to prevent corrosion, ensuring long-term structural integrity even in harsh environments.
We offer EN856 4SP hydraulic hose in 9 standard sizes, covering nominal diameters from 6 mm to 51 mm (1/4" to 2"). Each size is available in standard lengths, and we also provide custom cutting and assembly services to meet your specific requirements. Our experienced team can work with you to create custom hose assemblies tailored to your unique application needs.
Product Series | Nominal Diameter | Size | ID | W.D | OD | W.P | B.P | Min.B.R | W.T | |||
4SP | mm | inch | min | max | min | max | min | max | Mpa | Mpa | mm | Kg/m |
4SP-4-06 | 6 | 1/4" | 6.2 | 7 | 14.1 | 15.6 | 17.1 | 18.7 | 45 | 180 | 150 | 0.55 |
4SP-6-10 | 10 | 3/8” | 9.3 | 10.1 | 16.9 | 18.1 | 20.6 | 22.2 | 44.5 | 178 | 180 | 0.75 |
4SP-8-12.5 | 12.5 | 1/2“ | 12.3 | 13.5 | 19.4 | 21 | 23.8 | 25.4 | 41.5 | 166 | 230 | 0.9 |
4SP-10-16 | 16 | 5/8” | 15.5 | 16.7 | 23 | 24.6 | 27.4 | 29 | 35 | 140 | 250 | 1.06 |
4SP-12-19 | 19 | 3/4" | 18.6 | 19.8 | 27.4 | 29 | 31.4 | 33 | 35 | 140 | 300 | 1.63 |
4SP-16-25 | 25 | 1” | 25 | 26.4 | 34.5 | 36.1 | 38.5 | 40.9 | 28 | 112 | 340 | 2.07 |
4SP-20-31.5 | 32 | 1-1/4" | 31.4 | 33 | 45 | 47 | 49.2 | 52.4 | 21 | 84 | 460 | 3.13 |
4SP-24-38 | 38 | 1-1/2” | 37.7 | 39.3 | 51.4 | 53.4 | 55.6 | 58.8 | 18.5 | 74 | 560 | 4.31 |
4SP-32-51 | 51 | 2“ | 50.4 | 52 | 64.3 | 66.3 | 68.3 | 71.4 | 16.5 | 66 | 660 | 5.44 |
Additional Specifications:
Construction: Oil synthetic rubber inner tube, 4 layers spiral wire reinforcement, 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
Customization: Available upon request
EN856 4SP industrial hydraulic hose is widely used across various industries for medium to high-pressure hydraulic power transmission applications. Common applications include:
Construction equipment (excavators, loaders, bulldozers, cranes)
Agricultural machinery (tractors, harvesters, irrigation systems)
Mining equipment
Material handling equipment (forklifts, conveyor systems)
Industrial machinery and manufacturing equipment
Marine and offshore applications
Automotive and transportation systems
Hydraulic presses and tools
This hose is particularly well-suited for applications where a balance of pressure resistance, flexibility, and cost-effectiveness is required. It is the standard choice for most general-purpose hydraulic systems operating at pressures up to 45 MPa.
EN856 4SP and EN856 4SH are both four-layer spiral wire reinforced hydraulic hoses, but they differ in their pressure ratings and construction. EN856 4SH hydraulic hose uses higher tensile strength steel wire, resulting in higher working pressures for the same diameter. Generally, 4SH hoses have approximately 20% higher working pressure than equivalent 4SP hoses.
The maximum operating temperature for EN856 4SP hydraulic hose is +100℃ when conveying standard hydraulic fluids. For water-based fluids, the maximum recommended temperature is 70℃. The minimum operating temperature is -40℃.
No, EN856 4SP hydraulic hose is not compatible with phosphate ester-based fluids. Using this hose with phosphate esters will cause rapid degradation of the inner tube, leading to premature failure and potential system damage. For phosphate ester applications, we recommend using our specialized EPDM or fluoropolymer lined hoses.
The minimum bend radius varies depending on the hose diameter, ranging from 150 mm for 6 mm (1/4") hose to 660 mm for 51 mm (2") hose. Exceeding the minimum bend radius can cause kinking, reduced flow, and premature hose failure.
Yes, we offer custom cutting and assembly services for all our EN856 4SP hydraulic hoses. We can supply hoses in any length up to 100 meters, and we can assemble them with a wide range of hydraulic fittings to create complete hose assemblies ready for installation.
