T: +86-19511798062
E: sales@honestflex.com
E: sales@honestflex.com
Licang District, Qingdao, Shandong, China
Honestflex DIN EN 856 4SP hydraulic hose is a premium heavy-duty hydraulic rubber hose reinforced with four layers of spiraled high-tensile steel wire. Engineered for extreme high-pressure hydraulic systems, this hose delivers excellent resistance to pressure impulses, abrasion, oil, ozone, and weather. It is widely used in construction machinery, mining equipment, oilfield systems, marine equipment, and industrial hydraulic applications where reliable performance under harsh conditions is required.
Ultra-high pressure capacity with four-spiral steel wire reinforcement
Excellent impulse fatigue resistance for long service life
Extreme flexibility and small bending radius for tight installations
Outstanding oil, ozone, UV, and weather resistance
MSHA flame-retardant cover suitable for mining and underground use
Stable performance under pressure shocks and heavy working conditions
Compliant with DIN EN 856 standard
DIN EN 856 4SP hydraulic hose is designed for high-pressure hydraulic systems in:
Excavators, loaders, bulldozers, and heavy construction machinery
Mining equipment, tunnel boring machines, and underground hydraulic systems
Cranes, lifting equipment, and hoisting systems
Oilfield machinery, fracturing trucks, and drilling equipment
Marine and port hydraulic systems
Industrial presses, injection molding machines, and metalforming equipment
Agricultural and forestry machinery
Superior pulse fatigue resistance:
Rigorous pulse testing verifies that it can withstand over 400,000 pressure shock cycles (far exceeding ISO 6803 standard requirements), significantly extending the hose's service life under dynamic high pressure environments.
Ultra-High Pressure Resistance
The four-layer spiral steel wire reinforcement delivers exceptional burst strength and working pressure ratings, making it suitable for the most demanding high-pressure applications in construction, mining, and oil & gas industries.
Comprehensive Raw Material Quality Control
Multiple performance tests are conducted on rubber raw materials before production, including tensile strength, Shore hardness, vulcanization characteristics, adhesion strength, aging performance, ozone resistance, and low-temperature brittleness. Steel wire tensile strength reaches up to 3250N, ensuring stable quality for every batch.
Durable, MSHA-Compliant Outer Cover
The abrasion-resistant, flame-retardant outer rubber meets MSHA standards, with excellent resistance to friction, scratches, ozone, UV, and weathering. It performs reliably in mining tunnels, construction sites, and all-weather outdoor conditions.
Wide Temperature and Media Compatibility
Maintains good flexibility at -40°C and does not soften or deform at +125°C, meeting the needs of extremely cold and tropical regions. Compatible with a wide range of media, including petroleum-based hydraulic oils, water-glycol fluids, mineral oils, lubricating oils, diesel, gasoline, and biodegradable hydraulic oils.
Full Production Traceability
A production identification card system records every process step, enabling full lifecycle quality traceability. This allows for easy problem identification and accountability, ensuring consistent performance across all orders.
Custom Assembly Services Available
We offer custom hydraulic hose assembly services, including hose cutting, crimping, and connector installation. Choose from various end fittings to meet your exact operational requirements, reducing on-site installation time and leakage risks.
Metric Size | Inch Size | SAE Dash size | I.D. | Braid | O.D. | Max W.P. | Min B.P. | Min B.R. | Weight | ||||
(mm) | (mm) | (mm) | |||||||||||
mm | inches | Dash | Min | Max | Min | Max | Min | Max | Mpa | psi | Mpa | mm | Kg/m |
6.3 | 1/4 | 04 | 6.2 | 7.0 | 14.1 | 15.3 | 17.1 | 18.7 | 45.0 | 6525 | 180.0 | 150.0 | 0.6 |
10 | 3/8 | 06 | 9.3 | 10.1 | 16.9 | 18.1 | 20.6 | 22.2 | 44.5 | 6453 | 178.0 | 180.0 | 0.76 |
12.5 | 1/2 | 08 | 12.3 | 13.5 | 19.4 | 21.0 | 23.8 | 25.4 | 41.5 | 6018 | 166.0 | 230.0 | 0.9 |
16 | 5/8 | 10 | 15.5 | 16.7 | 23.0 | 24.6 | 27.4 | 29.0 | 35.0 | 5075 | 140.0 | 250.0 | 1.1 |
19 | 3/4 | 12 | 18.6 | 19.8 | 27.4 | 29.0 | 31.4 | 33.0 | 35.0 | 5075 | 140.0 | 300.0 | 1.48 |
25 | 1 | 16 | 25.0 | 26.4 | 34.5 | 36.1 | 38.5 | 40.9 | 28.0 | 4060 | 112.0 | 340.0 | 2.02 |
31.5 | 1-1/4 | 20 | 31.4 | 33.0 | 45.0 | 47.0 | 49.2 | 52.4 | 21.0 | 3045 | 84.0 | 460.0 | 2.98 |
38 | 1-1/2 | 24 | 37.7 | 39.3 | 51.4 | 53.6 | 55.6 | 58.8 | 18.5 | 2683 | 74.0 | 560.0 | 3.55 |
51 | 2 | 32 | 50.4 | 52.0 | 64.3 | 66.3 | 68.2 | 71.4 | 16.5 | 2393 | 66.0 | 660.0 | 4.86 |
Professional hydraulic hose manufacturer with strict quality control
Full-size range from 1/4″ to 2″ (ID 6.3mm–51mm)
High-grade raw materials and precision production
Stable pressure performance and long service life
Custom lengths & hose assembly services available
Factory direct supply with fast delivery
Daily impulse and burst pressure testing to ensure reliable quality
Impulse Testing Machine
Burst Testing Machine
A: DIN EN 856 4SP is a high-pressure spiral wire reinforced hydraulic hose standard. It features four layers of high-tensile steel wire spiral reinforcement, designed for heavy-duty hydraulic systems requiring extreme pressure resistance and long impulse fatigue life. It is widely used in construction machinery, mining equipment, and industrial presses.
A: The “4SP” designation means:
4: Four layers of steel wire reinforcement
S: Spiral construction (vs. braided reinforcement)
P: Heavy-duty high-pressure application
This structure delivers significantly higher working pressure and burst pressure compared to standard 1SN/2SN braided hoses.
A: Typical specifications include:
Inner diameter range: 1/4" to 2" (6.3mm to 51mm)
Working pressure: 16 MPa to 42 MPa (varies by size)
Burst pressure: 4 times the working pressure (4:1 safety factor)
Temperature range: -40°C to +125°C (for petroleum-based hydraulic fluids)
Reinforcement: Four alternating layers of high-tensile steel wire spiral
A: It is suitable for:
Petroleum-based hydraulic oils
Water-glycol fluids
Synthetic hydraulic oils
Some biodegradable hydraulic fluids (please confirm compatibility before use)
It is not recommended for use with brake fluids, phosphate esters, or corrosive chemicals without prior material validation.
A: Common applications include:
Excavators, loaders, bulldozers, and other heavy construction machinery
Mining equipment and underground hydraulic systems
Cranes, lifting equipment, and hoisting systems
Industrial presses, injection molding machines, and metalforming equipment
Oilfield machinery and fracturing equipment
A: The key difference is in working pressure and construction:
4SP: Standard four-spiral hose, designed for general high-pressure applications
4SH: High-pressure variant with upgraded reinforcement, offering higher working pressure and burst resistance
4SP is the most common choice for standard heavy-duty applications, while 4SH is used for more demanding, ultra-high-pressure systems.
A: Service life depends on working conditions, but under normal use (within rated pressure, temperature, and bend radius), it can last 2–5 years. Regular inspection is recommended to replace hoses showing signs of wear, cracks, bulges, or leaks before failure occurs.
A: Yes. We offer custom cut-to-length services and complete hose assembly solutions, including:
Custom hose lengths
Crimped fittings (BSP, JIC, ORFS, metric, etc.)
Pre-assembled hose kits for specific machinery
Custom marking and branding options
A: Our DIN EN 856 4SP hydraulic hose is fully compliant with the DIN EN 856 standard, and undergoes rigorous testing including:
Pressure impulse testing
Burst pressure testing
Flexibility and bend radius testing
Ozone and weather resistance testing
Abrasion resistance testing
A: The minimum bend radius varies by inner diameter (ID). As a general rule, the minimum bend radius for 4SP hose is larger than that of braided hoses. Specific values are listed in our technical data sheet for each size. Always install the hose with a bend radius greater than the specified minimum to avoid premature failure.
