Hydraulic Hose EN856-4SP/4SH

Recommended For:Extremely high pressure and high impulse hydraulic applications. This hose is the most flexible EN856 4SP/4SH hose in the industry with superior impulse performance ( tested to 1,000,000 impulse cycles at bend radius lower than EN 856 Standard).Compatible with iodegradable hydraulic fluids like synthetic esters, polyglycols and vegetable oils as well as petroleum-based fluids.
Tube:Black, oil-resident synthetic rubber(Nitrile)
Reinforcement:Four alternating layers of spiraled, high-tensile steel wire.
Cover:Black, oil, abrasion and weather resistant, synthetic rubber.
Temperature Range:-40℉ to +250℉ (-40℃ to +121℃)

 

 

EN856-4SP

 

Item  Code	Hose  ID		Hose  O.D.		Working  Pressure		Min.  Burst Pressure		Min.  Bend Radius		Weight
	inch	mm	inch	mm	psi	MPa	psi	MPa	inch	mm	kg/m	lb/ft
4SP-10	3/8	9.5	0.83	21.1	6650	45.9	26600	183.4	4.3	109.2	0.78	0.524
4SP-13	1/2	12.7	0.96	24.4	6150	42.4	24600	169.6	4.7	119.4	0.93	0.625
4SP-16	5/8	15.9	1.09	27.7	5800	40	23200	160	5.5	139.7	1.17	0.786
4SP-19	3/4	19	1.24	31.5	5500	37.9	23925	165	6.7	170.2	1.48	0.995
4SP-25	1	25.4	1.54	39.1	4650	32.1	20300	140	13.4	340.4	2.02	1.357
4SP-32	1  1/4	31.8	1.96	49.8	3050	21	18120	124.9	18.1	459.7	3.05	2.05
4SP-38	1  1/2	38.1	2.25	57.2	2685	18.5	10730	74	22	560	3.52	2.365
4SP-51	2	50.8	2.75	69.8	2395	16.5	9570	66	26	660	5.2	3.494

 

EN856-4SH

 

Item  Code	Hose  ID		Hose  O.D.		Working  Pressure		Min.  Burst Pressure		Min.  Bend Radius		Weight
	inch	mm	inch	mm	psi	MPa	psi	MPa	inch	mm	kg/m	lb/ft
4SH-19	3/4	19	1.24	31.5	6100	42.1	26100	180	11	280	1.72	1.16
4SH-25	1/1	25.4	1.48	37.6	5600	38.6	26100	180	13.4	340	2.14	1.44
4SH-32	1  1/4	31.8	1.78	45.2	5050	34.8	20300	140	18.1	460	2.96	1.99
4SH-38	1  1/2	38.1	2.11	53.5	4200	29	16820	116	22	560	3.2	2.15
4SH-51	1/2	50.8	2.68	68.1	3625	25	14500	100	27.6	700	5.3	3.56

 

 

DIN EN 856 4SP/4SH hydraulic hose is designed for high pressure applications to deliver petroleum-based hydraulic fluids. The hose consists of three parts: inner tube, steel wire winding reinforcement layer and outer rubber cover. The oil resistance of the inner rubber layer ensures the smooth delivery of hydraulic fluids. The reinforcement layer is wound with four layers of high-tensile steel wire, which gives it the strength and durability required to withstand high pressures up to 6000 psi. The outer rubber layer is an excellent synthetic rubber, corrosion and oil resistant, resistant to exposure to various environments, precipitation and UV radiation.

The hydraulic hose DIN EN856 4SP/4SH is compatible with a variety of hydraulic oils and has a wide range of uses. It is suitable for various mechanical systems, such as mine hydraulic supports, oil field development equipment, engineering construction machinery, cranes, mining equipment, injection molding machinery, agricultural machinery and various machine tools, etc.

What is DIN EN 856 4SP/4SH?

4SP hydraulic hose is a high-performance hose that is reinforced with four layers of steel wire spirals. “4SP” refers to the structure of the hose, it is a 4-wire spiral hose. It has excellent flexibility and durability. The outstanding feature of the hose is that it can withstand extreme pressures, making it widely used in heavy-duty applications such as construction, agriculture, mining, and manufacturing industries. Not only that, 4SP steel spiral hydraulic hose is made of high-quality synthetic rubber and has excellent wear resistance, weather resistance, and oil resistance. For those users who are looking for reliability, durability, and high-pressure performance in hydraulic systems, 4SP hydraulic hose is a top solution.

 

What material is the EN856 made of?

EN856 refers to the German standard implementation standard, which is mainly used to specify the requirements of rubber-coated spiral wire reinforced hydraulic hoses and hose assemblies. These hoses include 4SP, 4SH, R12 and R13 types, suitable for different working conditions and media.

EN856 hydraulic hose is composed of an oil-resistant inner layer, a high-strength stainless steel wire winding reinforcement layer and a wear-resistant and weather-resistant outer layer.

 

What is the full form of 4SP/4SH?

4SP/4SH refers to DIN EN 856 4SP/4SH, a high-pressure hydraulic hose with four layers of steel wire spiral as reinforcement layer. Suitable for various high-pressure hydraulic systems to transport petroleum-based hydraulic fluids.

 

What is the difference between 4SP and 4SH hose?

‌DIN EN856 4SH and 4SP are both reinforced with four layers of steel wire winding. They are both suitable for high-pressure hydraulic systems. The main difference lies in the pressure bearing capacity and the outer diameter of the hose. ‌The pressure of the 4SH hydraulic hose is slightly higher than that of the 4SP. At the same time, the outer diameter of the 4SH is slightly smaller than that of the 4SP, so the pressure that the 4SH can withstand is higher than that of the 4SP.

 

Key Differences Between EN 856 4SH Hydraulic Hose and 4SP

 

The en 856 4sh hydraulic hose and the 4SP variant are both specialized, heavy-duty hoses designed for extremely high pressure and high impulse hydraulic applications. While they share the fundamental three-part construction and a four-layer reinforcement, their distinction lies primarily in their ultimate pressure bearing capacity and structural optimization, which subtly shifts their ideal usage in the field.

Both the 4SH and 4SP hoses are identically reinforced with four alternating layers of spiraled, high-tensile steel wire, which imparts the immense strength required to withstand high working pressures. This shared structure ensures both types are suitable for demanding hydraulic systems that transport petroleum-based hydraulic fluids and are classified under the en 856 standard for use in heavy industries like mining, construction, and injection molding.

However, the main difference, defined by the standard's specifications, revolves around the maximum pressure tolerance. The en 856 4sh hydraulic hose is specifically engineered to withstand a slightly higher pressure than the 4SP variant across corresponding inner diameters. This increased pressure rating is often achieved through a more tightly controlled winding and lay angle of the steel wires, and critically, by having an outer diameter that is slightly smaller than that of the 4SP at the same size. This reduced external profile contributes to a higher pressure capacity by concentrating the resistive force more efficiently.

In terms of applications, the 4SH is typically reserved for the absolute most demanding scenarios where the required working pressure is at the maximum limit for safety and performance, or where the space demands the smallest possible outer diameter hose. The 4SP, with its slightly lower pressure rating, is broadly used in general heavy-duty applications across construction and agriculture where superior impulse performance is mandatory, but the pressure requirement does not reach the absolute peak threshold of the 4SH. Both hoses deliver superior impulse performance and excellent oil, abrasion, and weather resistance.

 

Industrial Hydraulic Hose Solutions: How EN856 4SP/4SH Handles Heavy-Duty Machinery

 

The industrial hydraulic hose defined by the en856 4sp/4sh standard provides comprehensive solutions for handling the immense pressures and abrasive conditions inherent in heavy-duty machinery across sectors like mine hydraulic supports, engineering construction machinery, and mining equipment.

The core mechanism enabling this performance is the four alternating layers of spiraled, high-tensile steel wire reinforcement. This dense steel wire winding reinforcement layer provides the fundamental strength required to withstand high pressures and, crucially, offers superior impulse performance. Heavy-duty machinery constantly subjects hydraulic lines to rapid pressure cycling, or impulses. The tightly wound, spiraled structure ensures the hose can reliably endure a large number of these cycles, preventing failure from material fatigue. The ability to manage these high impulse loads ensures operational reliability and significantly maximizes the lifespan of the hose in demanding mechanical systems.

Furthermore, the hose is designed for all-environment durability. The outer rubber layer is an excellent synthetic rubber compounded to be corrosion and oil resistant, resistant to exposure to various environments, precipitation and uv radiation. Heavy machinery often operates in conditions with spilled petroleum-based fluids, UV exposure, and abrasive materials. This robust cover acts as a critical shield, protecting the underlying steel wire reinforcement from physical and chemical damage, preventing premature corrosion or structural degradation.

Internally, the tube is made of oil-resistant synthetic rubber (nitrile), ensuring broad compatibility with a variety of hydraulic oils including petroleum-based fluids and biodegradable hydraulic fluids like vegetable oils and synthetic esters. This robust fluid compatibility, coupled with the extreme pressure capability and superior external protection, makes the en856 4sp/4sh hose a definitive solution for maintaining safety and efficiency in all forms of heavy-duty industrial systems.

 

High Pressure Hydraulic Hose Selection Guide for Construction, Mining, and Agriculture

 

Selecting the correct high pressure hydraulic hose for applications in construction, mining, and agriculture requires careful consideration of the extreme pressures, impulse frequency, and environmental compatibility demanded by these heavy-duty sectors. The en856 4sp/4sh hoses are the top solutions designed specifically for these challenging conditions.

The primary selection criterion is the pressure rating and impulse performance. Machinery in these industries—such as cranes, hydraulic supports, and large tractors—generates extremely high pressure and requires hoses that can withstand a high number of impulse cycles. The 4SP/4SH hoses, reinforced with four layers of high-tensile steel wire spirals, provide the necessary strength to contain these pressures and are tested for superior impulse performance, ensuring operational reliability and long service life in systems that demand constant, high-force activation. For the absolute highest pressure requirements, the 4SH variant should be chosen, as its dimensional optimization gives it a slightly higher pressure bearing capacity.

The secondary, but equally vital, criterion is environmental compatibility. Equipment in these sectors is exposed to extreme weather, temperature variations, and corrosive substances. The selected high pressure hydraulic hose must have a robust outer cover that is oil, abrasion, and weather resistant. The hose's synthetic rubber outer layer protects the underlying steel wire reinforcement from exposure to precipitation, UV radiation, and mineral oils, which are common at job sites. The tube material must also be oil-resistant synthetic rubber to ensure seamless delivery of the petroleum-based hydraulic fluids used in the machinery.

Finally, while strength is key, the hose should also offer manageable flexibility. The en856 4sp/4sh hoses, despite their spiral wire layers, are noted as being highly flexible for their pressure class. This makes them easier to install and less prone to kinking or bending stress-related failure, which is a major factor in reducing changing hydraulic hose frequency, thereby improving machine uptime and safety on site.