Hydraulic hoses are an integral part of hydraulic systems, and their role is to safely and effectively transfer hydraulic oil and other fluids under high pressure. In the hydraulic industry, choosing the right hydraulic hose is key to ensuring smooth and efficient operation of the system.
SINOPULSE, as a leading hydraulic hose manufacturer, focuses on providing high-quality hydraulic solutions, including two types of high-pressure hoses widely used in the industry - 4SP hose and 4SH hoses. Although these two hoses may be similar in appearance, their differences in design precision, structural reinforcement, and performance optimization customize their unique application scenarios. In this article, we will take a deep look at the differences between 4SP and 4SH hydraulic hoses, how they meet the needs of different hydraulic systems, and give you a suggestion on how to choose between these two hydraulic hoses, so that you can make the best product choice before purchasing.
4SP Hose
en 856 4sp hoses
4SP hose is an abbreviation for "medium-pressure hoses with four plies of steel wire spiral," which refers to a category of steel wire spiral hydraulic hoses, specifically a four-layer spiral medium-pressure rubber hose.
- Tube: high-quality synthetic rubber compounds.
- Reinforcement: four-spiral high tensile steel wires.
- Cover: abrasion and weather-resistant synthetic rubber.
- Temperature: -40 °C to +125 °C (-40 °F to +212 °F).
- Application: Very high-pressure applications are used for petroleum-based hydraulic fluids. Typically it is used in high-pressure hydraulic systems of heavy machinery, such as construction equipment, mining equipment, and industrial machinery.
The specification of the EN 856 4SP Hydraulic Hose
| Part No. | I.D. | O.D. | W.P | B.P | B.R | W.T | |||
| Dash | Inch | mm | mm | MPa | PSI | MPa | PSI | mm | kg/m |
| -04 | 1/4″ | 6.4 | 18.0 | 45.0 | 6525 | 180 | 26100 | 150 | 0.620 |
| -06 | 3/8″ | 9.5 | 20.8 | 44.5 | 6453 | 178 | 25810 | 180 | 0.730 |
| -08 | 1/2″ | 12.7 | 24.0 | 41.5 | 6018 | 166 | 24070 | 230 | 0.900 |
| -10 | 5/8″ | 15.9 | 27.6 | 35.0 | 5075 | 140 | 20300 | 250 | 1.130 |
| -12 | 3/4″ | 19.1 | 31.8 | 35.0 | 5075 | 140 | 20300 | 300 | 1.480 |
| -16 | 1″ | 25.4 | 39.7 | 28.0 | 4060 | 112 | 16240 | 340 | 1.980 |
| -20 | 1.1/4″ | 31.8 | 50.8 | 21.0 | 3045 | 84 | 12180 | 460 | 2.910 |
| -24 | 1.1/2″ | 38.1 | 57.2 | 18.5 | 2683 | 74 | 10730 | 560 | 3.430 |
| -32 | 2″ | 50.8 | 69.8 | 16.5 | 2393 | 66 | 9570 | 660 | 4.890 |
4SH HOSES
en 856 4sh hoses
The 4SH hose is also a multi-spiral hose but with more reinforcement layers. They are made of four to six layers of high-strength steel wire spirals, making them more robust than the 4SP hose. The additional reinforcement allows the 4SH hose to withstand extremely high-pressure conditions. The design of the 4SH hose also includes four strands of spiral winding, but the steel wire is specially strengthened to allow the hose to be used under high-pressure conditions. The 4SH high-pressure rubber hose is made of high-quality materials, featuring high temperature resistance, corrosion resistance, wear resistance, and flame retardance. At the same time, it also possesses good flexibility, compressive strength, and durability, capable of maintaining excellent performance under various complex conditions. Moreover, the structural design of the 4SH high-pressure rubber hose is reasonable, making it easy to install and maintain, significantly reducing the cost of use. Due to its outstanding performance, the 4SH high-pressure rubber hose is widely applied in various industrial fields. For example, in the petrochemical industry, the 4SH high-pressure rubber hose is used to transport various corrosive liquids; in the machinery manufacturing industry, it is used to connect various hydraulic equipment; in the automotive repair field, it is used to provide coolant for cars. Additionally, the 4SH high-pressure rubber hose is also broadly used in construction, electric power, firefighting, and other fields.
- Tube: high-quality synthetic rubber compounds.
- Reinforcement: four-spiral high tensile steel wires.
- Cover: abrasion and weather-resistant synthetic rubber.
- Temperature: -40 °C to +100 °C (-40 °F to +212 °F)
- Application: suitable for heavy-duty industrial applications where fluids need to be reliably transferred under extreme pressure conditions. It is commonly used in construction machinery, mining equipment, and oil and gas drilling platforms to handle hydraulic fluids such as glycol, mineral oil, fuel, water, and air.
The specification of the EN 856 4SH Hydraulic Hose
| Part No. | I.D. | O.D. | W.P | B.P | B.R | W.T | |||
| Dash | Inch | mm | mm | MPa | PSI | MPa | PSI | mm | kg/m |
| -12 | 3/4″ | 19.1 | 31.8 | 42.0 | 6090 | 168 | 24360 | 280 | 1.476 |
| -16 | 1″ | 25.4 | 38.7 | 38.0 | 5510 | 152 | 22040 | 340 | 1.984 |
| -20 | 1.1/4″ | 31.8 | 46.2 | 32.5 | 4713 | 130 | 18850 | 460 | 2.428 |
| -24 | 1.1/2″ | 38.1 | 53.5 | 29.0 | 4205 | 116 | 16820 | 560 | 2.871 |
| -32 | 2″ | 50.8 | 68.0 | 25.0 | 3625 | 100 | 14500 | 700 | 4.534 |
Main Differences Between 4SP and 4SH Hose
The main differences between 4SP and 4SH hoses are their construction, pressure rating, and outer diameter size. While both hoses can handle high-pressure applications, 4SH hoses have a higher pressure rating due to their additional reinforcement layer. The increased strength of 4SH hoses makes them suitable for extremely demanding hydraulic systems.
DIN EN856 4SP and 4SH can be used in forklifts, hydraulic engines, oilfield extraction machinery, mining/road/construction machinery, and more.
Applications of 4SP Hose
4SP hoses are suitable for a wide range of industries and machinery involving high-pressure hydraulic systems. Some common applications include construction equipment, agricultural machinery, mining machinery, and industrial machinery. These hoses are ideal for systems operating at medium and high pressures.
Applications of 4SH Hose
Due to their excellent strength and ability to handle extreme pressure conditions, 4SH hoses are often used in heavy machinery and equipment. Industries such as mining, drilling, construction, and offshore operations rely on 4SH hoses to meet the stringent requirements of their hydraulic systems.
Conclusion
In summary, the difference between 4SP and 4SH hoses is their construction, reinforcement, and pressure rating. 4SP hoses have excellent flexibility and high pressure resistance, making them suitable for medium and high pressure hydraulic systems. On the other hand, 4SH hoses have enhanced strength to withstand extremely high pressure conditions, making them ideal for heavy machinery and demanding applications.
How to choose between 4SP and 4SH hoses
When choosing a hose for a specific hydraulic system, the right choice is not only about efficiency, but also about safety. 4SP and 4SH hoses, as two high-pressure hoses widely used in the hydraulic field, their selection depends on the following key factors:
1. Application pressure requirements
4SP hose: designed for medium and high pressure applications, suitable for systems that require good pressure resistance but not extreme.
4SH hose: designed to withstand extreme high pressure, suitable for applications that require ultra-high pressure resistance.
2. System working environment
External conditions: If the hydraulic system is exposed to severe environmental conditions, such as high temperature, strong mechanical wear, etc., the additional reinforcement layer of 4SH hose provides better protection.
Bending and flexibility requirements: The complexity of the system configuration and the requirements for the hose bending radius also affect the choice of hose type. 4SP hoses generally provide greater flexibility.
3. Durability and life expectancy
Long-term durability is an important consideration in determining cost-effectiveness. The additional reinforcement layer of 4SH hoses provides a longer service life, especially in high pressure and harsh environments.
4. Cost considerations
Despite the higher initial investment, the enhanced durability of 4SH hoses can reduce long-term maintenance and replacement costs. The initial cost should be weighed against the long-term benefits when making your selection.
5. Manufacturer specifications and recommendations
It is very important to follow the manufacturer's recommendations and specifications. The professional recommendations provided by SINOPULSE are based on extensive industry experience and product performance testing to ensure that the hose you choose fully meets your application needs.
FAQ
Q1: Can I use 4SP hose in high pressure applications?
A: Absolutely. 4SP hose is designed for medium to high pressure hydraulic system applications. Its high flexibility and pressure resistance make it an ideal choice for a wide range of industrial and heavy equipment applications.
Q2: Is 4SH hose more expensive than 4SP hose?
A: Yes, in general, 4SH hose may cost slightly more than 4SP hose due to the additional reinforcement layer and higher pressure rating. However, this additional investment can provide higher performance and safety for systems that need to withstand higher pressure applications.
Q3: If I need higher pressure resistance, can I use 4SH hose instead of 4SP hose?
A: Without a doubt, if your application environment requires ultra-high pressure resistance in the hydraulic system, it is a wise choice to choose 4SH hose. 4SH hose is designed to withstand extreme high pressures and can ensure excellent performance under the most severe conditions.
Q4: Can 4SP and 4SH hoses be used interchangeably?
A: Although 4SP and 4SH hoses can be used in many applications, we strongly recommend following the manufacturer's recommended usage guidelines for specific applications. Each type of hose is specifically designed to suit different pressure levels and environmental conditions, so choosing the right hose is essential to optimize performance and ensure safety.
As your trusted hydraulic solution partner, SINOPULSE is committed to providing high-quality hoses and excellent services. If you have any further questions or needs about our hoses, contact us and our professional team welcomes your consultation and feedback at any time.