When it comes to your hydraulic equipment, it's important to make sure you're using the right hoses. Each use case is different, requiring different specifications for size and diameter, fluid type, temperature, and other considerations like flexibility.
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As you assemble or repair your equipment, ensuring that you follow hydraulic hose standards is a vital part of keeping your hydraulic machinery working safely.
Depending on where you are, there are several different national and international hydraulic hose standards with varying measurements, tolerances, and parameters.
For example, the European Norm/Standard (EN) and the International Standards Organization (ISO) both set their hydraulic hose standards, which differ from each other.
In North America, the typical hydraulic hose standards are set by the Society of Automotive Engineers or SAE. This organization provides a series of hydraulic hose standards in the 100R series, defined under SAE Standard J517.
The 100R series hydraulic hose standards differentiate the hoses based on their construction and ideal usage conditions, including temperature, pressure, and fluid type. Before we get into the specifics of each hose, let's take a moment to go over the different parts of a hydraulic hose.
While the specific parameters of every hose are different, they generally define three key aspects of the hose: the tube, the strengthening or reinforcement, and the outer, protective cover.
The tube that runs along the inside of a hydraulic hose is responsible for actually transporting hydraulic fluid. For that reason, it has to be able to withstand constant contact with hydraulic fluid, including both biodegradable and petroleum-based fluids.
Because the hose is the part that comes into contact with the fluid, it also needs to withstand other factors, including extremes in temperature, corrosion, and tension.
While the tube is the part that houses hydraulic fluid, the reinforcement is there to strengthen the line, protecting it from any spikes in pressure that may occur. The higher the pressure in the tube, the more support you'll want to prevent it from bursting or leaking.
Hydraulic hoses come with either textile or steel reinforcement. Textile reinforcement is a woven fabric designed for low-pressure usages, while steel reinforced hoses have either a braided cover around the hose or individual courses of wire wrapped around the tube.
Wire wraps always come in even-numbered layers, with each successive layer wrapped in the opposite direction of the previous layer.
The protective outer layer is known as the cover, and this is the first layer of protection from exterior damage. Usually made from synthetic rubber or textile braiding, the cover helps prevent abrasion and corrosion damage and can provide insulation to prevent the tube from being damaged by external heat, cold, or UV damage.
When choosing the right hydraulic hose, you should first pay attention to any documentation with your equipment. These should specify which hoses are appropriate for your equipment and your particular usage.
However, the documentation may not have all of the information you need; you may be adapting the equipment to a new use or simply have to address a change in conditions. In that case, this guide will help you determine which hose is right for you.
As you choose a hose, you should know the specifics of your situation, including your maximum pressure, normal and extreme operating temperatures, and the nature of your application, such as if your hoses will be used in a vehicle or as part of a permanent installation.
Under each number, you'll find information about the reinforcement, as well as the diameter range, the maximum operating pressure (in psi), and the minimum bend radius.
Unless otherwise noted, all hoses contain a tube compatible with both petroleum- and water-based hydraulic fluids, a rubber cover designed to resist oil and weather exposure, and are suited to operate between -40° and 100°C.
SAE 100R1
Reinforcement: Single braid steel.
Diameter Range: 3/16' to 2'
Max. Operating Pressure: 575 to 3,250 psi
Min. Bend Radius: 3.5' to 25'
Usage: General use high-pressure hydraulic hose.
SAE 100R2
Reinforcement: Two braids steel.
Diameter Range: 3/16' to 2'
Max. Operating Pressure: 1,150 to 6,000 psi
Min. Bend Radius: 3.5' to 25'
Usage: Good for outdoor uses like construction and mining, as well as on mobile equipment.
SAE 100R3
Reinforcement: Two braids textile.
Diameter Range: 3/16' to 1-1/4'
Max. Operating Pressure: 375 to 1,500 psi
Min. Bend Radius: 3' to 10'
Usage: General use as a low-pressure hydraulic hose, including antifreeze and hydraulic oil.
SAE 100R4
Reinforcement: Single or more braid textile with spiral wire.
Diameter Range: 3/4' to 4'
Max. Operating Pressure: 35 to 300 psi
Min. Bend Radius: 5' to 24'
Usage: Typically used as suction and return hoses for hydraulic systems.
SAE 100R5
Reinforcement: Two braids textile with steel braid between. Braids have mildew-resistant compounds to resist wear.
Diameter Range: 3/16' to 3-1/16'
Max. Operating Pressure: 35 to 300 psi
Min. Bend Radius: 3' to 33'
Usage: Meant for medium-pressure applications, used in many automotive situations, including air brakes and power steering systems.
SAE 100R6
Reinforcement: Single braid or spiral textile.
Diameter Range: 3/16' to 3/4'
Max. Operating Pressure: 300 to 500 psi
Min. Bend Radius: 2' to 6'
Usage: General use as a low-pressure hydraulic hose.
SAE 100R7
Tube: Thermoplastic.
Temperature: -40° to 93°C
Cover: Thermoplastic.
Reinforcement: Synthetic fiber.
Diameter Range: 1/8' to 1'
Max. Operating Pressure: 1,000 to 3,000 psi
Min. Bend Radius: 1' to 12'
Usage: Medium-pressure, non-conductive settings where steel reinforcement is not allowed.
SAE 100R8
Tube: Thermoplastic.
Temperature: -40° to 93°C
Cover: Thermoplastic.
Reinforcement: Synthetic fiber.
Diameter Range: 1/8' to 1'
Max. Operating Pressure: 2,000 to 6,000 psi
Min. Bend Radius: 1' to 12'
Usage: High-pressure, non-conductive settings where steel reinforcement is not allowed.
SAE 100R12
Temperature: -40° to 121°C
Reinforcement: Four steel wire spirals.
Diameter Range: 3/8' to 2'
Max. Operating Pressure: 2,500 to 4,000 psi
Min. Bend Radius: 5' to 25'
Usage: High-pressure applications in heavy-duty service settings.
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Additional resources:SAE 100R13
Temperature: -40° to 121°C
Reinforcement: Multiple steel wire spirals.
Diameter Range: 3/4' to 2'
Max. Operating Pressure: 5,000 psi
Min. Bend Radius: 9.5' to 25'
Usage: High-pressure applications, where there is a high likelihood of pressure spikes, like forklifts or construction machinery.
SAE 100R14
Tube: PTFE (Type B hose has conductive inner layer)
Temperature: -54° to 204°C
Reinforcement: Single braid steel.
Diameter Range: 3/16' to 1-1/4'
Max. Operating Pressure: 600 to 1,500 psi
Min. Bend Radius: 1-1/2' to 16'
Usage: High-pressure applications handling superheated fluids.
SAE 100R15
Temperature: -40° to 121°C
Reinforcement: Multiple steel wire spirals.
Diameter Range: 3/8' to 1-1/2'
Max. Operating Pressure: 6,000 psi
Min. Bend Radius: 6' to 21'
Usage: For petroleum-based fluids only. High-pressure applications with steady working pressure, including logging, agriculture, and oilfield equipment.
SAE 100R16
Reinforcement: One or two braids steel.
Diameter Range: 1/4' to 1-1/4'
Max. Operating Pressure: 1,800 to 5,800 psi
Min. Bend Radius: 2' to 8'
Usage: High-pressure applications, where hose needs to be especially flexible.
SAE 100R17
Reinforcement: One or two braids steel.
Diameter Range: 3/16' to 1'
Max. Operating Pressure: 3,000 psi
Min. Bend Radius: 2' to 6'
Usage: High-pressure applications, rated for general industrial purposes.
SAE 100R18
Tube: Thermoplastic.
Temperature: -40° to 93°C
Cover: Thermoplastic.
Reinforcement: Synthetic fiber
Diameter Range: 1/8' to 1'
Max. Operating Pressure: 3,000 psi
Min. Bend Radius: 1' to 10'
Usage: High-pressure applications where non-conductive tubes are required.
SAE 100R19
Reinforcement: One or two braids steel.
Diameter Range: 3/16' to 1'
Max. Operating Pressure: 4,000 psi
Min. Bend Radius: 2' to 6'
Usage: High-pressure applications, rated for general industrial purposes.
While these SAE hydraulic hose standards are widely accepted and used by the industry, SAE does not certify that a product meets them. Ensure that you're purchasing your hydraulic hoses from a reputable vendor to ensure you're getting high-quality merchandise that meets the hydraulic hose standards.
You'll also find that many manufacturers offer products that exceed the SAE hydraulic hose standards, giving you more flexibility when using them in your particular applications. Some hoses have higher temperature or pressure ratings, or they have a tighter bend radius.
Selecting the correct hydraulic hose is critical for ensuring the longevity and performance of your hydraulic systems. Whether you're working on heavy machinery, industrial equipment, or any hydraulic-powered system, choosing the right hose can prevent costly downtime, enhance safety, and improve efficiency. To make the process easier, we'll walk you through a simple guide using the STAMP acronym, a widely recognized method for choosing the perfect hydraulic hose for your application.
The STAMP acronym stands for Size, Temperature, Application, Media, Pressure, and Delivery. Each factor plays an essential role in ensuring your hydraulic system functions smoothly and reliably. Here's what each letter represents and why it matters:
When choosing a hydraulic hose, the size is one of the first things to consider. The inner diameter (I.D.) of the hose determines the flow rate of the fluid passing through it. A hose that's too small can restrict flow, causing increased pressure and potential system failure. On the other hand, an oversized hose may lead to excessive turbulence and energy loss.
It's crucial to know the flow velocity required for your application, as this will help determine the correct hose size. To ensure the right size, refer to the Flow Capacity Nomogram or consult the Dash Numbers system, which uses sixteenths of an inch to indicate the hose's inner diameter.
Both the temperature of the fluid passing through the hose and the surrounding ambient temperature are essential factors. Hydraulic hoses are rated for specific temperature ranges, and exceeding these limits can cause the hose to degrade or burst.
Check the hose specification for the temperature ratings of both the fluid and the ambient environment. For example, Parker hoses feature different temperature ratings depending on the type of fluid used'petroleum-based fluids can withstand higher temperatures compared to water-based fluids. Be sure to select a hose that meets or exceeds the highest temperature your application will encounter.
Understanding your specific application is key to choosing the right hydraulic hose. Ask yourself these questions:
Some applications require hoses designed for specific conditions. For instance, abrasive environments might call for hoses with abrasion-resistant covers, while confined spaces may require hoses with a smaller outer diameter for easier routing. Additionally, make sure your hose meets industry standards, such as SAE, EN, or ISO, to ensure reliability and safety.
The medium conveyed through the hydraulic hose'such as oil, water, or chemicals'plays a significant role in selecting the right hose. Each type of fluid may have different effects on the hose's materials, so compatibility is crucial.
Always refer to the Chemical Resistance Table to confirm that the inner tube, cover, and fittings are compatible with the fluid you'll be using. This ensures the hose will not degrade, erode, or cause contamination of the system.
Hydraulic systems operate under high pressure, so selecting a hose that can withstand both the operating pressure and any pressure spikes is vital. When choosing a hose, ensure that its rated working pressure exceeds the maximum pressure in your system, including any transient pressures caused by surges or spikes.
Remember, a hose assembly's overall pressure rating is determined by the weakest component in the system, whether it's the hose, fittings, or couplings. Always verify the pressure ratings for each part of the assembly.
The final consideration is the delivery, or the flow rate, of the hydraulic fluid. You need to select a hose with an inner diameter that allows for adequate fluid delivery, while maintaining the right pressure and minimizing turbulence. If the flow rate is too high, the system may suffer from pressure loss, causing excessive heat buildup and potential damage to the hose.
Now that you're familiar with the STAMP method, let's look at some specific hose types and applications:
SAE Standard Hoses: These are commonly used across various industries and come in different configurations, such as low-pressure (SAE 100R4), medium-pressure (SAE 100R7), and high-pressure (SAE 100R13) hoses. Depending on your system's needs, you may choose a hose that meets the SAE standard for your required pressure and fluid type.
Low-Pressure Hoses: For applications such as return lines and anti-static lines, SAE 100R4 or 100R6 hoses are ideal. They offer flexibility and durability for lower pressure systems.
Thermoplastic Hydraulic Hoses: These thermoplastic hoses are used in medium-pressure applications, like construction equipment and hydraulic lifts. They are more flexible than rubber hoses and perform well in low-temperature environments.
Spiral Steel Wire Hydraulic Hoses: Spiral Steel Wire Hydraulic Hoses are ideal for high-pressure applications, these hoses are reinforced with multiple layers of steel wire and are perfect for heavy-duty machinery used in agriculture, logging, and mining.
Choosing the right hydraulic hose is essential to ensure the efficiency and safety of your hydraulic systems. By following the STAMP method'Size, Temperature, Application, Media, Pressure, and Delivery'you can confidently select the hose that best meets your application's needs.
Don't forget to always check manufacturer specifications and consult with experts when necessary to avoid any missteps. A well-chosen hydraulic hose can prevent system failures, reduce maintenance costs, and enhance performance over the long term.
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The Society of Automotive Engineers (SAE) sets a series of rigorous standards for hydraulic hoses, ranging from SAE 100R1 to SAE 100R18. These standards specify the construction, performance criteria, and testing requirements to ensure hoses deliver reliable and safe performance under various operating conditions. For instance, SAE 100R1 hoses are designed for low to medium pressure hydraulic applications and feature a single braided steel wire reinforcement, while SAE 100R13 and R15 hoses are constructed for high-pressure scenarios with multiple layers of spiral-wound wire reinforcement. Adhering to SAE standards ensures that hoses can withstand specific pressure ratings, temperature ranges, and fluid types, providing peace of mind in their dependability and durability in demanding applications.
Construction: Single steel wire braid
Applications: Used primarily for medium-pressure hydraulic oil delivery in agricultural, construction, and industrial equipment.
Working Pressure: Up to 225 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Excellent abrasion and weather resistance with good flexibility.
Construction: Double steel wire braid
Applications: Suitable for high-pressure hydraulic oil delivery, widely used in construction, mining, and agricultural equipment.
Working Pressure: Up to 400 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: High-pressure tolerance with superior abrasion and weather resistance.
Construction: Double fiber braid
Applications: Designed for low-pressure hydraulic oil delivery and return lines, commonly used in industrial machinery and agricultural equipment.
Working Pressure: Up to 88 bar (depending on diameter)
Temperature Range: -40°C to +100°C
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Features: Lightweight and highly flexible with excellent bending performance.
Construction: Inner and outer rubber layers with fiber braid and steel wire spiral reinforcement
Applications: Mainly used for low-pressure or suction and return lines, suitable for fuel systems, tanks, and cooling systems.
Working Pressure: Up to 28 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Excellent vacuum and kink resistance.
Construction: Single steel wire braid reinforcement with a textile braided cover
Applications: Used for medium to high-pressure hydraulic oil delivery, commonly found in trucks, industrial, and mobile equipment.
Working Pressure: Up to 210 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Oil and abrasion-resistant with good flexibility.
Construction: Single fiber braid
Applications: Low-pressure hydraulic oil delivery, ideal for agricultural equipment and industrial hydraulic systems.
Working Pressure: Up to 28 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Lightweight with good flexibility.
Construction: Thermoplastic material with fiber braid reinforcement
Applications: Medium-pressure hydraulic and fluid delivery, used in agricultural and industrial equipment.
Working Pressure: Up to 210 bar (depending on diameter)
Temperature Range: -40°C to +93°C
Features: Corrosion and abrasion-resistant, suitable for high and low-temperature environments.
Construction: Thermoplastic material with fiber braid reinforcement
Applications: High-pressure hydraulic oil delivery, widely used in industrial and agricultural equipment.
Working Pressure: Up to 350 bar (depending on diameter)
Temperature Range: -40°C to +93°C
Features: High-pressure tolerance, corrosion resistant, suitable for harsh environments.
Construction: Four layers of spiral steel wire
Applications: Ultra-high-pressure hydraulic systems, suitable for construction, mining, and heavy-duty equipment.
Working Pressure: Up to 420 bar (depending on diameter)
Temperature Range: -40°C to +121°C
Features: Extremely high-pressure tolerance with excellent abrasion and weather resistance.
Construction: Multiple layers of spiral steel wire
Applications: Extremely high-pressure hydraulic systems, used in large machinery and heavy-duty equipment.
Working Pressure: Up to 500 bar (depending on diameter)
Temperature Range: -40°C to +121°C
Features: Highest pressure tolerance, suitable for extreme working environments.
Construction: The SAE J517 100R14 hydraulic hose is constructed with a core tube made of polytetrafluoroethylene (PTFE) or a similar thermoplastic, reinforced with one or more layers of high-strength stainless steel wire braiding.
Applications: It is commonly found in industries such as chemical processing, pharmaceuticals, food and beverage, and aerospace.
Working Pressure: The working pressure for the SAE J517 100R14 hose can vary depending on the diameter, but it is generally capable of withstanding pressures up to 300 bar or more.
Temperature Range: This hose operates effectively within a temperature range of -54°C to +260°C, which is broader than many other types of hydraulic hoses.
Features: Its PTFE core tube provides non-stick properties and minimal friction loss, while the stainless steel reinforcement ensures excellent durability and pressure tolerance.
The International Organization for Standardization (ISO) establishes global standards that promote consistency and quality across hydraulic hose products worldwide. ISO standards cover various aspects of hydraulic hoses, including dimensions, performance, and testing procedures. For example, ISO outlines the requirements for hoses used in high-pressure hydraulic systems, offering a classification based on performance criteria such as impulse pressure and temperature tolerance. By adhering to ISO standards, manufacturers and users can ensure that hoses meet international quality benchmarks, facilitating easier sourcing and replacement of hoses across different regions and applications.
In the European market, the Deutsches Institut für Normung (DIN) provides a set of stringent guidelines for hydraulic hose quality and performance. DIN standards are highly respected and widely adopted, specifying detailed requirements for hose construction, dimensions, pressure ratings, and testing methodologies. For instance, DIN EN 853 and DIN EN 856 define specifications for braided and spiral-wound hydraulic hoses, respectively, ensuring they can withstand high pressures and harsh operating environments. DIN standards emphasize the importance of robust design and consistent performance, making them crucial for applications in industries such as manufacturing, construction, and heavy machinery. Compliance with DIN standards ensures that hydraulic hoses deliver exceptional durability and reliability, meeting the rigorous demands of European and global markets.
Construction: Single steel wire braid
Applications: Suitable for medium-pressure hydraulic applications in agricultural, construction, and industrial equipment.
Working Pressure: Up to 225 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Offers good flexibility and excellent abrasion and weather resistance.
Construction: Double steel wire braid
Applications: Used for high-pressure hydraulic applications in construction, mining, and industrial equipment.
Working Pressure: Up to 400 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Provides high-pressure tolerance and superior durability in tough conditions.
Construction: Single textile braid
Applications: Ideal for low-pressure hydraulic applications, including return lines and industrial systems.
Working Pressure: Up to 24 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Lightweight and highly flexible, suitable for low-pressure applications.
Construction: Double textile braid
Applications: Used for low to medium-pressure hydraulic applications, including return lines and general industrial applications.
Working Pressure: Up to 80 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Provides enhanced flexibility and good abrasion resistance.
Construction: Four layers of spiral steel wire
Applications: Suitable for very high-pressure hydraulic applications in heavy-duty equipment, including construction and mining machinery.
Working Pressure: Up to 450 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Extremely high-pressure tolerance with excellent abrasion and weather resistance.
Construction: Four layers of spiral steel wire
Applications: Used for ultra-high-pressure hydraulic applications in heavy-duty and industrial equipment.
Working Pressure: Up to 500 bar (depending on diameter)
Temperature Range: -40°C to +100°C
Features: Provides the highest pressure tolerance and durability for extreme working environments.
Low-pressure hoses are integral components in hydraulic systems that operate at minimal pressure. These hoses are specifically designed to handle low-pressure conditions while maintaining efficient fluid conveyance. They are essential in applications such as return lines and suction lines, where the pressure is not as intense but still requires reliable performance.
One of the primary roles of low-pressure hoses is to ensure consistent fluid conveyance. In hydraulic systems, return lines carry fluid back to the reservoir after it has been used in the system, while suction lines draw fluid from the reservoir into the pump. Low-pressure hoses must maintain a steady flow of fluid without collapsing or restricting the flow, which is critical for the smooth operation of the hydraulic system. For example, SAE 100R4 hoses are designed with a textile braid reinforcement that provides sufficient support to prevent hose collapse under low-pressure conditions, ensuring continuous and reliable fluid movement.
The construction of low-pressure hoses is tailored to their specific use cases. SAE 100R4 hoses are constructed with a textile braid reinforcement that offers durability and flexibility, making them suitable for low-pressure, high-temperature operations. This construction allows them to withstand the thermal stresses encountered in various industrial environments, such as in hydraulic oil return lines where temperatures can be high. The textile braid also provides a degree of flexibility, making it easier to route the hoses in tight spaces or around obstacles without compromising their structural integrity.
On the other hand, SAE 100R6 hoses feature a single textile braid reinforcement, making them even more flexible and versatile. This increased flexibility is advantageous in general-purpose low-pressure applications where hoses may need to navigate complex layouts or tight spaces. The construction of SAE 100R6 hoses ensures they can handle low-pressure hydraulic fluids, water, and other compatible fluids, making them suitable for a wide range of industrial applications.
Medium-pressure hoses typically involves one or two layers of braided wire reinforcement, which ensures both durability and flexibility, catering to applications that require this balanced performance.
The construction of medium-pressure hoses is a key factor in their performance. Typically, these hoses feature one or two layers of braided wire reinforcement, which provides the necessary strength to handle moderate pressures while maintaining flexibility. The braided wire reinforcement not only enhances the durability of the hose but also allows it to bend and flex without kinking or collapsing, which is crucial for applications that involve complex routing or movement.
For example, a hose with a single layer of braided wire reinforcement offers a good balance of strength and flexibility, making it suitable for applications where moderate pressure and frequent movement are expected. On the other hand, hoses with two layers of braided wire reinforcement provide added strength and durability, making them ideal for more demanding applications where higher pressure and increased wear and tear are factors.
Thermoplastic hoses like SAE 100R7 are well-suited for medium-pressure hydraulic applications. They are commonly used in equipment that requires a balance of flexibility and strength, such as forklifts, aerial lifts, and various types of industrial machinery. The construction of SAE 100R7 hoses includes a thermoplastic inner tube and a synthetic fiber braid reinforcement, providing the necessary strength to handle medium-pressure demands while maintaining flexibility.
For high-pressure applications, SAE 100R8 hoses are the go-to choice. These hoses are designed to withstand higher pressures and are used in more demanding environments, such as in hydraulic tools, injection molding machines, and other heavy-duty equipment. SAE 100R8 hoses feature a thermoplastic inner tube and a high-tensile synthetic fiber braid reinforcement, ensuring they can endure the rigors of high-pressure operations.
Specialty hoses are designed to meet specific requirements beyond standard hydraulic applications. This category includes:
Non-Conductive Hoses: These hoses are engineered for electrical safety, preventing the conduction of electricity, making them ideal for use near electrical equipment or in environments where electrical hazards are a concern.
Extreme Temperature Hoses: Designed to withstand extreme temperatures, both high and low, these hoses are suitable for applications in harsh climates or where thermal resistance is necessary.
Abrasion-Resistant Hoses: Built with robust outer covers to resist wear and tear, these hoses are ideal for environments where they are subject to mechanical damage or rough handling.
Different applications require specific types of hydraulic hoses. It is crucial to match the hose’s construction and properties to the intended use. For instance, hoses used in construction equipment need to withstand high pressures and harsh environments, while those used in agricultural machinery may need to handle moderate pressures but with greater flexibility. Understanding the specific demands of the application helps in selecting the right hose that can provide reliable performance and meet the operational requirements.
Compatibility with the hydraulic fluid is vital to prevent chemical degradation of the hose material. Hydraulic systems use various fluids, including petroleum-based, water-based, and synthetic fluids. The hose material must be resistant to the specific type of fluid it will convey to avoid issues such as swelling, softening, or hardening of the hose, which can lead to leaks and system failures. Ensuring fluid compatibility extends the lifespan of the hose and maintains the integrity of the hydraulic system.
The hose must be able to endure the maximum pressure of the hydraulic system without failure. Hydraulic hoses are rated for different pressure levels, and using a hose with an inadequate pressure rating can result in bursts and safety hazards. It is essential to select a hose with a pressure rating that exceeds the system’s maximum operating pressure to ensure safe and reliable operation. This includes considering both the working pressure and any potential pressure spikes or surges that may occur during operation.