Hydraulic hoses are critical components in hydraulic systems, used to transmit fluid power under high pressure. These hoses can ensure efficient fluid transfer in harsh conditions and ensure efficient fluid transfer, which is essential for the smooth operation of the hydraulic system.
Its construction (1 or 2 braided and 4 or 6 spiral) and material properties make it more pressure resistant and safe for different applications. Make your business has the smooth operation of various mechanical equipment.
Hydraulic hoses with braided reinforcement layer are particularly common used in hydraulic systems. Braided hydraulic hoses are categorized as R1 and R2. If you're struggling to decide between R1 and R2 hydraulic hoses, this article can help. We'll explain the differences between R1 and R2 hoses, including their construction, performance, and ideal applications, so you can choose the right hose for your system.
Hydraulic Hose Type
Hydraulic hoses come in different types, depending on their construction and reinforcement. These types offer varying pressure ratings, flexibility, and durability.
To facilitate selection, common industry standards, such as SAE (Society of Automotive Engineers) or ISO (International Organization for Standardization), are used for different types of hydraulic hoses.
Single-wire braided hydraulic hoses (such as SAE 100R1) feature a single-wire braid reinforcement. These hoses are suitable for medium-pressure applications requiring flexibility and moderate strength. They perform well in applications such as agriculture and forestry, construction, mining, and other hydraulic systems conveying petroleum and water-based hydraulic fluids.
Double-wire braided hoses (such as SAE 100R2) utilize a double-wire braid for increased pressure resistance, strength, and durability. They are designed for high-pressure environments and heavy-duty applications. They are particularly suitable for use in construction machinery, agricultural machinery, lifting and transport equipment, machine tools, and other applications, conveying fluids such as petroleum, water, and gas.
R1 hoses utilize a single-wire braid reinforcement for medium-pressure applications, while R2 hoses utilize a double-wire braid for higher pressure resistance and improved durability.
Another type of hydraulic hose is the wire spiral hose. This type of hose utilizes multiple layers of spirally wound steel wire to meet user requirements for higher pressures and flexibility. It's typically used in high-pressure hydraulic systems, but it's not as flexible as the R1 or R2 braided hoses.
SAE 100 R1AT One Steel Wire Braided Hose
SAE 100R1 single wire braided hose is a typical high-pressure hydraulic hose suitable for hydraulic lines or general industrial systems. One wire braided hydraulic hose is made of oil-resistant synthetic rubber lining, one wire braided reinforcement material and oil, fuel and wear-resistant rubber cover. High tensile strength wire reinforcement material enables SAE 100R1 hose to support higher pressure than ordinary steel wire.
SAE 100R1 rubber hose should be used with petroleum and water-based hydraulic oils in the temperature range of -40ยฐC to +100ยฐC.
Construction
Single Wire Braid Hoses (e.g. R1): These hoses feature a single wire braid reinforcement, making them suitable for medium pressure applications where flexibility and moderate strength are required.
- Inner Tube: oil-resistant synthetic rubber.
- Reinforcement: one braid of high-tensile steel wire.
- Cover: weather- and oil-resistant synthetic rubber.
Feature
Temperature Range: -40โ to +100โ.
Main Applications: Used for conveying low-medium pressure of oil- or water-based hydraulic fluids.
Standards: ISO 1436 R1AT, SAE J517 100R1 type A or AT
Advantages of using R1 hose:
Cost-effective: Typically less expensive than high-pressure hoses due to simple construction.
Flexibility: Provides good flexibility and easy installation in medium-pressure applications.
Durability: Provides reliable performance for environments where pressure requirements are not high.
Wide availability: Common and widely used in various industries, so it is easy to find replacements.
Potential disadvantages and limitations of using R1 hose:
R1 hoses can withstand lower pressures and are not suitable for high-pressure applications. R2 hoses or spiral wire hoses are more suitable.
They have a limited temperature range and may not perform as well in extreme temperature conditions compared to hoses designed for a wider temperature range. Sinopulse manufactures standard R1 hoses as well as high- and low-temperature (ARCTIC SERIES) R1 hoses. Please consult a Sinopulse hose specialist for details.
They are weaker than R2 hoses. Generally speaking, monofilament braided hoses have lower reinforcement strength than twin-filament or spiral wire hoses and are not suitable for very high-pressure applications.
They have low abrasion resistance. The R1 hose jacket may be less resistant to certain chemicals or harsh environmental conditions, resulting in performance degradation over time. For this reason, Sinopulse offers a highly abrasion-resistant R1 hose - DIN EN853 1SNK.
SAE100 R2AT Two Steel Wire Braided Hose
SAE 100R2 High Pressure Wire Reinforced Hydraulic Hose should be used with petroleum and water based hydraulic fluids in the temperature range of -40ยฐC to 100ยฐC. The double wire braid reinforcement is separated by a synthetic rubber layer with a synthetic rubber cover that is oil, fuel, weather and abrasion resistant. It consists of an oil resistant synthetic rubber inner tube, steel wire reinforcement depending on the hose type, as described below, and an oil and weather resistant synthetic rubber cover. Plies or braids of suitable material may be used on the inner tube and/or on the wire reinforcement to fasten the synthetic rubber to the wire.
Construction
Double-wire braided hoses (such as R2): These hoses have two layers of wire braid for added strength and durability and are designed to handle high-pressure environments and heavy-duty applications
- Inner Tube: oil-resistant synthetic rubber.
- Reinforcement: two braids of high-tensile steel wire.
- Cover: weather- and oil-resistant synthetic rubber.
Feature
Temperature Range: -40โ to +100โ
Main Applications: Used for conveying Medium-high pressure of oil- or water-based hydraulic fluids.
Standards: ISO 1436 R2AT, SAE J517 100 R2 type A or AT
Advantages of using R2 hose:
High Pressure Resistance: Capable of withstanding higher pressures than R1 hose, suitable for more demanding applications.
Enhanced Durability: Double braided wire provides superior strength and resistance to external damage, which extends the life of the hose.
Flexibility: Provides high pressure performance while maintaining good flexibility, allowing for easier installation in a variety of configurations.
Safety: Reduces the risk of hose failure under high pressure conditions, improving safety and reliability of operations.
Potential Disadvantages and Limitations:
R2 hose costs more than R1 hose due to its double braid reinforcement and complex construction. Therefore, R2 hose is generally more expensive than R1 hose.
While it offers greater flexibility, its minimum bend radius is smaller than that of R1 hose, which may limit its installation in very confined spaces. Therefore, Sinopulse offers a more flexible, double-braided 2SC hose. Please contact Sinopulse if you require one.
For the same specifications, it weighs slightly more than R1 hose. The double-layer steel braid increases the hose's weight, which may be a consideration in applications where hose weight is a concern.
Although the standard temperature range is wide, extreme temperatures may still affect performance, especially if the hose is exposed to conditions outside the specified range. For extremely low temperature applications, we recommend our Arctic series R2 hose.
R1 vs R2 Hydraulic Hose Quick View Table
| Feature | R1 Hydraulic Hose (SAE 100R1 / EN 853 1SN) | R2 Hydraulic Hose (SAE 100R2 / EN 853 2SN) |
| Reinforcement | Single high-tensile steel wire braid | Double high-tensile steel wire braid |
| Pressure Rating | Medium pressure, typically 1,000โ3,000 psi | High pressure, typically 2,000โ5,000 psi |
| Flexibility | More flexible, smaller bend radius (โ 4โ6 ร hose diameter) | Less flexible, larger bend radius (โ 5โ8 ร hose diameter) |
| Durability | Standard durability, reliable for moderate use | Higher durability, resistant to pressure spikes and abrasion |
| Temperature Range | -40ยฐC to +100ยฐC | -40ยฐC to +100ยฐC |
| Applications | Agriculture machinery, automotive lifts, light construction, manufacturing (medium pressure systems) | Heavy construction equipment, mining, oil & gas, high-pressure industrial machinery |
| Cost | More economical, budget-friendly option | Higher cost due to extra reinforcement and strength |
| Standards | ISO 1436 R1AT, SAE J517 100R1 | ISO 1436 R2AT, SAE J517 100R2 |
When to Choose R1 Hose
Medium-Pressure Applications: R1 hoses are ideal for medium-pressure (typically up to 3000 psi) hydraulic systems. They are ideal for applications where pressure requirements are modest and do not exceed the rated capacity of the hose.
Agriculture: Used in hydraulic systems of tractors and other farm equipment.
Construction: Applied to hydraulic machinery such as excavators, backhoes, loaders, etc.
Manufacturing: Used in hydraulic presses, conveyors, and other machinery.
Automotive: Found in hydraulic systems of automotive lifts and machinery.
Cost-Conscious Projects: R1 hoses are more cost-effective than high-pressure hoses due to their simpler construction with single-wire braid. R1 hoses are a good choice for projects with limited budgets but still requiring reliable performance.
Flexibility Needed: Where flexibility and ease of installation are critical, R1 hoses are designed for good maneuverability and a relatively small bend radius, making them suitable for applications with limited space or complex routing.
When to Choose R2 Hose
High-Pressure Applications: R2 hoses are designed to handle higher pressures, typically up to 5000 psi. They are essential in hydraulic systems where high pressure is often required, such as heavy machinery, construction equipment, and high-pressure industrial processes.
Construction: Essential in hydraulic machinery such as excavators, bulldozers, and cranes, as high-pressure operation is standard for these machines.
Mining: Used in mining equipment such as drills, loaders, etc. that operate under high pressure.
Oil and Gas: Applied to hydraulic systems of drills and other equipment that require high-pressure hoses.
Manufacturing: Used in hydraulic presses and heavy machinery that require higher-pressure capabilities.
Durability Requirements: When the application requires superior durability and strength, the R2 hose's double braided reinforcement layer provides increased resistance to pressure and external damage. This makes the R2 hose suitable for environments where the hose is subject to severe wear and tear.
High-Pressure Environments: For situations where operation is in harsh conditions or where the hydraulic system is subject to high pressure, the R2 hose provides better performance and safety due to its rugged construction and higher pressure rating.
Factors to consider when choosing between R1 and R2:
Before choosing between R1 and R2 hoses, you should know yourย hydraulic system working pressure. For medium pressure application, R1 hydraulic hoses are a good choice, offering both low cost and flexibility. For high-pressure applications, choose R2 hoses.
R1 hoses are designed to medium pressure application, pressure range from 1,000 to 3,000 psi (pounds per square inch).
R2 hydraulic hoses can withstand higher pressures than R1 hoses. Their pressure ratings typically range from 2,000 to 5,000 psi (pounds per square inch)
Then, determine whether flexibility or strength is more important.
R1 hoses offer greater flexibility, while R2 hoses offer greater strength and durability.
R1 hoses use single wire braid construction, offering flexibility and bendability. The minimum bend radius for R1 hoses is 4 to 6 times the hose diameter.ย This flexibility makes R1 hoses suitable forย movement and maneuverability applications.
Although R2 hoses have double steel wire braid construction, they still offer good flexibility, but less flexible than r1. The minimum bend radius is typically approximately 5 to 8 times the hose diameter.
Your budget and needs will determine which hydraulic hose you should buy. R1 hoses are more cost-effective but less suitable for high-pressure environments, while R2 hoses offer greater performance at a higher cost.
Conclusion
Selecting the right standard hydraulic hose is crucial to ensuring the long-term smooth operation of your hydraulic system. R1 and R2 hoses differ in structure, pressure tolerance, and flexibility, resulting in different uses. Choosing the right hose type for your specific needs can improve the efficiency and safety of your hydraulic system. Therefore, before making a final decision, consult a hydraulic hose expert or supplier to understand your specific needs and select the most suitable hose to keep your hydraulic system running smoothly.
FAQ
What are differences between R1 and R2 hydraulic hoses?
The 1 and R2 hoses main difference is their reinforcement layer different, which affects their working pressure, bend radius, and cost. R1 hydraulic hoses have single-layer steel braided reinforcement layer, are more flexible, and are low-cost, suitable for medium-pressure hydraulic systems. R2 hydraulic hoses is double-layer steel braided, which is less flexible and much more costly, but higher pressures and offering increased durability.
Can I use R1 hoses in high-pressure systems?
No, R1 hoses can not be used in high-pressure applications. If you force the R1 onto high-pressure equipment, there is a risk of the hose bursting.
What are the applications for R1 hydraulic hoses?
R1 hoses are generally used in agricultural machinery, construction equipment, and industrial machinery, and some medium-pressure applications
Can I replace R2 hose to R1 hose?
No. Replacing R2 hose to R1 hose is unsafe because the R1 hose is a medium pressure hose, it cannot withstand high working pressure of the R2 hose. Once replace R2 hose to R1 hose, it could cause the hose to burst, impacting the normal hydraulic system operation.
What should I consider when choosing between R1 and R2 hydraulic hoses?
When choose between R1 and R2, consider four factors: the pressure requirements of your hydraulic system, flexibility, durability, and budget for the hose.