Hydraulic hoses are useful as they help transport fluid in the hydraulic system. This system is the backbone of various heavy-duty machinery, i.e., tractors, bulldozers, and excavators. There are different types of hydraulic hoses available, including R1 and R2. However, there are many differences between wire braided R1 and R2 hydraulic hose.
You’ll see many people favor the R2 wire-braided hydraulic hoses. That’s because these hoses are very strong and are capable of high-pressure hydraulic fluids. However, the R1 hydraulic hoses have their place in the market, especially for mild-pressure systems. In this article, I will compare R1 and R2 hydraulic hoses head-to-head. So, let’s get started.
What are Wire Braided R1 and R2 Hydraulic Hose?
Hydraulic hoses must comply with international standards set by various organizations. The purpose of these standards is to ensure hoses are of high quality. This also helps make the quality of hydraulic systems consistent worldwide. SAE (Society of Automotive Engineers) developed the SAE J517 standards.
This standard offers technical guidelines about the specification of 100R-series hydraulic hoses. R1 and R2 braided hydraulic hoses belong to the 100R-series. They are also known as SAE 100R1 and SAE 100R2, respectively. The major difference between R1 and R2 braided hoses is the number of reinforced layers.
R1 hoses with single-wire braiding are weaker. They are only suitable for medium-pressure hydraulic systems. In contrast, the R2 braided hydraulic hoses are stronger because they have two steel braided wires. These braided wires are present in the reinforcement layer (middle). Double steel wire braided in their reinforcement layer makes them withstand high pressure with ease.
It is worth noting that hydraulic hoses are made in three layers. These include the inner tube, the reinforcement layer, and the outer layer (the most external). Among these three layers, the reinforcement layer strengthens the hose. Why? That’s because this is the layer that faces pressure when high-pressure fluid passes through the hose.
Therefore, manufacturers use steel wire braid in the layers to ensure it withstands harsh pressure. These steel wire braids can be one, two, or multiple. If the hose has one steel wire braid, it will be R1. Similarly, if there are 2 steel wire braided, the hydraulic hose will be R2. Due to the number of steel braid wires, another distinction between these hydraulic hoses starts.
Difference Between Wire Braided R1 and R2 Hydraulic Hose
Both R1 and R2 wire-braided hydraulic hoses are used in different applications. Why? The reason is that these hoses differ in strength. In the section below, I will discuss the key differences between these hydraulic hoses. Understanding them will help you choose the best braided hose for you.
1- Construction & Reinforcement
As I said earlier, every hydraulic hose consists of three primary layers. These include:
- Inner tube
- Reinforcement layer
- Outer layer
The inner layer is generally made of synthetic rubber, and it is oil-resistant. The outer layer is also designed to resist shocks and abrasion. Interestingly, this layer of hydraulic hoses is also made with synthetic rubber. These two layers are the same in both R1 and R2 hydraulic hoses. However, the differences lie in the reinforcement layer, which is key to making the hose pressure-resistant.
If the reinforcement layer is weaker, the hose won’t withstand high pressure, and vice versa. Manufacturers use steel wires braided into this layer to improve the hose’s pressure withstand capacity. However, the R1 braided hydraulic hoses only have one wire braid in this reinforcement layer. In contrast, R2 braided hydraulic hoses have two wires braided in this layer. There are more significant differences between these two hydraulics.
2- Pressure Ratings
Pressure rating is generally directly proportional to the strength of hydraulic hoses. Those hoses are stronger and generally capable of withstanding high pressure. R1 wire-braided hydraulic hoses have only a steel wire braid in their middle layer. Having a single wire does not increase its strength or affect its pressure rating.
Therefore, the R1 wire-braided hydraulic hoses have a pressure rating of around 1000–2000 PSI. On the other hand, R2 wire-braided hydraulic hoses are exceptionally strong. They have a reinforcement layer consisting of two steel wire braids. As a result, their pressure rating is higher, around 3000-5000 PSI. In other words, R1 is only good for medium-pressure applications. In contrast, the R2 is suitable for heavy-duty hydraulic systems.
3- Flexibility & Bend Radius
As I said, R1 hydraulic hoses are weaker due to single-wire steel braiding. However, this property makes the R1 hydraulic hose more flexible. You can bend this hydraulic hose easily and keep using it in tight spaces. Additionally, this hydraulic hose has a smaller bending radius. You can move and bend them tightly together, and they won’t break.
On the flip side, the R2 hydraulic hoses are stronger and more rigid due to double-steel-wire braids. This makes these hydraulic hoses less flexible and unfavorable for use in tight spaces. Additionally, these R2 hydraulic hoses have a larger bending radius. You cannot bend these hydraulic hoses too tightly. If you do, the hydraulic hoses may crack and get damaged.
4- Durability & Lifespan
As previously mentioned, both R1 and R2 hydraulic hoses have the same inner and outer layers. This means they have the same abrasion, shock, and wear resistance. However, their middle layers make the difference: R1 has one steel wire braid in the middle, which is a bit weaker. So it can wear over time, especially if used in high-pressure applications.
On the other hand, the R2 hydraulic hoses are very robust due to dual steel wire braid in the reinforcement layers. This layer adds strength to these hydraulic hoses, making them more durable. Even if unexpected pressure spikes, these hoses won’t deteriorate. So they last longer without showing any signs of deterioration.
Quick Highlight: If used appropriately, R1 hydraulic hoses can also offer excellent durability. For example, you should always use R1 hydraulic hoses in medium-pressure applications. That’s what these R1 hoses are made for. The issue arises when these hoses are abused and used in extreme-pressure hydraulic systems.
5- Ease of Installation & Weight
I highly favor R1 hydraulic hoses for ease of installation. Why? That’s because these hoses are very flexible, making them ideal for tight spaces. Their lower bending radius makes them easy to fit even in the most congested spaces. Additionally, R1 hydraulic hoses are very light, which also contributes to their ease of installation.
Conversely, the R2 hydraulic hoses are very challenging to install, especially in tight spaces. The reason is that these hydraulic hoses are very stiff and hard due to the two steel braided wires inside them. Additionally, the R2 hydraulic hoses are heavier, which is another drawback. Remember, even a small installation error can cause these hoses to over-bend and damage them.
6- Cost and Applications
Cost is one of the most significant factors when selecting between R1 and R2 hoses. Interestingly, the R1 hydraulic hoses are cheaper than the R2 hoses. The reason is that these hoses have a single steel wire braiding in the reinforcement layer. So, making these hoses requires less steel, which is expensive.
As a result, the R1 hydraulic hoses are very cost-effective. On the other hand, R2 hydraulic hoses feature two layers of steel wire braids in the middle. This means they require more materials during construction, which increases their cost. The R1 hydraulic hoses are used for low- to medium-pressure applications. The reason is that these hoses are weaker and may break under high pressure.
On the contrary, the R2 hoses are robust and used in high-pressure applications. Here is the table showing the applications of R1 and R2 hydraulic hoses:
| R1 Hydraulic Hose Applications | R2 Hydraulic Hose Applications |
| Tractors | Excavators |
| Agricultural machinery | Mining machinery |
| Light construction equipment | Hydraulic presses |
| Factory automation systems | Oilfield equipment |
| Medium-pressure hydraulic lines | Heavy-duty high-pressure systems |
Advantages & Disadvantages of R1 & R2 Hydraulic Hose
In the section above, I discussed key differences between these two hydraulic hoses. Still confused about which of these two hoses is the best choice for you? Worry not, here are the pros and cons of these hydraulic hoses, helping you know about their capabilities.
Pros and cons of R1 Wire braided Hydraulic Hose
| Pros of R1 Hose | Cons of R1 Hose |
| Flexible & easy to install | Lower pressure capacity |
| Lightweight | Less durable |
| Lower cost | Shorter lifespan in heavy-duty use |
| Suitable for medium-pressure systems | Not suitable for high-pressure applications |
Pros and Cons of R2 Wire Braided Hydraulic Hose
| Pros of R2 Hose | Cons of R2 Hose |
| High-pressure resistance | Less flexible |
| Strong & durable | Heavier |
| Longer lifespan | Higher cost |
| Handles heavy-duty applications | Harder to install in tight spaces |
Conclusion: Which One Should You Choose, R1 or R2 Hydraulic Hose?
The selection between R1 and R2 hydraulic hoses can be confusing, especially if you’re a newbie. Remember, both R1 and R2 hydraulic hoses are different and are suitable for different applications. I recommend choosing R1 hydraulic hoses for applications with low to medium pressure.
These hoses will work fine and save you some bucks, too. Conversely, R2 hoses make sense for high-pressure hydraulic systems. These hoses can perform excellently if the pressure in the hydraulic system spikes suddenly. They are very capable of resisting sudden pressure changes from low to high. In such cases, the R1 hoses may not work properly and burst due to high pressure.