SAE100 R1AT vs R2AT: Reinforcement, Pressure, and Application Differences
The main difference is reinforcement: SAE 100R1AT has one braided steel-wire layer, while SAE 100R2AT has two. The extra reinforcement generally allows R2AT hose to handle higher working pressure at the same nominal size, but it may also be heavier and less flexible. Neither type is automatically the better choice: select by the system’s required pressure, hose size, routing, operating conditions, and the applicable product specification. Pressure ratings vary by size and manufacturer, so verify the rating for the exact hose before ordering or installation.
You can find more information on our web, so please take a look.
Quick comparison
Both hose types are used to convey hydraulic fluids in equipment and industrial systems. In their common construction, each has an oil-resistant synthetic-rubber tube, steel-wire reinforcement, and an outer cover intended to protect the hose from its operating environment. The key distinction is the number of wire-braid layers, which affects pressure capability and can influence handling and installation.
| Feature | SAE 100R1AT | SAE 100R2AT |
|---|---|---|
| Reinforcement | One braided steel-wire layer | Two braided steel-wire layers |
| Pressure suitability | For applications within the size-specific R1AT working-pressure rating | For applications requiring a higher size-specific rating where R2AT is approved |
| Typical selection reason | Lower-pressure requirements or a preference for a simpler, often lighter construction | Higher pressure requirements within the hose’s rated limits |
| Important check | Confirm size, working pressure, temperature, fluid compatibility, fittings, and the applicable standard | |
How reinforcement affects performance
One braid versus two
In R1AT hose, one layer of braided steel wire reinforces the rubber tube against internal pressure. R2AT uses two braided wire layers, providing more reinforcement for pressure service. More reinforcement does not mean that R2AT can be used at any pressure: the hose still has a maximum rated working pressure that depends on its size and product specification.
The extra wire can affect outside diameter, mass, and bending behavior, but the actual differences are product-specific. Avoid assuming that every R2AT hose is too stiff for tight routing, or that every R1AT hose is more flexible. Check the manufacturer’s dimensions and minimum bend radius for the exact diameter, and design the hose path to avoid kinking or excessive bending at the fittings.
Pressure ratings depend on size
A useful comparison must use the same nominal inside diameter and equivalent product specifications. As illustrative examples from common product tables, a 1/2-inch hose may be listed around 160 bar for R1AT and 275 bar for R2AT; a 1-inch hose may be listed around 90 bar and 165 bar, respectively. These figures are examples, not universal ratings: confirm the exact values on the supplier’s data sheet and hose marking.
Do not select a hose using only a system’s normal operating pressure. Include the maximum expected pressure, pressure surges, temperature, and the requirements of the equipment or applicable standard. The hose assembly’s rating is also affected by its fittings and assembly method, so confirm that the complete assembly—not just the hose tube—meets the system requirement.
Application suitability
When R1AT may be suitable
R1AT may be a suitable option when the required pressure is within its rating for the selected size and the equipment specification permits it. Buyers may consider it for hydraulic lines in machinery or industrial equipment where a single-wire-braid hose meets the pressure, fluid, and environmental requirements. A lower reinforcement count can be relevant when comparing weight, routing, and cost, but these benefits should be confirmed against actual product data rather than assumed.
You will get efficient and thoughtful service from Hengshui Xinchi Hose Manufacturing Co., Ltd..
When R2AT may be suitable
R2AT is often considered when the application requires a higher working-pressure rating than a same-size R1AT option can provide. It may also be specified where the equipment design or replacement documentation calls for a two-wire-braid hose. Before substituting R2AT for R1AT, check compatibility with fittings, hose routing, crimp specifications, and available installation space.
Operating temperature and environment
Many products in these hose families are listed for operating temperatures up to 100°C, with lower limits and fluid-specific conditions set by the manufacturer. Treat this as a product-dependent reference, not a guarantee for every hose or every fluid. Also check cover resistance to abrasion, weather, ozone, and other site conditions, as well as the compatibility of the tube with the hydraulic fluid in use.
Buyer selection framework
- Confirm the required size. Record the inside diameter, connection type, and routing space. Correct sizing supports the equipment’s flow requirements and helps avoid selecting a hose solely by its outside appearance.
- Check pressure at the selected size. Compare maximum system pressure and expected surges with the hose’s stated working pressure. Do not use burst pressure as a working-pressure target.
- Verify the complete assembly. Match hose, fittings, and assembly requirements. A hose with an adequate rating does not make an incorrectly matched or assembled connection suitable.
- Review service conditions. Confirm fluid compatibility, operating temperature, bend radius, movement, and exposure to abrasion or weather. These factors can rule out an otherwise adequate pressure rating.
- Confirm documentation and replacement requirements. For maintenance purchases, compare the existing hose marking and equipment documentation. If the original specification is unclear, provide the supplier with measurements and operating details rather than making an unsupported substitution.
Common mistakes to avoid
One frequent mistake is treating “two-wire” as an automatic upgrade for every system. R2AT can be unsuitable if its dimensions, bend requirements, fittings, or approved equipment specification do not match the installation. Another mistake is comparing pressure ratings across different hose sizes or product series, which can create a misleading impression of performance.
Buyers should also avoid choosing based only on purchase price. A lower initial quote does not establish that a hose is compatible with the operating pressure, fluid, or environment. Request the size-specific technical information and compare equivalent constructions, fittings, and documentation before placing a volume order.
Cost, lead time, and sourcing considerations
Price and availability depend on factors such as hose diameter, construction, requested length, fitting configuration, order quantity, and shipping destination. R2AT’s additional reinforcement may influence material use and handling, but the actual price difference should be confirmed by quotation rather than inferred from construction alone. Lead time can also vary with stock status and any requested assembly or customization.
For a sourcing inquiry, provide the required hose type, inside diameter, working pressure, fluid, temperature range, length, fittings, quantity, and destination. If you are comparing R1AT and R2AT because the existing specification is uncertain, share the equipment requirement or hose marking so the supplier can help identify what information still needs verification.
Key takeaways and recommendation
- R1AT uses one steel-wire braid; R2AT uses two.
- R2AT commonly offers a higher working-pressure rating at a matching size, but exact ratings vary by product and diameter.
- Choose by verified working pressure and full operating conditions—not reinforcement count alone.
- Confirm hose, fittings, assembly, dimensions, and equipment requirements as a complete system.
In short, choose SAE 100R1AT when its verified size-specific rating and construction meet the application requirements; choose SAE 100R2AT when the system requires its higher rated pressure and the installation supports its dimensions and assembly. Before ordering, compare the supplier’s data sheet with your equipment specification and confirm the complete hose assembly rating. Hengshui Xinchi Hose Manufacturing Co., Ltd. can review your requested hose type, size, operating conditions, and quantity to support a product inquiry and quotation.