Low Pressure Hydraulic Hoses

Low pressure hydraulic hoses are used in hydraulic systems where the required operating pressure is within the rating of the selected hose. They are commonly considered for return lines and other suitable hydraulic circuits in industrial machinery, agricultural equipment and material handling systems.

The correct hose depends on the system pressure, hydraulic fluid, bore size, temperature and installation conditions. A hose that looks suitable may still be unsuitable if its working pressure, bend radius or fluid compatibility does not meet the equipment requirements.

Hydrofit Engineers supplies a range of hydraulic hoses for industrial applications, including SAE 100 R3 and SAE 100 R6. Review the specifications for the individual hose series before selecting a product.

Types of Low Pressure Hydraulic Hoses

SAE 100 R3 Hydraulic Hose

SAE 100 R3 is a textile-reinforced hydraulic hose listed on Hydrofit’s website for hydraulic line applications. Its published construction includes a black, oil-resistant synthetic rubber inner tube, double braided high-tensile yarn reinforcement and a black oil- and abrasion-resistant synthetic rubber cover. The page identifies SAE 100 R3 / DIN EN 854 as the applicable standard.

The hose is available in multiple bore sizes. Working pressure, outside diameter and minimum bend radius vary by size, so the product specification table should be checked before ordering.

SAE 100 R6 Hydraulic Hose

SAE 100 R6 is another option listed in Hydrofit’s low pressure hose range. Its published construction uses a black, oil-resistant synthetic rubber inner tube, single braided high-tensile yarn reinforcement and a black oil- and abrasion-resistant synthetic rubber cover. The product page identifies SAE 100 R6 / DIN EN 854 as the applicable standard.

This hose is available in different bore sizes, with working pressure and minimum bend radius varying according to diameter. Check the size-specific figures to ensure the hose is suitable for the intended hydraulic circuit.

Technical Specifications

The following table summarises the published data for the two hose families. These are overall ranges across the listed sizes, not specifications for every individual hose.

Parameter	SAE 100 R3	SAE 100 R6
Applicable standard listed	SAE 100 R3 / DIN EN 854	SAE 100 R6 / DIN EN 854
Published inside diameter range	6–50 mm	6–25 mm
Reinforcement	Double braided high-tensile yarn	Single braided high-tensile yarn
Inner tube	Black, oil-resistant synthetic rubber (NBR)	Black, oil-resistant synthetic rubber (NBR)
Outer cover	Black, oil- and abrasion-resistant synthetic rubber	Black, oil- and abrasion-resistant synthetic rubber
Published working pressure range	15–87 bar	15–35 bar
Published burst pressure range	60–348 bar	84–140 bar
Approximate temperature range listed	−40°C to +100°C	−40°C to +100°C

Applications of Low Pressure Hydraulic Hoses

Depending on the hose model and its rated working conditions, low pressure hydraulic hoses may be used in:

Hydraulic return lines
Agricultural machinery and tractors
Forklifts and material handling equipment
General industrial machinery
Suitable fluid transfer lines in mobile hydraulic equipment
Hydraulic systems where the selected hose meets the required pressure and fluid compatibility

Not every low pressure hose is suitable for every application. Check the equipment manufacturer’s requirements before choosing the hose.

How to Select the Right Low Pressure Hydraulic Hose

Before placing an order, confirm the following details.

Working pressure: Check the system’s operating pressure and any pressure fluctuations. Use the hose’s rated working pressure, not its burst pressure.
Inside diameter: Match the hose bore to the required flow rate and system layout.
Fluid compatibility: Confirm that the inner tube is suitable for the hydraulic oil or other fluid being used.
Temperature: Check the fluid temperature and the surrounding operating environment.
Bend radius: Follow the published minimum bend radius and avoid twisting or sharp bends during installation.
End connections: Match the hose to compatible fittings and the correct assembly method.

Low Pressure Hydraulic Hose Supplier in India

Hydrofit Engineers supplies hydraulic hose products for industrial and mobile equipment requirements. Based in Chennai, the company serves industrial customers across India.

When requesting a quotation, provide the hose type, inside diameter, required length, working pressure, fluid, temperature and end connection details. If you are replacing an existing hose, its printed markings or a clear photograph can help identify the required specification.

Frequently Asked Questions

What is a low pressure hydraulic hose used for?

It is used in hydraulic circuits where the selected hose’s working pressure and construction meet the system requirements. Return lines and certain industrial or mobile equipment circuits are common examples.

What is the difference between SAE 100 R3 and SAE 100 R6?

The published Hydrofit specifications list double braided high-tensile yarn reinforcement for R3 and single braided high-tensile yarn reinforcement for R6. Their available sizes and working pressure ratings also differ. Select the hose using its specific product data rather than the designation alone.

Can I select a hose using only its pressure rating?

No. The inside diameter, fluid compatibility, temperature, bend radius, fittings and installation conditions also matter. The complete hose assembly must be suitable for the intended application.

Does Hydrofit supply low pressure hydraulic hoses across India?

Hydrofit Engineers is based in Chennai and serves industrial customers across India. Contact the company with your required hose specifications to confirm product suitability and availability.