Kingdaflex manufactures SAE 100R4 hydraulic suction and return hoses designed for low-pressure and vacuum applications in industrial and mobile hydraulic systems.
Standard: SAE J517 100R4
Tube: Oil-resistant synthetic rubber
Reinforcement: Textile braid with steel helix wire
Cover: Oil & weather resistant rubber
Temperature Range: -40°C to +100°C
Application: Hydraulic suction & return line
Vacuum Resistance: Suitable for suction service
Working Pressure: 2 – 21 Bar /35 – 300 Psi.
Safety Factor: 4:1
Custom specifications available upon request.
The inner tube is made of oil-resistant synthetic rubber, ensuring compatibility with petroleum-based hydraulic fluids and lubricants.
The hose reinforcement consists of multiple layers of textile braid combined with a steel wire helix. This structure provides both flexibility and structural support to prevent hose collapse during suction operations.
The outer cover is constructed from oil- and weather-resistant synthetic rubber, offering protection against abrasion, ozone, and environmental exposure.
We provide customized solutions to meet different operational requirements.
Our engineering team supports technical evaluation for demanding hydraulic applications.
SAE 100R4 hydraulic hose is widely used in excavators, loaders, cranes, and other mobile hydraulic equipment for suction and oil return lines. Its vacuum-resistant construction prevents collapse while maintaining flexibility under dynamic operating conditions.
In industrial hydraulic power units and stationary machinery, SAE 100R4 hose is commonly installed as a low-pressure suction or return line. The reinforced structure ensures stable fluid transfer and long service life in continuous production environments.
SAE 100R4 hoses are frequently applied in construction machinery including road equipment and material handling systems. The steel helix reinforcement supports reliable suction performance and prevents hose collapse during demanding site operations.
As a direct hydraulic hose manufacturer, we control production from raw material mixing to final testing, ensuring stable supply and consistent performance.
SAE 100R4 hydraulic hose is a low-pressure suction and return hose defined under SAE J517 standards. It is primarily used in hydraulic systems for fluid suction and oil return lines where vacuum resistance is required.
Unlike high-pressure braided hoses such as 100R1 or 100R2, SAE 100R4 features a textile reinforcement layer combined with a steel wire helix to prevent collapse under vacuum conditions. It is widely used in construction equipment, agricultural machinery, and industrial hydraulic systems.
SAE 100R4 hydraulic hose is primarily designed for low-pressure suction and return line applications in hydraulic systems. It is commonly used to transfer hydraulic oil from reservoirs to pumps or return fluid back to tanks under vacuum or low-pressure conditions.
Unlike high-pressure braided hoses, SAE 100R4 is not intended for pressure transmission lines but for suction service where collapse resistance is critical. The hose structure includes textile reinforcement combined with a steel wire helix, which prevents the hose from flattening under vacuum.
It is widely applied in construction equipment, agricultural machinery, industrial hydraulic units, and mobile machinery systems.
SAE 100R4 hydraulic hose is classified as a low-pressure hose according to SAE J517 standards. The working pressure varies depending on the hose inner diameter, but it is significantly lower than high-pressure types such as SAE 100R1 or 100R2. Its design focus is not maximum pressure handling, but structural stability under suction conditions.
The hose typically operates in return line systems or suction circuits where pressure demand is limited but vacuum resistance is required. Always refer to the manufacturer’s technical specification sheet for precise pressure ratings by size.
Yes, SAE 100R4 hose is specifically engineered for suction and vacuum applications. The integrated steel wire helix reinforcement provides structural strength that prevents hose collapse when negative pressure or vacuum is present in the system. This makes it suitable for hydraulic pump inlet lines and fluid return systems.
The combination of textile braid and steel helix ensures both flexibility and resistance to deformation. When selecting a 100R4 hose for suction service, it is important to verify the vacuum rating and ensure proper installation to avoid excessive bending or restriction.
Standard SAE 100R4 hydraulic hoses typically operate within a temperature range of -40°C to +100°C when used with petroleum-based hydraulic fluids. The actual performance may vary depending on rubber compound formulation and working conditions.
For environments involving elevated temperatures or exposure to harsh climates, customized rubber compounds can be developed to enhance thermal resistance. It is essential to consider both ambient temperature and fluid temperature during selection to ensure long-term durability and stable performance in industrial applications.
The primary difference between SAE 100R4 and SAE 100R1 hydraulic hoses lies in their intended applications and reinforcement structures. SAE 100R4 is designed for low-pressure suction and return lines and includes textile reinforcement with a steel wire helix to prevent collapse under vacuum.
In contrast, SAE 100R1 is a high-pressure hydraulic hose reinforced with a single steel wire braid and used for pressure transmission lines. SAE 100R1 handles significantly higher working pressures, while SAE 100R4 focuses on suction stability and structural support.