Bulk Hydraulic Hose Wholesaler

What are bulk hydraulic hoses?

Bulk hydraulic hoses typically refer to hydraulic hose bodies supplied in rolls or straight lengths, without pre-assembled fittings. They can be purchased in full rolls or cut to specific lengths. Customers can then further process or crimp the hoses according to their hydraulic equipment and working conditions to create suitable hydraulic hose assemblies.

We can sell not only bulk hydraulic hoses but also hose assemblies, but they are different. Bulk hydraulic hoses offer greater flexibility.

The most significant advantages are:

* Customizable cutting based on actual length, reducing waste.

* Compatible with different standard hydraulic fittings.

* Suitable for on-site repair; if the fittings are reusable and undamaged, only the hose needs to be replaced when it is damaged.

* Lower cost; for large quantities, purchasing hoses and crimping the fittings yourself is more economical than buying complete hydraulic hose assemblies.

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Strongflex offers a range of bulk hydraulic hoses

Strongflex bulk hydraulic hose

1. Product Standards

International standard hydraulic hose models are available, including:

* SAE 100 R1AT / R2AT
* EN 853 1SN / 2SN
* EN 856 4SP / 4SH
* SAE 100 R3 / R6
* EN 857 1SC / 2SC
* SAE 100 R16 / R17
* Thermoplastic hydraulic hoses R7 / R8
* Industrial multi-purpose hydraulic hoses
For more specific information, please see this hydraulic hose page for detailed classifications and descriptions.

2.Construction of Bulk Hydraulic Hoses

The manufacturing process of bulk hydraulic hoses is the same as that of regular hydraulic hoses, and their structural composition is also the same.

Inner Tube: Directly in contact with hydraulic fluid, usually made of high-quality synthetic rubber, requiring excellent oil and pressure resistance.

Reinforcement Layer: Typically composed of 2, 4, or 6 layers of steel wire (braided or spiraled), which acts as the load-bearing structure and determines the hose’s pressure capacity. Some low-pressure hydraulic hoses use braided fibers for reinforcement, such as R3 and R6.

Outer Cover: Protects the inner steel wire layers from abrasion, corrosion, and environmental influences. Usually made of weather-resistant, aging-resistant, and wear-resistant synthetic rubber.

Temperature range: -40°C ~ +100°C (depending on the model), some special hydraulic hose models can be manufactured for high temperatures (maximum operating temperature 135°C) or low temperatures (minimum operating temperature -50°C).

3. Pressure Range of Bulk Hydraulic Hoses

The pressure range of hydraulic hoses varies depending on the inner diameter. Generally, with the reinforcement layer remaining unchanged, the smaller the inner diameter, the higher the pressure the hydraulic hose can withstand. The burst pressure is typically four times the working pressure.

The specific working pressure that a hydraulic hose can withstand can be found in the table below.

EN hydraulic hose working pressure sheet

SAE hydraulic hose working pressure sheet

4. Supply Options

• Supplied in full rolls
• Cut to specified lengths in meters or feet
• OEM supply
• Customized mass production according to customer requirements
• Sold together with hydraulic fittings
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Typical Applications of Hydraulic Hoses

Typical Applications by Field

1. Industrial Manufacturing and Factory Automation
Machine Tools: Used for spindle drive, tool change in tool magazines, fixture clamping, guide rail lubrication, etc.
Injection Molding and Die Casting Machines: Connected to hydraulic cylinders to drive mold closing, injection, ejection, and other actions.
Metallurgical Equipment: Used in rolling mills and continuous casting machines to control roll gap, lifting platforms, hydraulic shears, etc.
Production Lines and Robots: Providing power for fixtures, handling manipulators, and turning mechanisms on automated production lines.

2. Construction Machinery
Excavators: All cylinders for the boom, stick, and bucket, swing motor, and travel motor.
Cranes/Truck Cranes: Boom extension, luffing, and lifting cylinders, outrigger cylinders.
Loaders: Bucket lifting and tilting cylinders, steering system.
Road Rollers, Pavers, Milling Machines: Vibration system, leveling system, travel drive.

3. Agricultural Machinery
Tractors: Lifter control for raising and lowering agricultural implements (plows, harrows, seeders).
Combine Harvesters: Header lifting, grain tank unloading, hydrostatic transmission (HST).
Sanitation and Municipal Vehicles: Working devices for garbage compactors, water trucks, street sweepers, and aerial work platforms.

4. Mining, Petroleum, and Offshore Engineering
Mining Machinery: Underground hydraulic supports, tunneling machines, drilling rigs, mining dump trucks.
Oil and Gas Drilling and Production: Blowout preventers, choke and kill manifolds, wellhead equipment on drilling platforms.
Offshore Engineering: Ship rudders, anchor winches, hatch opening and closing, offshore cranes.

5. Transportation
Automobiles: Power steering system, automatic transmission oil circuit, braking system (some commercial vehicles), active suspension (high-end cars/buses).
Rail Transit: Braking systems of train locomotives, door control of high-speed trains/subways, track maintenance vehicles.

How to Choose Bulk Hydraulic Hoses?

Step 1: Define the Application Conditions (Basis for Selection)

Hydraulic Hose Pressure: Determine the system’s maximum working pressure and potential surge pressure. The selected hose’s rated working pressure (WP) must be higher than the former.

Hose Medium: Identify the fluid being conveyed (e.g., hydraulic oil type, water-glycol, etc.) to ensure compatibility with the hose’s inner layer.

Temperature: Consider both oil temperature and ambient temperature, ensuring use within the hose’s specified temperature range.

Environment: Check for abrasion, UV exposure, chemical contact, etc., to determine if a wear-resistant, weather-resistant, or other special outer layer is needed.

Step 2: Match the hose specifications (key parameters)

Inner Diameter: Select based on system flow rate. Too small an inner diameter will lead to pressure loss and overheating, while too large an inner diameter will increase cost and size.

Type and Layers:

• Low-pressure/Return Line: Fiber-reinforced hoses are suitable.
• Medium to High Pressure (Common): Choose 2-layer steel wire braided hoses (2ST) for a balance of performance and cost.
•  High Pressure, Frequent Pulsation (e.g., excavators, hydraulic hammers): Steel wire wound hoses (e.g., 4SP/6SP) must be used for good fatigue resistance.

Length and Bending: Measure the required length, ensuring that the installed hose does not exceed the minimum bending radius (MBR) specified for the hose, avoiding excessive bending at the ends.

Step 3: Ensure Proper Connectors and Assembly (Bulk Hose Core)

Connector Matching: This is the biggest difference between selecting bulk hose and pre-assembled hose. The correct crimp-on connectors (including type, thread standard, and size) must be selected in conjunction with the equipment interface.

Crimping Capability: You must have or have access to a professional hydraulic crimping machine and the corresponding precise crimping parameters for the hose and connectors. The quality of the crimping directly determines the lifespan and safety of the hose assembly.

Certification and Brand: For critical equipment, choose products from reputable brands that comply with standards such as SAE and GB/T.

Where to Buy Bulk Hydraulic Hoses?

Common Purchase Channels:

1. Authorized Brand Dealers/Agents
Authorized sales points of well-known domestic and international hydraulic brands in various regions can guarantee genuine original products, reliable quality, and provide after-sales service.

2. Large Industrial E-commerce Platforms
For example, Alibaba, Made-in-China, etc., which gather numerous brands and suppliers, offering convenient purchasing and diverse choices. However, it’s important to carefully verify the quality.

3. Local Hardware Markets and Hydraulic Material Specialty Stores
Common models are usually in stock and available for immediate pickup, making them a good option for urgent needs. However, the quality may vary, customization is not available, and the range of models may be limited.

4. Directly Contacting Manufacturers
This is more suitable for bulk purchases and can provide a complete range of bulk hydraulic hoses. Prices are negotiable, and special requirements can be customized. However, it is essential to verify the manufacturer’s production capacity, product quality, and process information. There is usually a minimum order quantity, and delivery times need to be confirmed in advance.

Bulk Hydraulic Hose Wholesaler

In Addition

Strongflex hydraulic hose manufacturer offers a comprehensive line of hoses with inner diameters ranging from 3/16″ to 2″, along with hydraulic accessories and OEM hydraulic components. These abrasion-resistant, high-pressure and high-pulse hydraulic hoses are sold worldwide and meet and exceed SAE/DINEN/ISO standards, ensuring the stability and safety of your hydraulic systems.

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