We only use functional cookies for the operation of the webshop. For optimal functioning, please click on accept.
Safe media transfer
The correct hose helps prevent leakage, pressure loss and premature wear in hydraulic and industrial systems.
Hose & Hosefittings
Hoses and hose fittings for hydraulics and industry
Reliable solutions for safely conveying oil, air, water and other media in hydraulic, pneumatic and industrial systems.
Hoses and hose fittings are essential components in many technical systems. The hose conveys the medium, while the fitting provides a secure, leak-free connection to machinery, components or pipework. Correctly matching the hose, fitting and ferrule is essential for reliable operation and a long service life.
Leeuwtechniek supplies hydraulic, industrial, pneumatic and cleaning hoses, together with hose fittings, protective products and related accessories. The correct choice depends on the medium, working pressure, temperature, bend radius, environmental conditions and required connection.
The correct connection
Hose fittings connect hoses to pumps, cylinders, valves, machinery and other components.
Where are hoses and hose fittings used?
- Hydraulic systems
- Mobile machinery
- Agriculture and earthmoving
- Machinery and equipment
- Compressed-air systems
- Industrial cleaning
- Transport and vehicle manufacturing
- Shipbuilding and offshore applications
- Workshop installations
- General industry
Hoses are often used where rigid pipework does not provide sufficient freedom of movement. They can absorb vibration, accommodate movement and connect components that move relative to one another.
Types of hoses and accessories
Hydraulic hoses
Designed to convey pressurised hydraulic oil in mobile and industrial systems.
Multipurpose hoses
Suitable for media such as air, water and light oils, subject to the product specifications.
Pneumatic hoses
Used for compressed air, control and automation in pneumatic systems.
Cleaning hoses
Designed for high-pressure cleaning, industrial cleaning and other demanding applications.
High-pressure hoses
Suitable for systems involving high working pressures and heavy mechanical loads.
Non-skive hoses
Designed for assembly without removing the outer cover, provided they are used with compatible fittings.
Spiral-reinforced hoses
Suitable for suction and delivery applications and available in larger bore sizes.
Hose protection
Protects hoses against abrasion, kinking, heat and mechanical damage.
Plugs and caps
Protect open hoses and fittings against dirt, dust and moisture during storage and assembly.
Hose fittings and connections
Hose fittings form the transition between a flexible hose and a fixed hydraulic or industrial component. The fitting must be compatible with the hose construction, pressure rating, connection and assembly method.
Crimp fittings
Permanently attached to the hose using a crimp ferrule.
Push-in fittings
Suitable for rapid assembly in specific low-pressure and pneumatic systems.
Screw-on fittings
Mechanically installed and suitable for specific hose types.
Flange fittings
Used for larger bore sizes and high-pressure applications.
JIC and ORFS fittings
Common connection types in hydraulic systems.
Low-pressure fittings
Suitable for water, air and general industrial applications.
Hydraulic hose construction
A hydraulic hose generally consists of an inner tube, one or more reinforcement layers and an outer cover. The inner tube must be compatible with the medium. The reinforcement withstands system pressure, while the outer cover protects against abrasion, weathering and mechanical damage.
| Component | Function | Key consideration |
|---|---|---|
| Inner tube | Conveys the medium | Chemical and thermal compatibility |
| Reinforcement layer | Withstands system pressure | Working pressure, pressure surges and fatigue |
| Outer cover | Protects the hose | Abrasion, heat, ozone and environmental exposure |
Internal diameter, flow velocity and pressure drop
An undersized hose increases flow velocity and pressure drop. This can generate heat and reduce system efficiency. An oversized hose may be unnecessarily heavy, expensive and difficult to install.
Select the hose diameter based on the required flow rate, line length, medium and function of the line. Suction, pressure and return lines may each require a different flow velocity.
Bend radius and hose length
Every hose has a minimum bend radius. Bending the hose more tightly can damage the reinforcement and cause premature failure. Do not install a hose under tension between two connection points, and avoid sharp bends immediately behind the fitting.
Allow for movement, pressure changes and changes in length during operation. Where necessary, use elbow adaptors, hose guides or additional length to install the hose without stress.
Assembling hoses and fittings
A reliable hose assembly starts with clean components and the correct combination of hose, fitting and ferrule. Follow the manufacturer's assembly data and crimping specifications. An incorrect crimp diameter can cause leakage, fitting ejection or hose damage.
After assembly, check the hose length, alignment, crimp diameter and condition. Clean the inside of the assembly where the application demands a high level of system cleanliness.
Inspection and replacement
- Check for leakage and weeping
- Look for cracks and abrasion
- Inspect fittings for corrosion
- Check for kinks and deformation
- Look for exposed reinforcement
- Replace damaged hoses promptly
Hoses are wear components. Replace a hose if you identify damage, leakage, blistering, significant ageing or deformation. Do not wait until the hose fails completely.
Frequently asked questions about hoses and hose fittings
How do I select the correct hydraulic hose?
Consider the working pressure, medium, temperature, internal diameter, bend radius, connection type and environmental conditions.
What does non-skive mean?
In a non-skive system, the hose's outer cover does not need to be removed before assembly, provided the correct hose and fitting are used together.
Can I combine fittings from different hose systems?
Only if the manufacturer expressly permits it. The hose, fitting and ferrule must be designed and approved to work together as a system.
When should a hydraulic hose be replaced?
Replace it if there is leakage, cracking, abrasion, deformation, fitting corrosion or visible damage to the reinforcement.
Why is the bend radius important?
A bend radius that is too small places excessive stress on the reinforcement and can significantly shorten the hose's service life.
How can I prevent contamination during assembly?
Keep all components sealed, clean the hose after cutting or processing, and use protective plugs and caps.
Ordering hoses and hose fittings from Leeuwtechniek
Leeuwtechniek supplies hoses, hose fittings, ferrules, protective products, plugs, caps and related hydraulic components for a wide range of applications.
Always consult the product specifications and assembly data. If you are unsure about working pressure, material, fitting, crimp dimensions or application, Leeuwtechniek can help you select a suitable combination.
Hoses and fittings for reliable fluid and air transfer.
Explore hydraulic, cleaning, pneumatic and multipurpose hoses, matching hose fittings and protective products for safe, reliable hose assemblies in mobile equipment and industrial applications.