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Hydraulic hose and crimp fittings
Our hydraulic hoses and crimp fittings ensure the safe transfer of hydraulic fluids under pressure and guarantee a reliable, leak-free connection within the system. Learn more...
A selection of hydraulic hoses
1 to 16 (from a total of 817)
Whether braided hoses for medium and high pressure, robust spiral hoses for extreme loads or universal hoses – with us you will find the right solution for every application. Thanks to materials such as NBR, EPDM, PTFE or stainless steel fittings, our components are optimized for the most diverse media, pressures and application areas. With our hydraulic hose configurator you can assemble individual hoses to measure or choose from our range of ready-made hoses in various nominal diameters, connection variants and pressure stages. For self-assembly we additionally offer bulk goods, fittings and hose presses. This way you always get the optimal solution for industry, construction and agricultural machinery as well as special applications.
Hydraulic Hoses & Press Fittings – Frequently Asked Questions
What are hydraulic hoses and press fittings and what are they used for?
Hydraulic hoses and press fittings are central components of modern hydraulic systems. Hoses transport hydraulic fluids under pressure, while press fittings ensure a secure and leak-proof connection between hose and hydraulic system. Together they enable precise control and power transmission – in mobile applications such as agricultural machinery and excavators as well as in stationary applications such as machine tools, presses or robotics.
What are the main components of hydraulic hoses and fittings?
Hydraulic hoses have a multi-layer construction:
- Inner tube: Chemically resistant, usually made of nitrile, polyamide or polyester.
- Reinforcement: Textile or steel wire braids, possibly glass or carbon fibers – determines pressure resistance and flexibility.
- Outer cover: Abrasion, oil and weather resistant, usually made of polyamide or polyurethane.
Press fittings are usually made of steel or stainless steel and are permanently pressed onto the hose with special tools. Reuse after pressing is excluded.
What different types of hydraulic hose reinforcements are there and what applications do they have?
- Single-layer reinforcement: One textile or steel wire layer. Flexible, lightweight, for low-pressure systems.
- Multi-layer reinforcement: Multiple layers of textile or wire. Higher pressure resistance, less flexible. Ideal for medium pressure.
- Spiral reinforcement: Multiple spiral wire layers. Very high pressure resistance, robust, but stiffer. For high pressure, construction machinery and dynamic loads.
What advantages do hydraulic hoses offer compared to rigid lines?
- High flexibility: Easier installation, especially with moving parts.
- Vibration and shock dampening: Protection against material fatigue.
- Easy assembly: Quick and uncomplicated.
- Standardization: Uniform sizes facilitate replacement and maintenance.
How do you select the right hydraulic hose?
Important selection criteria:
- Pressure range: Must withstand system pressure including reserve.
- Medium: Hose material must be compatible with hydraulic fluid.
- Temperature range: Consider environment and medium.
- Environmental conditions: Abrasion, UV, moisture, chemicals.
- Bend radius & flexibility: Must fit the installation.
- Standards & regulations: Compliance with DIN/ISO standards.
What is the significance of inner tube material selection in relation to hydraulic fluid?
- Nitrile rubber (NBR/HNBR): Standard for mineral oil-based oils. HNBR also for synthetic oils and higher temperatures. Not suitable for water-based media.
- EPDM: For water-based and glycol-containing media. Unsuitable for oil and fuel.
- PTFE (Teflon): Very chemically resistant, wide temperature range. Ideal for aggressive media such as phosphate esters.
- Viton (FKM): For fire-resistant, synthetic or aggressive hydraulic fluids and high temperatures.
When in doubt, the safety data sheet of the hydraulic fluid should be checked.
How are hydraulic hoses correctly crimped and assembled?
Assembly is carried out with special crimping machines according to manufacturer specifications:
- Fitting must align exactly at the hose end.
- After crimping, the diameter of the crimp sleeve must be checked.
- Improper crimping poses safety risks.
- Reuse of crimped fittings or hoses is inadmissible.
What maintenance and inspection intervals apply to hydraulic hose assemblies?
- Inspection after assembly: Immediate function check before initial operation.
- Regular inspection: At least annually by qualified person. Shorter intervals under harsh operating conditions.
- Extraordinary inspection: After accidents, collisions, overheating or long standstills.
- Replacement interval: Maximum 6 years (including 2 years storage). Under extreme conditions often shorter, e.g. 2 years.
Extension beyond 6 years is only permissible with risk assessment and shortened inspection intervals.