Why is DIN EN856 4SP/4SH the "protector" of heavy machinery in ultra-high pressure environments?

In modern industry, especially in mining machinery, large excavators, and heavy lifting equipment, hydraulic systems endure extremely high instantaneous impact forces and continuous high-pressure loads. Ordinary steel wire braided hoses often burst under such conditions due to "fatigue wear."

We will analyze in depth why DIN EN856 4SP and 4SH spiral hoses are the inevitable choice for high-end equipment.

I. Core Technology: Steel Wire Spiral vs. Steel Wire Braided

Structure: Ordinary hydraulic hoses (such as R1AT/R2AT) mostly use a braided structure, while DIN EN856 4SP/4SH uses a four-layer high-strength steel wire spiral process.

Technical Difference: The spiral structure maintains parallel angles between the steel wires, resulting in more even stress distribution on each layer of wire when subjected to internal high pressure.

Impact Resistance: Compared to braided hoses, spiral hoses is less prone to wire friction and breakage when facing frequent "pressure impulses," thus greatly reducing the risk of tubing burst.

II. 4SP vs. 4SH: Which is the True "Pressure King"?

Choosing DIN EN856 4SP/4SH spiral hoses is not just selecting a component, but also taking out "safety insurance" for expensive heavy machinery.