In excavators, loaders, cranes, mining machinery and die-casting machines, EN856 4SP hydraulic hose is widely used as the standard medium-high pressure line with 4‑layer spiral steel wire, excellent pulse resistance and long service life. LETONE EN856 4SP hose fully complies with international standards, featuring oil resistance, abrasion resistance and weather resistance, operating at -40°C to +100°C.
1. Structure: 4‑Spiral Steel Wire for Stable Performance
Inner tube: black oil‑resistant synthetic rubber, compatible with mineral hydraulic oil, glycol and water-based fluids.
Reinforcement: four layers of high-tensile spiral steel wire, high pressure resistance and excellent pulse life.
Cover: black oil, weather and abrasion-resistant synthetic rubber, ozone & UV resistant.
Temperature range: -40°C to +100°C.
2. Common Sizes
DN10 (3/8"), DN12 (1/2"), DN16 (5/8"), DN19 (3/4"), DN25 (1"), DN32 (1‑1/4"), DN38 (1‑1/2")
Working pressure: 21MPa ~ 35MPa.
3. Typical Applications
Main hydraulic circuits of construction machinery：excavators, loaders, cranes, road rollers
Mining equipment hydraulic systems：drills, shearers, crushers, hydraulic supports
Industrial hydraulic stations：die-casting machines, injection molding machines, forging presses
Tunneling & piling equipment hydraulic lines：shield machines, pile drivers
4. Key Advantages
4‑spiral steel wire structure for medium-high pressure systems
Ultra‑high pulse life for heavy-duty continuous working
Oil, abrasion & weather resistant for harsh environments
Full sizes & high universality for easy replacement
