Hydraulic Hose Failure Analysis & Solution for Port Crane

Hydraulic Hose Failure Analysis Solution for Port Crane

1. Challenge: Unexpected Hydraulic Failure in Critical Equipment

A main pressure hose on the boom of a port container crane's grapple suddenly burst during continuous, high-intensity operations. This caused significant hydraulic oil leakage, loss of system pressure, and forced a complete work stoppage, severely impacting terminal productivity.

2. Root Cause Analysis

Our engineering team's inspection of the failed hose identified key issues:

• High-Pressure Pulsation: The frequent opening/closing and lifting of the grapple generated intense pressure spikes, exceeding the system's rated working pressure.

• Constant Flexing and Abrasion: The hose was subjected to continuous bending and slight abrasion against metal structures on the boom.

• Inadequate Hose Specification: The original hose lacked the necessary endurance for such a demanding dynamic application, particularly in pulse resistance and flex fatigue life.

3. The Hongruntong Solution

We provided a custom solution with our High-Pressure Steel Wire Reinforced Hydraulic Hose:

• Robust Construction: Multi-spiral steel wire reinforcement ensures superior pressure containment (working pressure up to 40MPa+) and excellent pulse resistance.

• Advanced Compound: A specialized synthetic rubber inner tube offers optimal compatibility and resistance to hydraulic oil, while the outer cover is engineered for maximum abrasion, weather, and ozone resistance.

• Precise Customization: Hoses were custom-cut and fitted with the correct ends (e.g., 24° cone or flange) to ensure a perfect fit with optimal bend radius, eliminating installation stress.

4. Result Performance

After installing Hongruntong's hydraulic hose, the crane has successfully operated for over 18 months without any further hose-related failures. The client reported enhanced operational stability and reduced unplanned downtime, confirming the solution's reliability and cost-effectiveness.

Key Takeaway from Hongruntong

For hydraulic systems in dynamic applications (construction machinery, deck machinery, port equipment), selecting a hose based solely on static working pressure is insufficient. Key performance metrics like pulse cycle endurance, minimum bend radius, and outer cover abrasion resistance are equally critical for reliable, safe, and long-lasting operation.

Facing a similar hydraulic challenge? Contact the Hongruntong Marine technical team. We leverage over 30 years of manufacturing expertise to provide the right solution for your application.