Steel wire ropes in port cranes
Port cranes are the backbone of efficient cargo handling at sea, river, and transshipment terminals. Used for loading and unloading containers, bulk cargo, and oversized goods, they operate almost continuously—often 24/7. In these conditions, a steel wire rope must be not only strong, but also resistant to extreme weather and intensive use.
What tasks does the rope perform in a port crane?
- Lifting loads – the main working rope (hoisting rope) carries the weight of containers, big bags, or structural components moved from the quay to the hold and back.
- Trolley travel – ropes responsible for moving the trolley along the jib/boom, along the crane’s travel path.
- Load stabilization and guidance – additional ropes limit container sway during lowering and lifting.
What conditions must a port crane rope withstand?
✔ High working loads, often in multi-sheave reeving systems,
✔ Continuous bending and fatigue stress,
✔ Exposure to sea salt, moisture, and fluctuating temperatures,
✔ Minimal elongation—important for precise container positioning,
✔ Corrosion resistance—galvanized or factory-lubricated ropes are preferred.
Most commonly used ropes for port cranes
- Steel core ropes (IWRC) – maximum strength and stability,
- Non-rotating ropes – ideal for large lifting heights,
- Galvanized or lubricated ropes – extend service life in marine conditions,
- Specialist high-cycle ropes (High Performance Ropes) – for continuous-duty operation.
