Port and ship cranes are pieces of equipment that operate intensively and continuously in container loading/unloading and on-ship lifting operations. In this article, we answer the most frequently asked questions about port/ship crane ropes.
1. What properties should a port crane rope have?
Due to continuous, heavy use, it requires high fatigue resistance, corrosion resistance against seawater (galvanized or stainless), and generally a 6×36 or 8×36 IWRC construction.
2. Is ship crane rope the same as port crane rope?
Although they have similar requirements, ship cranes (deck cranes) are more compact and operate in environments constantly exposed to salt water, so stainless or heavily galvanized ropes are preferred.
3. What diameter should container crane (STS crane) rope be?
Large container cranes (STS – ship-to-shore) generally use high-tonnage ropes in the 28-44 mm range.
4. How often is port crane rope replaced?
Since usage intensity is very high at ports operating 24/7, replacement every 1-2 years and monthly periodic inspection are generally recommended.
5. Which coating should be preferred in a marine environment?
Since salt water and humidity create a constant corrosion risk, galvanized (Class A/AA) or stainless steel ropes should be preferred.
6. What is the most common cause of port crane rope breakage?
Overloading, irregular lubrication, salt water corrosion, and sheave wear are the main causes of port crane rope breakage.
7. How much do port crane rope prices cost?
Due to their large diameter and special coating requirements, port crane ropes can be 30-50% more expensive than standard crane ropes.
8. Which safety standard applies to port cranes?
The ISO 4308 and EN 12385 standards define the selection and inspection criteria for port and container crane ropes.