Which rope is used for heavy duty hoisting？

For heavy-duty hoisting, selecting the right wire rope is crucial to ensure safety, durability, and efficiency. Below are the most commonly used wire ropes for such applications:

1. Rotation-Resistant Wire Rope (Non-Rotating Wire Rope)

These ropes are designed to prevent load rotation, making them ideal for single-line or multi-line lifting operations.

(1) 35WXK7 (High-Performance Rotation-Resistant Wire Rope)

• Structure: 35 outer strands with an independent wire rope core (IWRC)
• Features:
  • High tensile strength, suitable for heavy loads.
  • Excellent rotation resistance, preventing hook rotation under load.
  • Good flexibility, making it easy to pass through pulleys.
• Applications: Tower cranes, port cranes, offshore platform cranes, and large mobile cranes.

(2) 18X7 / 19X7 (Medium Rotation-Resistant Wire Rope)

• Structure: 18 or 19 outer strands with a 7-strand steel core.
• Features:
  • Moderate rotation resistance, suitable for multi-line lifting systems.
  • Good crush resistance, suitable for drum winding.
• Applications: Bridge cranes, offshore cranes, and construction hoists.

(3) 24X7 (Flexible Rotation-Resistant Wire Rope)

• Structure: 24 outer strands with a 7-strand core.
• Features:
  • Suitable for high-lift operations, minimizing torsional deformation.
  • High flexibility, making it ideal for multi-sheave systems.
• Applications: Shipboard cranes, large port cranes, high-rise tower cranes.

2. High-Strength Wire Rope (Compacted & Plastic-Coated Rope)

For heavy-duty hoisting applications, compacted or plastic-coated ropes enhance durability and wear resistance.

(4) 8XK26WS-EPIWRC (Plastic-Coated Wire Rope)

• Structure: 8 strands × 26 wires + EPIWRC (Plastic-Coated Independent Wire Rope Core).
• Features:
  • Plastic coating improves wear resistance and prevents core wire loosening.
  • Ideal for harsh environments, such as marine and port lifting.
  • High breaking load, ensuring greater safety.
• Applications: Ship cranes, deep-sea drilling platforms, offshore wind farm installations.

3. Standard Hoist Wire Rope

For general heavy lifting, standard wire ropes are widely used in various cranes.

(5) 6X36WS-IWRC (Durable Hoist Wire Rope)

• Structure: 6 strands × 36 wires with an independent wire rope core (IWRC).
• Features:
  • High abrasion resistance, suitable for frequent lifting.
  • Excellent bending fatigue resistance, ideal for drum winding.
• Applications: Bridge cranes, construction site hoists, port lifting equipment.

Key Factors for Wire Rope Selection

1. Load Capacity:
   • For ultra-heavy lifting (above 50 tons): 35WXK7 or 8XK26WS-EPIWRC.
   • For medium loads (10-50 tons): 18X7, 19X7, or 6X36WS-IWRC.
   • For standard lifting (below 10 tons): 6X36WS-IWRC.
2. Working Environment:
   • Marine or corrosive environments: Use galvanized or plastic-coated ropes (EPIWRC), such as 8XK26WS-EPIWRC.
   • High-altitude lifting or long-distance hoisting: Use high-performance rotation-resistant ropes (35WXK7).
   • Frequent heavy-duty operations: Opt for compacted ropes, which have higher durability.
3. Crane Type:
   • Tower cranes/construction hoists → 35WXK7.
   • Mobile cranes/truck cranes → 18X7, 19X7.
   • Ship cranes/port cranes → 8XK26WS-EPIWRC.

Conclusion

• If your application involves ultra-heavy high-altitude lifting, choose 35WXK7.
• If corrosion resistance and durability are key, select 8XK26WS-EPIWRC.
• For general hoisting, 6X36WS-IWRC is a reliable option.

Would you like a specific recommendation based on your crane type or working conditions?