Fibre cores in wire ropes are typically made from which material?

• A. Sisal
• B. Silca
• C. Rubber
• D. Sodium

Answer: (A)

Fibre cores in wire ropes are typically made from sisal, a natural fiber derived from the leaves of the agave plant. This material is chosen for its strength, flexibility, and ability to absorb moisture, which helps to reduce the chances of rust and wear on the wire strands. The use of a sisal core provides not only the necessary support for the wire strands but also enhances the overall performance of the wire rope, especially in lifting operations.

Sisal fibers offer a good balance of weight and durability, making them suitable for various applications in millwright rigging and lifting. Additionally, the natural cushioning properties of sisal can help protect the wire strands from damage during use, which is important in maintaining the integrity of the wire rope over time.