How do "Conductor Pulling Swivels" and "Pulling Eyes/Socks" contribute to the protection of delicate conductors like OPGW and large power cables?

2025-07-20

"Conductor Pulling Swivels" and "Pulling Eyes/Socks" are critical interfaces designed specifically to protect delicate conductors and large power cables during installation:

  • conductor pulling Swivels:

    • Eliminate Torsional Stress: Their primary function is to allow the pulling rope to rotate freely without transferring any twisting force to the conductor or cable. This is absolutely paramount for:

      • OPGW: Prevents the internal optical fibers from breaking or kinking due to twisting.

      • Bundled Conductors: Ensures that individual conductors maintain their correct relative positions within the bundle and do not spiral or birdcage.

      • Large Power Cables: Reduces stress on the cable jacket and internal conductors, preventing long-term damage from torsional fatigue.

    • Robust Bearing Systems: Modern swivels feature high-capacity, sealed thrust and ball bearings that operate smoothly under extreme axial and radial loads, ensuring consistent performance.

  • Pulling Eyes/Socks (Grips):

    • Distributed Grip for Protection:

      • Woven Mesh (Socks/Stockings): For single conductors or fiber optic cables, the woven mesh design distributes the pulling force evenly over a significant length of the conductor. As tension increases, the mesh tightens, providing a secure grip without localized crushing points that could damage insulation or delicate internal structures.

      • Multi-conductor pulling Eyes/Running Boards: For bundled conductors, specialized pulling eyes or running boards are used. These feature individual, articulated clamps or pockets for each conductor, ensuring even tension distribution across the entire bundle and preventing any single conductor from bearing excessive load or twisting.

    • Optimized Materials: Gripping surfaces are often made from materials (e.g., high-strength steel alloys, specialized polymers, or aramid fibers) chosen to maximize friction with the cable/conductor while minimizing abrasion or damage to the outer jacket.

    • Integrated Strain Relief: The design naturally provides strain relief by distributing the load, protecting the cable/conductor from concentrated stresses at the point of attachment.

    • Smooth Transitions: Designs often feature a smooth transition from the grip to the pulling rope connection, allowing for snag-free passage through OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks or conduits.

Together, these accessories form a comprehensive system that safeguards the integrity of conductors and cables, ensuring a successful and damage-free installation.

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