While often integrated into stringing equipment, these are also standalone "OPGW Installation Tools" that are critical:

• Non-Metallic, Lined Grooves: The grooves of our OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks are precisely machined and typically lined with specialized, soft yet durable materials like high-density polyurethane or nylon. This ensures a gentle, non-abrasive contact surface that prevents crushing, scratching, or deforming the OPGW's outer strands, which could indirectly damage the internal optical fibers.

• Large Sheave Diameter: This design ensures that the OPGW is bent at a radius significantly greater than its minimum permissible bending radius, eliminating stress on the optical fibers and preventing micro-bending losses.

• Smooth, Sealed Bearings: High-quality, sealed bearings ensure exceptionally smooth and consistent rotation, minimizing friction and drag on the OPGW, further protecting it during the pull.

These design considerations are fundamental to preserving the OPGW's structural and optical integrity throughout the entire stringing process.