"OPGW OHTLstringingequipment.com/Stringing-Blocks--Sheaves.html target='_blank'>Stringing Blocks" (sheaves) are critical "Cable Rigging Accessories" designed with specific features to prevent damage:

• Larger Sheave Diameter: Ensures the OPGW is bent at a radius greater than its minimum permissible bending radius, protecting the optical fibers.

• Precision Machined & Lined Grooves: The grooves are meticulously crafted and often lined with highly durable, non-abrasive materials like polyurethane or nylon. This provides a smooth, low-friction surface that prevents abrasion, crushing, or kinking of the OPGW's outer strands.

• Anti-Jump Guards: Designed to prevent the OPGW from accidentally dislodging from the groove during operation, especially in windy conditions or uneven terrain.

• Sealed Bearings: Ensure smooth, consistent rotation and minimal friction, reducing drag on the cable and enhancing the overall efficiency of the pull.