The choice of roller is critical to minimize pulling tension and prevent cable jacket damage. For heavy HV cables in trenches, we recommend:

• Straight Line Rollers: Heavy-duty, wide-diameter steel rollers with smooth bearings placed every 2-3 meters along straight sections of the trench.

• Corner Rollers (Manhole Rollers): These are essential for any bend or corner. They feature multiple vertical and horizontal rollers to create a smooth, large-radius curve for the cable to pass through without kinking or abrasion. We offer both triple-roller and high-strength specialized corner roller systems.

• Bell Mouths / Conduit Feeders: These are placed at the entrance of ducts or conduits to provide a smooth, rounded edge, preventing the cable from scraping on sharp edges as it enters.

Using a combination of these high-quality rollers, supplied by Ningbo Changshi, can reduce the required pulling force by over 50%, protecting both the cable and your pulling equipment.