Answer from Ningbo Changshi: Tight bends are one of the most challenging aspects of underground cable pulling, as they are a major source of friction and potential cable damage. To navigate them, we recommend using a combination of specialized tools:

• Corner underground-Cable-Laying-Equipment-and-Tools.html target='_blank'>cable rollers: These are specifically designed with a curved frame and multiple rollers to guide the cable smoothly through 90-degree or other sharp turns in a manhole or vault. They protect the cable's jacket by maintaining a larger bending radius than the tight corner of the conduit itself.

• Fiberglass Duct Rods: For initially installing a pilot line in a conduit with multiple bends, a fiberglass rod is invaluable. These rods are semi-rigid and flexible enough to be pushed through the curves of the duct, making them perfect for fishing a line where a vacuum blower might not be able to.

• Lubrication: While not a tool in the traditional sense, using a high-performance, water-based cable pulling lubricant is a non-negotiable part of the process. It drastically reduces friction at bends and throughout the run, significantly lowering the required pulling tension and protecting the cable.

Using these specialized tools together ensures that the cable safely and smoothly transitions through all bends in the underground route.