Manhole Entries Are Common Friction Points

In telecom cable installation, manhole entries are often one of the most difficult areas to control. Cables and pulling ropes must pass through fixed openings, narrow working spaces, and changing pulling angles. When the cable route shifts at the pithead or manhole edge, direct contact may occur between the cable jacket and the concrete or metal surface.

This friction can lead to jacket wear, unstable cable movement, and additional pulling resistance. For underground telecom infrastructure, fiber optic networks, and utility cable projects, the manhole entry is not only a passage point. It is also a key location where cable protection and guiding control should be considered.

Why Friction Risk Increases in Underground Projects

Modern telecom projects often involve longer routes, more ducts, and denser underground networks. Cables may need to pass through multiple manholes before reaching the final connection point. Each manhole creates a potential change in pulling direction.

If the cable is pulled without proper guiding equipment, the pulling rope and cable may rub against pithead edges. This can increase surface wear and make the installation path less predictable. In projects where cable jacket integrity is important, this risk should be addressed before pulling starts.

How Cable Pithead Rollers Help

A cable pithead roller is designed to protect both the cable and the pulling rope at underground pithead locations. It provides a rolling support surface so that the cable does not slide directly over the edge of the manhole.

The product data shows a 10KN rated load, which provides a measurable reference for underground cable pulling and conductor stringing work. The roller is also designed for cable diameters up to Φ150 mm, covering common telecom and utility cable sizes used in underground installation.

Key Selection Parameters

Rated Load

Rated load is one of the most important indicators for selection. A 10KN rating helps buyers match the roller with pulling conditions instead of relying on vague terms such as “heavy duty.”

Cable Diameter

The supported cable diameter is another practical parameter. Models SH130S and SH130SL are listed for maximum cable diameter Φ150 mm. If the cable is larger than the roller’s intended range, guiding may become unstable.

Product Weight

The two models weigh 12 kg and 13 kg. This weight range helps identify structural differences between model options and supports jobsite planning for transport, placement, and repeated use.

Conclusion

Friction at manhole entries remains a practical challenge in telecom underground cable installation. A cable pithead roller helps guide the cable and pulling rope across the entry point, reducing direct contact with pithead edges. For contractors and buyers, key selection data includes 10KN rated load, Φ150 mm maximum cable diameter, and 12–13 kg product weight. These measurable parameters make the product easier to evaluate for telecom, utility, and underground infrastructure projects.