508–916mm Large Diameter 20–150kN Rated Load 7 Sheaves MC Nylon Stringing Blocks for Transmission Line Cable Pulling

The 7 Sheaves MC Nylon Large Diameter Stringing Blocks are engineered for transmission line construction, overhead conductor stringing, and cable pulling applications. Featuring 508-916mm large diameter sheaves, 20-150kN rated load capacity, and a 7-sheave structure, these cable pulling blocks deliver stable support for multi-conductor stringing operations. The MC nylon sheaves significantly reduce conductor wear and friction during extended pulling tasks.

• High conductor bending stress during pulling operations
• Conductor surface damage caused by excessive friction
• Unstable pulling performance in multi-conductor stringing
• Uneven load distribution during overhead line installation
• Low efficiency in long-distance transmission line projects

• Small sheave diameter increasing bending stress
• Single sheave blocks unsuitable for bundle conductor work
• Unsuitable sheave material causing conductor wear
• Insufficient load capacity for heavy-duty projects
• Poor block configuration reducing pulling stability

The 7 Sheaves MC Nylon Stringing Blocks effectively address these challenges through:

• 508-916mm large diameter design – reduces conductor bending stress
• 7 sheaves structure – improves multi-conductor stringing stability
• MC nylon sheaves – reduce cable wear and surface friction
• 20-150kN rated load – suitable for heavy-duty power line construction
• Customizable design – adapts to different conductor and project requirements

The stringing block guides conductors through seven rotating MC nylon sheaves during pulling operations. The large diameter sheaves minimize bending stress on the conductor, while the 7-sheave structure ensures even load distribution, enhancing stability during multi-conductor stringing. The MC nylon material significantly reduces friction and protects the conductor surface throughout the operation.

• Transmission line construction
• Overhead conductor stringing
• Power line installation
• Multi-conductor pulling projects
• High-voltage transmission projects
• Long-distance cable pulling work

Based on conductor size:
For medium conductors, choose 508mm or 660mm sheaves.
For larger conductors, choose 822mm or 916mm sheaves.

Based on load requirement:
For standard projects, 20-60kN may be suitable.
For heavy-duty projects, choose 100-150kN rated load.

Based on conductor protection:
Choose MC nylon sheaves to reduce cable wear and protect the conductor surface.

Based on construction method:
For bundle conductor stringing, 7 sheaves provide better stability and load distribution.