916mm Large Diameter 50kN Rated Load Nylon Sheave Helicopter Stringing Block for Transmission Line Installation

SHDNZ916 Helicopter Stringing Blocks are designed for overhead transmission line construction and helicopter-assisted conductor stringing. With a 916mm large diameter nylon sheave, 50kN rated load, and single sheave structure, this cable pulling block is suitable for ACSR700-800 conductors. The nylon sheave helps reduce conductor wear during pulling, while the large wheel diameter helps reduce bending stress for safer and smoother stringing work.

During helicopter stringing and overhead line installation, contractors often face:

• High conductor bending stress during pulling
• Conductor surface wear caused by unsuitable sheave material
• Difficult stringing work in long-distance or mountain areas
• Need for stable conductor guiding during helicopter-assisted installation
• Heavy-duty load requirements for large ACSR conductors

These issues are mainly caused by:

• Small sheave diameter increasing conductor bending stress
• Metal sheaves causing higher friction or surface wear
• Insufficient load capacity for large conductors
• Poor block structure reducing stability during helicopter stringing
• Non-customized sheave surface not matching project requirements

The SHDNZ916 Helicopter Stringing Block solves these problems by:

• 916mm large diameter sheave → reduces conductor bending stress
• Nylon sheave design → helps reduce cable and conductor wear
• 50kN rated load → suitable for heavy-duty transmission line projects
• Single sheave structure → easy to handle and install on site
• Rubber-lined nylon sheave customization → available for better conductor protection

The stringing block guides the conductor through the rotating nylon sheave during pulling or helicopter-assisted stringing. The 916mm large diameter wheel reduces bending stress on the conductor. The nylon sheave reduces surface friction and helps protect the conductor from wear. The 50kN load capacity provides stable support for large ACSR conductor stringing.

SHDNZ916 Helicopter Stringing Blocks are widely used in:

• Transmission line construction
• Helicopter-assisted conductor stringing
• Overhead power line installation
• Long-distance conductor pulling
• Mountain area power line projects
• ACSR700-800 conductor stringing

Based on conductor size:
For ACSR700-800, SHDNZ916 with 916mm sheave is suitable.

Based on load requirement:
Choose 50kN rated load when the project involves large conductors and heavy-duty pulling.

Based on conductor protection:
Choose nylon sheave to reduce cable wear. Rubber-lined nylon sheave can be customized if higher conductor protection is required.

Based on construction method:
For helicopter stringing projects, select helicopter stringing blocks with suitable opening structure and conductor groove design.