SHDN660 Steel-Frame Single Conductor Stringing Block | 660mm Transmission Line Pulley

1. Overview

The SHDN660 Steel-Frame Single Conductor Stringing Block is designed for guiding and supporting conductors during overhead transmission line construction. With a durable steel frame and a 660mm diameter sheave, this model ensures smooth conductor passage, reduced friction, and reliable performance for medium- and high-voltage line projects.

It is widely used in 110kV–500kV transmission line stringing operations.

2. Product Definition

A stringing block is a pulley-type guiding tool used to support and direct conductors during line installation.
The SHDN660 model features:

• A heavy-duty steel frame
• A single-groove sheave for single conductor applications
• High mechanical strength for demanding field use

3. Key Features

• 660mm Sheave Diameter

Provides a large guiding radius, reducing conductor bending stress and protecting the surface during pulling.

• High-Strength Steel Frame

Offers excellent load-bearing capacity and long-term durability in harsh construction environments.

• Low-Friction Smooth Bearings

Ensures efficient rotation, lowers pulling resistance, and improves stringing efficiency.

• Designed for Single Conductor

Suitable for ACSR, AAAC, ACCC, and similar conductor types.

• Customizable Groove & Hooks

Options include aluminum sheaves, nylon sheaves, grounding rollers, swivel hooks, and connection fittings.

4. Advantages

• High structural strength for overhead line work

The steel frame design provides enhanced rigidity and stability.

• Protects conductor surface during installation

Smooth sheave rotation reduces wear and prevents conductor scratching.

• Compatible with various stringing equipment

Works with hydraulic tensioners, pullers, pilot rope systems, and tower-mounted fittings.

• Reliable for long-span or mountain terrain projects

Stable performance under continuous load conditions.

• Long service life

Engineered for extended field use with minimal maintenance.

5.Applications

Suitable for:

• Overhead transmission line stringing (110kV–500kV)

• Single-conductor installation for ACSR, AAAC, ACCC

• Pilot rope to conductor stringing transition

• Tower-to-tower pulling operations

• Mountain and long-span construction projects

Single sheave Conductor Stringing Blocks

Note:

• Hook fitting, round eye fitting, and clevis fitting are optional, please specify when ordering. Customized blocks could be supplied on request.
• The data in the model means the outer diameter of sheave X width of sheave (mm).
• All the sheaves are mounted on ball bearings. The frame of blocks is made in galvanized steel.

FAQ

Q1: Can the sheave material be customized?
Yes, aluminum, nylon, or rubber-lined sheaves are available.

Q2: What conductor sizes are compatible?
We can customize the groove to match your specific conductor diameter.

Q3: Can the block work with grounding devices?
Grounding rollers and accessories are optional.

Q4: What is the typical working load?
Standard load is 30–50 kN, but it can be upgraded based on project needs.

Q5: Do you offer matching stringing tools?
Yes. Pullers, tensioners, rollers, swivels, and full stringing equipment sets are available.