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

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.

ABOUT XINYA

Cable Pulling & Transmission Line Stringing Equipment

Changshu Xinya Machinery Manufacturing Co., Ltd. (XINYA) is a manufacturer of equipment and tools for underground cable installation and overhead transmission line stringing.

Our main products include cable pulling winches, electric cable conveyors, hydraulic pullers and tensioners, stringing pulley blocks, cable rollers, drum handling equipment and related power construction tools.

With manufacturing and machining capabilities developed over decades, XINYA provides standard equipment as well as project-specific configurations for different cable sizes, pulling requirements and jobsite conditions.

We serve power utilities, contractors and equipment distributors in international markets, with a focus on reliable equipment, practical engineering support and responsive service.