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.

Changshu Xinya Machinery Manufacturing Co., Ltd.is located in the beautiful and rich Chinese historical and cultural city - Changshu, Jiangsu. It is on the east of Shanghai, on the southern edge of Suzhou, west of Wuxi, north of the Yangtze River.It is convenient for transportation.

Changshu Xinya Machinery Manufacturing Co., Ltd. is founded in the eighties of last century, specializing in the production of various electrical equipment, forklift mast and so on. And in 2010,we passed through the ISO9001: 2000 and BV certification.

With support of customers, our products  have sold all over the word. According to the needs of the majority of users, we will increase the investment in science and technology,constantly develop new products, strengthen and improve product performance to meet the requirements of our customers.

Our main products are 1 ton, 2 tons, 3 tons, 5 tons, 8 tons JJM series cable pulling winch, hydraulic tensioner,hydraulic puller,cable laying euiqpments,high pressure hydraulic pump with hydraulic crimping tools,come along clamp,stringing pulley, cable roller and cable drum trailer, steel bar, aluminum alloy gin pole , And other power construction equipment and a variety of large tonnage forklift mast and a variety of special requirements of non-standard gantry.

Manufacturing process is complete, strong technical force, processing capacity is complete, finished products are strictly standardized technical quality testing, a sound quality control and after-sales service system, formed a certain scale of power equipment production capacity. Our existing variety of equipment are more than 80 sets, processing capacity, more sophisticated equipment (processing centers and CNC equipment 15 sets) to ensure product quality.