Product Specification

Double Sheave Stringing Block for Overhead Line Construction | Dual-Pulley Cable Guide for Transmission Projects

Overview

The Double Sheave Stringing Block is a durable and high-efficiency pulley tool designed for guiding conductors, OPGW, ADSS, and communication cables during overhead transmission line construction. With two precision-machined sheaves, it reduces friction, improves cable alignment, and ensures smooth and safe stringing operations across long spans and challenging terrain.

This dual-pulley block is widely used by power utility companies, EPC contractors, and line construction teams for 11kV–500kV transmission projects.

What Is a Double Sheave Stringing Block?

A Double Sheave Stringing Block is a cable-guiding pulley equipped with two sheaves to support and guide conductors during stringing or sagging work. The dual-sheave design offers improved load distribution, smoother running, and reduced conductor wear, making it ideal for multi-layer cable pulling or heavier loads.

Key Features

Dual Sheave Design

• Two balanced sheaves for smoother cable entry and reduced tension

• Suitable for single or bundled conductors

High-Strength Aluminum Alloy or Nylon Sheaves (Optional)

• Lightweight, corrosion-resistant aluminum

• Wear-resistant nylon for fiber optic and softer cables

Robust Frame Construction

• Heavy-duty steel frame with anti-rust coating

• High structural strength for long-term outdoor operation

Smooth Ball-Bearing Operation

• Precision bearings ensure low-friction rotation

• Enhances cable protection during stringing

Versatile Hook Options

• Hook type, clevis type, or swivel type

• Compatible with various field applications

Advantages

Excellent Cable Protection

Smooth sheave surfaces minimize abrasion and reduce conductor damage.

High Load-Bearing Capacity

Engineered for high-tension transmission line pulling operations.

Long Service Life

Corrosion-resistant materials ideal for harsh outdoor environments.

Flexible Configuration

Available in different sheave diameters and groove types for ACSR, AAAC, OPGW, ADSS, etc.

Easy to Install & Operate

Lightweight structure for quick setup in the field.

Applications

• Overhead transmission line construction (11kV to 500kV)

• Conductor stringing and sagging operations

• OPGW/ADSS cable installation

• Communication line projects

• Mountain, valley, and long-span power line stringing

• Electrical utility and EPC contractor field work

Technical Data

Main Components

Cable sheave with hook, cable block and tackle with hook
Uses: Apply to leading and paying off large section conductor. Splicing sleeve can pass through from the groove.
Specification: Hanger includes hook type, plate type and ring type. This is need indicated when customer place order. Special size can be customized.

FAQ

1. What types of cables can this double sheave pulley handle?

It can handle ACSR, AAAC, OPGW, ADSS, communication cables, and bundled conductors.

2. Is the sheave material customizable?

Yes. Aluminum alloy is ideal for high-tension steel conductors; nylon is recommended for optical fiber cables.

3. What load capacity does it support?

Typical models range from 10 kN to 40 kN. Customized higher loads are also available.

4. Can the hook be changed?

Yes. Hook, clevis, and swivel types are all available.

5. Is it suitable for long-span or mountain transmission lines?

Absolutely. The dual-sheave structure ensures stable performance in challenging terrain.

6. Do you offer single, triple, and five-sheave blocks too?

Yes, complete conductor stringing block series can be provided.