822mm Large-Diameter Cable Pulley Block | Heavy-Duty Stringing Block for Overhead Line Construction
1. Overview
The 822mm Large-Diameter Cable Pulley Block is designed for guiding and supporting conductors during overhead transmission line stringing operations.
With its extra-large 822mm sheave diameter and reinforced frame, it provides smooth conductor passage, reduced friction, and excellent mechanical stability for medium- and high-voltage power line projects.
Suitable for long-span, mountain, and high-load stringing applications.
2. Product Definition
A cable pulley block is a guiding device used during conductor installation.
This model features:
- A large 822mm sheave for reduced bending stress
- Heavy-duty frame construction
- Compatibility with various conductor types (ACSR, AAAC, ACCC, OPGW)
It is commonly used with pulling machines, tensioners, and pilot rope systems.
3. Key Features
• Extra-Large 822mm Sheave
Provides a wide guiding radius that protects the conductor surface and improves pulling efficiency.
• Heavy-Duty Frame Structure
Built for strength and stability in demanding overhead line environments.
• Smooth Low-Friction Bearings
Ensures consistent rotation, reduces pulling resistance, and supports long-distance stringing work.
• Versatile Conductor Compatibility
Suitable for single or bundled conductors depending on groove customization.
• Optional Custom Configurations
Available options include groove material, hook styles, grounding rollers, and special coatings.
4. Advantages
• Reduced Stress on Conductors
The larger diameter minimizes conductor bending and surface abrasion.
• Built for Harsh Field Conditions
Ideal for mountain terrain, long-span towers, and high-tension applications.
• Long Service Life
Durable materials and sealed bearings provide extended operational use.
• Compatible With All Major Stringing Equipment
Works with hydraulic tensioners, pullers, pilot ropes, swivels, and overhead line accessories.
• Safe and Efficient Stringing
Stable frame geometry ensures reliable conductor guidance under heavy loads.
Applications
Suitable for:
Conductor installation for 110kV, 220kV, 330kV, 500kV transmission lines
Single or bundled conductor stringing
OPGW and ADSS cable guiding
Long-span and mountain line construction
Tower-to-tower pulling operations
Use with pullers, tensioners, and pilot rope systems
Technical Data
Item Number | Model | Number of Sheave | Rated Load(KN) | Weight(kg) | Features of Sheave |
10141 | SHDN822 | 1 | 30 | 40 | MC Nylon sheave |
10142 | SHSQN822 | 3 | 60 | 118 | Middle: cast steel sheave
Conductor:MC Nylon wheel |
10143 | SHWQN822 | 5 | 120 | 180 |
10146 | SHQ822 | 7 | 120 | 285 | Middle: cast steel sheave
Conductor:MC Nylon wheel |
10148 | SHJ822 | 9 | 150 | 445 |
FAQ
Q1: Can the sheave be aluminum, nylon, or rubber-lined?
Yes, all three options are available based on project requirements.
Q2: Can the block handle bundled conductors?
Yes, custom groove spacing and widths are available for 2–4 bundled conductors.
Q3: What is the maximum working load?
Standard models range from 40–80 kN, and we can upgrade based on your project needs.
Q4: Is the block compatible with grounding devices?
Grounding rollers and clamp-type grounding kits are optional.
Q5: Do you provide matching stringing equipment?
Yes, we offer tensioners, pullers, pilot ropes, swivels, rollers, and complete stringing tool sets.
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822mm Large-Diameter Heavy-Duty Cable Pulley Block with Nylon Wheel for Overhead Line Construction Images
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