660 mm Diameter Bundled Conductor Pulley Block with Nylon Wheel | Heavy-Duty Stringing Pulley
1. Overview
The 660 mm Bundled Conductor Pulley Stringing Block with Nylon Wheel is a high-performance pulley block designed for overhead transmission line construction.
Its large 660 mm diameter sheave allows smooth passage of bundled conductors while minimizing friction and conductor surface damage.
The nylon wheel ensures low friction and extended service life, making it ideal for medium- to high-voltage conductor stringing projects.
2. Product Definition
A stringing pulley block is a mechanical device used to guide and support conductors during installation.
This model features:
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660 mm large-diameter sheave
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Durable nylon wheel for smooth operation
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Suitable for double or triple bundled conductors
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High-strength steel or aluminum alloy frame for stability and long service life
3. Key Features
• Large 660 mm Diameter Sheave
Ensures smooth conductor passage, reducing friction and preventing conductor damage.
• Nylon Wheel / Sheave
Low-friction material protects conductors and extends pulley lifespan.
• Heavy-Duty Frame
Steel or aluminum alloy frame ensures stability, durability, and safe operation.
• Multi-Bundle Compatibility
Supports double and triple bundled conductors, optimizing stringing efficiency.
• Portable & Easy to Install
Lightweight design allows quick deployment on transmission towers and construction sites.
4. Advantages
• Protects Conductor Surface
Smooth nylon sheave minimizes scratches and bending stress during pulling.
• Reliable for High-Voltage Lines
Ideal for 110 kV, 220 kV, 330 kV, and 500 kV transmission projects.
• Reduces Labor & Time
Large-diameter sheave and low-friction nylon wheel improve efficiency and reduce pulling effort.
• Long Service Life
Durable frame and nylon wheel provide years of reliable performance.
• Compatible with Standard Stringing Tools
Can be used alongside tensioners, pullers, and pilot rope systems.
6. Applications
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Bundled conductor stringing in overhead transmission lines
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Medium- and high-voltage line construction
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Tower-to-tower conductor guidance
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Use with pilot ropes, pullers, and tensioners
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Long-span and complex terrain conductor installation
Specification:
Single Wheel-Wheel material aluminum or Nylon, and it could be covered by rubber.
| Model | Wheel size Diameter x Width (mm) | Conductor size (mm2) | Rated load (kN) | Weight (kg) | Wheel material |
| SHD-120X30 | 120x30 | 25~70 | 5 | 2.1 | Aluminum |
| SHD-160X40 | 160X40 | 95~120 | 10 | 3.1 |
| SHD-200X40 | 200X40 | 150~240 | 15 | 3.7 |
| SHD-200X60 | 200X60 | 150~240 | 15 | 4.1 |
| SHD-250X40 | 250X40 | 150~240 | 20 | 5.1 |
| SHD-250X60 | 250X60 | 300~400 | 20 | 5.4 |
| SHD-270X60 | 270X60 | 300~400 | 20 | 6.7 |
| SHD-320X60 | 320X60 | 300~400 | 20 | 10.4 |
| SHD-400X80 | 400X80 | 400~500 | 20 | 11.9 |
| SHDN-120X30 | 120x30 | 25~70 | 5 | 1.5 | Nylon |
| SHDN-160X40 | 160X40 | 95~120 | 10 | 2.3 |
| SHDN-200X40 | 200X40 | 150~240 | 15 | 2.5 |
| SHDN-200X60 | 200X60 | 150~240 | 15 | 3.0 |
| SHDN-250X40 | 250X40 | 150~240 | 20 | 3.6 |
| SHDN-250X60 | 250X60 | 300~400 | 20 | 3.8 |
| SHDN-270X60 | 270X60 | 300~400 | 20 | 4.3 |
| SHDN-320X60 | 320X60 | 300~400 | 20 | 7.5 |
| SHDN-400X80 | 400X80 | 400~500 | 20 | 8 |
| SHD-508X75 | 508X75 | ≤400 | 20 | 22.3 | Aluminum |
| SHD-660X100 | 660X100 | ≤500 | 20 | 30 |
| SHDN-508X75 | 508X75 | ≤400 | 20 | 18 | Nylon |
| SHDN-660X100 | 660X100 | ≤500 | 20 | 20 |
| SHDN-830X110 | 830X110 | ≤630 | 30 | 25 |
| SHDN-916X110 | 916X110 | ≤800 | 50 | 45 |
| SHDN-1040X125 | 1040X125 | ≤1000 | 55 | 105 |
Three Wheels-The pulleys are suitable for string two or three bundled conductor lines.
| Model | Wheel size Diameter x Width (mm) | Conductor size (mm2) | Rated load (kN) | Weight (kg) | Wheel material |
| SHS-508X75 | 3X508X75 | ≤400 | 40 | 85.5 | Middle steel Two Nylon |
| SHS-660X100 | 3X660X100 | ≤500 | 20 | 106 |
| SHSN-508X75 | 3X508X75 | ≤400 | 40 | 60 | Nylon |
| SHSN-660X100 | 3X660X100 | ≤500 | 40 | 85 |
| SHSN-830X110 | 3X830X110 | ≤630 | 60 | 100 |
| SHSN-916X110 | 3X916X110 | ≤800 | 80 | 140 |
| SHSN-1040X125 | 3X1040X125 | ≤1000 | 110 | 210 |
Five Wheels-The pulleys are suitable for string four bundled conductor lines.
| Model | Wheel size Diameter x Width (mm) | Conductor size (mm2) | Rated load (kN) | Weight (kg) | Wheel material |
| SHW-508X75 | 5X508X75 | ≤400 | 40 | 85.5 | Middle steel Two Nylon |
| SHW-660X100 | 5X660X100 | ≤500 | 40 | 106 |
| SHWN-508X75 | 5X508X75 | ≤400 | 40 | 60 | Nylon |
| SHWN-660X100 | 5X660X100 | ≤500 | 40 | 85 |
| SHWN-830X110 | 5X830X110 | ≤630 | 60 | 100 |
| SHWN-916X110 | 5X916X110 | ≤800 | 80 | 140 |
| SHWN-1040X125 | 5X1040X125 | ≤1000 | 110 | 210 |
7. FAQ
Q1: Can this pulley block handle double or triple bundled conductors?
Yes, it supports both double and triple bundled configurations.
Q2: What is the advantage of a nylon wheel?
Nylon reduces friction, protects the conductor surface, and increases pulley durability.
Q3: Is the 660 mm sheave suitable for high-voltage lines?
Yes, it is ideal for 110 kV, 220 kV, 330 kV, and 500 kV projects.
Q4: Can the frame material be customized?
Yes, steel or aluminum alloy frames are available based on project requirements.
Q5: Are custom features available?
Yes, groove spacing, sheave quantity, and optional accessories like swivel hooks and grounding rollers can be customized.
Product Tags:
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660mm Diameter Heavy-Duty Bundled Conductor Pulley Block with Nylon Wheel for Transmission Line Stringing Images
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