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:
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Overhead transmission line stringing (110kV–500kV)
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Single-conductor installation for ACSR, AAAC, ACCC
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Pilot rope to conductor stringing transition
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Tower-to-tower pulling operations
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Mountain and long-span construction projects
Single sheave Conductor Stringing Blocks
| Item No. | Model | ACSR Size Range (mm²) | Working Load (KN) | Weight (kg) | Material of Sheave |
| 10171 | SHD-120x30 | 25-70 | 5 | 2 | Aluminum Alloy |
| 10172 | SHD-160x40 | 70-95 | 10 | 3.2 |
| 10173 | SHD-200x40 | 95-120 | 15 | 3.8 |
| 10174 | SHD-200x60 | 120-150 | 15 | 4.2 |
| 10175 | SHD-250x40 | 120-150 | 20 | 5.2 |
| 10176 | SHD-250x60 | 150-180 | 20 | 5.5 |
| 10177 | SHD-270x60 | 180-240 | 20 | 6.8 |
| 10178 | SHD-320x60 | 240-300 | 20 | 10.5 |
| 10179 | SHD-400x80 | 300-400 | 20 | 12 |
| 10101 | SHD508 | 300-400 | 20 | 18 | Aluminum lined with neoprene |
| 10121 | SHD660 | 400-500 | 20 | 30 |
| 10191 | SHDN-120x30 | 25-70 | 5 | 1.5 | Nylon |
| 10192 | SHDN-160x40 | 70-95 | 10 | 2.4 |
| 10193 | SHDN-200x40 | 95-120 | 15 | 2.6 |
| 10194 | SHDN-200x60 | 120-150 | 15 | 3.1 |
| 10195 | SHDN-250x40 | 120-150 | 20 | 3.7 |
| 10196 | SHDN-250x60 | 150-180 | 20 | 3.9 |
| 10197 | SHDN-270x60 | 180-240 | 20 | 4.4 |
| 10198 | SHDN-320x60 | 240-300 | 20 | 7.5 |
| 10199 | SHDN-400x80 | 300-400 | 20 | 8 |
| 10104 | SHDN508 | 300-400 | 20 | 16 | Nylon, optional can be lined with neoprene |
| 10124 | SHDN660 | 400-500 | 20 | 24 |
| 10131 | SHDN750 | 500-600 | 30 | 32 |
| 10141 | SHDN822 | 600-700 | 30 | 38 |
| 10151 | SHDN916 | 700-800 | 50 | 51 |
| 10165 | SHDN1040 | 800-900 | 50 | 60 |
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.
Product Tags:
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SHDN660 Steel Frame Single Conductor Stringing Block with 660mm Sheave Diameter for Transmission Line Pulley Images
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