660mm Triple-Sheave Nylon Stringing Block for Pilot Wire Rope |
Overhead Line Stringing Tool
1. Overview
The 660mm 3 Sheave Nylon Stringing Block is specially designed for
pilot wire rope guiding during overhead transmission line
construction.
Its three-sheave design and high-strength nylon wheels ensure
smooth rope running, reduced friction, and excellent protection
during conductor or pilot rope stringing.
Ideal for 110kV–500kV line projects, this block is widely used for
rope traction from tower to tower before pulling conductors.
2. Product Definition
A Stringing Block is a wheel-type guiding tool used for pulling
pilot wire rope or conductors along power transmission lines.
This model features:
660mm outer diameter nylon sheaves
Three-groove design for stable rope guiding
Suitable for steel pilot rope / PP rope / synthetic pulling rope
3. Key Features
Triple-Sheave Design for Stable Guiding
Three grooves help the pilot rope pass smoothly without jumping or
twisting.
High-Density Nylon Sheaves
Reinforced Aluminum Alloy Frame
Lightweight yet high-strength structure ensures safety in
heavy-duty field use.
Smooth, Low-Resistance Bearings
Improves pulling efficiency and reduces load on tensioners and
pullers.
Wide Rope Compatibility
Ideal for steel pilot wire rope, PP rope, composite rope, and
traction lines.
4. Advantages
Reduced Wear on Pilot Rope
Nylon grooves prevent friction burn and minimize rope deformation.
High Working Load for Mountain or Long-Span Lines
Designed for tough environments and continuous operation.
Lightweight for Easy Tower Mounting
Technicians can lift and install quickly on various tower
structures.
Versatile for Pilot Rope & Conductor Stringing
Applicable to both pilot rope guiding and small conductor pulling.
Customizable Options
Groove diameter, frame type, hook connection, and grounding roller
can be customized.
6. Applications
Used in:
Pilot rope stringing for 110kV / 220kV / 330kV / 500kV transmission
lines
Tower-to-tower rope pulling operations
Conductor and OPGW preliminary guiding
Long-distance and mountain terrain line construction
Use with hydraulic pullers and tensioners
Technical Data
Product No. | Model Type | Rated Load(KN) | Applicable Conductor ACSR(mm2) | Weight(kg) | Sheave No. | Outside Dia*Groove Dia* Sheave Width(mm) |
80317 | SHDN-660*100 | 20 | ≤500 | 20 | 1 | Φ660*Φ560*100 |
80320 | SHSQN-660*100 | 40 | 85 | 3 |
80321 | SHWQN-660*100 | 60 | 110 | 5 |
FAQ
Q1: Can the sheave material be changed to aluminum?
Yes. We provide aluminum sheaves, MC nylon, or rubber-lined grooves
upon request.
Q2: What rope diameter is compatible?
We can customize the groove to match 8–18mm pilot rope or your
project specifications.
Q3: Can the working load be upgraded?
Yes, working load can be adjusted from 20kN to 60kN depending on
frame design.
Q4: Do you supply matching pullers and tensioners?
Yes. We can supply full sets of stringing equipment for turnkey
projects.
Q5: What is the typical lifespan?
Normal working conditions allow 8–12 years of service life.
