Lingkai's Tandem Sheave Stringing Blocks Made in China are used with conductors ACSR 300~500 and ACSR 630, both made in China by Ningbo Lingkai supplier. These blocks increase the breaking load by distributing forces on both pulleys. They can be detached and used as a standard model. Tandem stringing block wheels are available in 508mm, 660mm, and 822mm diameters.
The quality Tandem sheave stringing blocks 1 Years Warranty which is provided Lingkai are two connecting rods that ensure stability and control over the position of the wheels. Special tandem stringing pulleys built with a steel galvanized joke connecting two standard pulleys.
Our Durable Tandem sheave stringing blocks boost the breaking load by dispersing stresses over both pulleys. The stringing block can be disconnected and reused as a regular model.
Wheels, sectors, and jokes are completely interchangeable with the normal model. Different variants are available upon request, including helicopters.
Item No. |
Model |
Work Load (KN) |
Conductor Range (mm) |
Sheave Size mm (O.D. X I.D. X W) |
Material of sheave |
Weight (kg) |
10152TB |
SHSQN916TB |
75 |
≤40 mm |
Φ916×φ800×110 |
Nylon |
250 |
Item No. |
Model |
Work Load (KN) |
Conductor Range (mm) |
Sheave Size mm (O.D. X I.D. X W) |
Material of sheave |
Weight (kg) |
10141TB |
SHDN822TB |
40 |
≤36 mm |
Φ822×Φ710×110 |
Nylon |
112 |
Application: The Tandem Sheave Stringing Blocks are used for stringing single conductor or OPGW on tension tower with big span section or on corner tower. It is composed with double sheave rollers.
Item No. |
Model |
Rated Load (KN) |
Conductor Size Range (mm²) |
Weight (kg) |
Material |
10211 |
SHR-2.5L |
25 |
ACSR 300-500 |
9.5 |
Aluminum |
10212 |
SHR-2.5N |
25 |
8 |
Nylon |