5-20KN Rated Load Single Sheave Stringing Block with Ball Bearing Mounted Lightweight Aluminum or Nylon Sheave

5KN-20KN Single Sheave Stringing Block for Overhead Transmission Line Conductor Stringing

Product Overview

The Single Sheave Stringing Block from Suntech Power Tools is a premium conductor stringing solution for overhead transmission line construction. Available in 5KN to 20KN rated load capacities, this block is engineered to pull conductors smoothly on straight poles. The precision-machined sheave is mounted on sealed ball bearings ensuring minimal friction. Splicing sleeves, steel wire ropes, and connectors pass through the groove without obstruction. Available with aluminum alloy or MC nylon sheave options, weighing 1.5-15KG. Manufactured under ISO 9001:2008 standards. Hanger available in hook type or plate type.

Technical Specifications

Applications

· Pulling conductors on straight poles in overhead transmission line construction

· Stringing ACSR conductors LGJ25 to LGJ500 across various voltage levels

· Guiding steel wire ropes and splicing sleeves through the sheave groove

· Power distribution and transmission line stringing projects

· Utility construction and maintenance operations

Product Advantages

· Lightweight Aluminum or Nylon Sheave — Weighing only 1.5-15KG, significantly reducing crew fatigue. Aluminum sheave offers excellent wear resistance while MC nylon provides superior cable protection.

· Ball Bearing Mounted Design — Precision sealed ball bearings ensure smooth, silent rotation and minimal pulling resistance, extending cable life.

· Versatile Conductor Range — Accommodates LGJ25 through LGJ500 ACSR conductors for a wide spectrum of projects from rural lines to high-voltage corridors.

· Pass-Through Groove Design — Allows splicing sleeves, connectors, and steel wire ropes to pass through without obstruction, eliminating the need to stop and re-rig.

· ISO 9001:2008 Certified Quality — Manufactured under strict quality control with galvanized steel frame for corrosion resistance across multiple project cycles.

· Flexible Mounting Options — Available with hook type or plate type hanger for different pole and crossarm configurations.

Frequently Asked Questions (FAQ)

Q: What is the difference between aluminum and nylon sheave?

A: Aluminum sheave (SHD) offers higher wear resistance and heat dissipation for heavy-duty pulling. Nylon sheave (SHDN) is lighter with better cable protection, preferred for sensitive conductors like OPGW.

Q: What maximum conductor size?

A: SHD-400×80 accommodates LGJ400~500. For larger conductors, consult our engineering team for custom solutions.

Q: Can splicing sleeves pass through?

A: Yes, the groove is designed to allow sleeves, wire ropes and connectors to pass through without obstruction.

Q: Warranty?

A: Standard 1-year warranty covering manufacturing defects. With proper maintenance, blocks last through multiple major projects.

Q: Custom mounting?

A: Yes, hook type and plate type hangers available. Specify requirement when ordering.