5KN Rated Load Aerial Cable Stringing Block with 120x130mm Sheave and Sealed Bearings for OPGW Conductor Stringing Block Use

Aerial Cable Stringing Block for Overhead Power and Communication Cable

Aerial cable work covers more than power conductors: OPGW, ADSS and communication cable all need a block whose groove will not crush the cable jacket or the optical unit inside. This block is made for that range, with four sheave sizes from 120x130mm to 160x230mm for cables up to 200mm.

Product Overview

The frame houses a large diameter sheave on sealed bearings, and the groove is contoured so the cable sits in a smooth saddle rather than on an edge. Larger sheave options increase the bend radius for stiff cables and for OPGW, where a tight bend can introduce fibre attenuation.

Aerial cable block models

Dimensions and ratings are nominal. Confirm the exact model against the datasheet before ordering.

Design Features and Field Benefits

• Groove Designed for Cable Jackets and OPGW: The contoured groove spreads contact pressure and avoids the point loads that damage cable jackets and optical units during a pull.
• Four Sizes for 80mm to 200mm Cable: A single product family covers communication cable through to large bundled aerial cable, simplifying procurement.
• Sealed Bearings Reduce Pulling Force: Low rolling resistance means a smaller winch or tensioner can complete the pull, and the cable is subjected to less longitudinal strain.
• Corrosion Resistant Frame: Coated aluminium and sealed bearings handle UV, rain and temperature swings on overhead plant.

Selection Guidance

• Select the sheave by cable diameter so the cable sits fully in the groove.
• For OPGW, use the largest practical sheave to keep the bend radius generous.
• Confirm the 5KN rating against the pulling tension, especially on long spans.

Typical Applications

• OPGW and ADSS installation
• Communication cable stringing
• Distribution conductor pulls
• Static wire installation

Quality Control and Delivery

Units are assembled in an ISO 9001 certified workshop. Frames are checked for sheave alignment and axle straightness, load bearing parts are inspected before assembly, and finished units are function checked before packing. Export packing is a plywood case with a moisture barrier, and a 12 month warranty covers manufacturing defects. Inspection records and, on request, third party load test certificates can be supplied with the shipment.

Frequently Asked Questions

For project specific configurations, drawings or inspection requirements, send the conductor size, rated load and destination port with your enquiry.