Three Purpose Stringing Block Conductor Stringing Block with Sitting Hanging Corner Modes and 20KN Rated Load Aluminium Nylon Sheave

Three Purpose Stringing Block for Sitting, Hanging and Corner Work

Most stringing jobs need more than one block type: a sitting block on the crossarm, a hanging block under the insulator string and a corner block where the route turns. This three purpose block covers all three with one frame, so the crew carries one tool instead of three.

Product Overview

The frame combines a bolt-down base for sitting work with a top lifting eye for suspension, and the sheave guard is deep enough to retain the conductor when the block is used as a corner block at an angle tower. Changing between modes takes a few minutes and needs no extra brackets.

Design Features and Field Benefits

• Three Modes Without Extra Hardware: A single frame serves as sitting, hanging and corner block. The base bolts to a crossarm, the top eye takes a shackle for suspension, and the enclosed guard keeps the conductor seated during angle changes.
• 20KN Rating Covers Distribution and Sub-transmission Work: At 20KN the block handles LGJ240 and smaller conductors with a working margin that suits typical distribution and 110kV sub-transmission stringing.
• Light Enough to Carry by Hand: At around 4KG the block can be carried up a tower by one lineman, which removes the need for a gin pole on short pulls.
• Aluminium or Nylon Sheave: The aluminium sheave resists wear on abrasive ACSR, while the nylon version is lighter and gentler on aluminium and OPGW surfaces.

Three purpose block models

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

Selection Guidance

• Choose the aluminium sheave for abrasive ACSR and high pull counts; choose nylon for lighter weight and smooth conductor contact.
• Check the corner mode angle against the guard opening before using it on sharp turns.
• Confirm the crossarm bolt spacing matches the base plate holes.

Typical Applications

• Distribution line stringing
• 110kV sub-transmission construction
• Angle tower conductor turns
• Maintenance and emergency restoration work

Frequently Asked Questions

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.

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