5KN Corner Stringing Block with Deep Groove Sheave and Retaining Guard for Angle Tower Stringing

Skyward Corner Stringing Block for Angle Towers and Dead Ends

At an angle tower the conductor changes direction under full tension, and the side load tries to lift it out of the sheave. A standard suspension block is not built for that. This corner block uses a deeper, more enclosed groove and a retaining guard so the conductor stays seated while the line turns.

Product Overview

The block mounts on angle towers, dead-end structures and any point where the route makes a substantial turn. Its larger sheave increases the bend radius at the corner, spreading the side force over a longer section of conductor and reducing the point stress that can damage strands or an optical unit.

Corner block models

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

Design Features and Field Benefits

• Deep Guard Prevents Conductor Jump-Out: The enclosed sheave retains the conductor when side load builds at an angle, avoiding the dangerous snap-back that occurs when a conductor escapes a groove under tension.
• Larger Bend Radius Lowers Point Stress: A bigger sheave spreads the turning force over more conductor length, reducing the local bending stress that shortens strand fatigue life.
• Secure Mounting on Angle Structures: The bracket is designed for angle tower and dead-end hardware, so the block sits square to the resultant pull direction.
• Aluminium or Nylon Sheave: Aluminium for abrasive ACSR and repeated pulls, nylon for light weight and smooth contact on aluminium and OPGW.

Selection Guidance

• Confirm the line angle at the tower; sharper angles produce higher side load on the guard.
• Use nylon sheaves where the conductor surface must not be marked.
• Check that the mounting bracket matches the tower hardware before the crew climbs.

Typical Applications

• Angle tower conductor stringing
• Dead-end and termination work
• Route changes on distribution lines
• OPGW corner pulls

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.