Cable Extension Bracket

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Cable Extension Bracket

  • Extends cable / messenger attachment away from the pole face for proper sag and clearance
  • Standard 150 / 200 / 300 mm extension lengths in 6 mm carbon steel plate
  • Hot-dip galvanized to ASTM A-123 (≥86 μm)
  • Used in cable TV, telecom, and secondary distribution drops
Material: 6mm carbon steel plate
Surface: Hot-dip Galvanized ≥86μm
MOQ: 200 pcs / size
Lead Time: 25–35 days
Standard: ASTM A-123 / IEEE C135.6
Use: Cable / messenger offset mount
Download Datasheet

Technical Specifications

Three standard extensions (150 / 200 / 300 mm). Offset the cable mounting from the pole face by the bracket length plus the cable’s own clearance.
Catalog No.Extension (mm)Plate ThicknessBolt HoleWeight (kg)Surface
RAX-CEB-1501506 mmM160.9HDG
RAX-CEB-2002006 mmM161.2HDG
RAX-CEB-3003008 mmM162.1HDG
Mounting: single 9/16 in (M16) through-bolt at pole end. Cable-end: 11/16 in hole accepts standard cable clamp or messenger hardware. Custom extensions (100–500 mm): 5–7 day tooling, 200-piece minimum.

Application & Installation

Cable Extension Bracket application 1Cable Extension Bracket application 2Cable Extension Bracket application 3Cable Extension Bracket application 4

Where it is used

  • Cable TV and telecom messenger wire offset mounts
  • Secondary distribution drops on space-constrained poles
  • Joint-use poles where the cable must clear existing primary conductors
  • Street-light feeder cables routed away from the pole face
  • Aerial fiber-optic cable attachment with sag-clearance requirements

Installation sequence

  1. Mark the pole at the required cable elevation per drawing.
  2. Through-bore at 9/16 in for the M16 mounting bolt.
  3. Install the bracket with a square washer behind the pole and torque to 80 ft-lb.
  4. Attach the cable clamp or messenger hardware to the bracket’s outboard hole.
  5. Verify the bracket is plumb and the cable angle clears any adjacent conductors.

Buyer’s Guide: Cable Extension Bracket

1. When Do You Need a Cable Extension Bracket?

A cable extension bracket extends the cable attachment point away from the pole face by 150 to 300 mm. Used wherever a cable or messenger wire needs more clearance than a flush pole-mounted attachment provides — typical scenarios include joint-use poles carrying both primary distribution and telecom, or street-light feeder routing where the cable must clear existing conductors. The bracket is a simple bent steel plate with two holes: one for pole mounting (M16 through-bolt) and one for the cable clamp at the outboard end.

The 6 mm plate thickness handles cable loads typical of secondary distribution and telecom (up to ~2 kN tension on the cable). For heavier primary distribution or transmission applications, upgrade to the heavier 8 mm RAX-CEB-300 or specify a custom thickness. The most common installation error is mounting the bracket on the wrong face of the pole — always sight-line the outboard hole against the planned cable run before drilling.

2. How to Choose the Right Size

Pick by required offset distance.

  • RAX-CEB-150 — minimum offset, tight cable runs
  • RAX-CEB-200 — standard offset, the most-ordered size
  • RAX-CEB-300 — wide offset, heavier 8mm plate for cable TV trunk lines

Custom extensions from 100 to 500 mm with custom plate thickness available. 5–7 day tooling lead time, 200-piece minimum.

Frequently Asked Questions

How is this different from a Conduit Standoff Bracket?
A cable extension bracket carries a single cable or messenger at a fixed offset, with one outboard mounting hole. A conduit standoff bracket holds a pipe or conduit in a saddle-style clamp, often with multiple standoff positions along the pole. Different products for different applications.
What cable clamp pairs with this bracket?
Any standard 9/16 inch or 5/8 inch bolt-pattern cable clamp or messenger hardware. We supply matching clamps if you specify cable diameter and tension at order time.
Can I install this on a steel or concrete pole?
Yes — the M16 mounting bolt works through any drilled-and-tapped or pre-bored steel pole, and through a through-bolted concrete pole. On wood poles, swap the through-bolt for a 1/2 in lag screw.
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