The Cable Extension Bracket suspends communication cables at a specified distance from utility poles, providing the necessary offset for overhead installations. Made from hot-dip galvanized steel meeting ASTM A-153 specifications, it supports messenger cables using a standard suspension clamp and 5/8-inch machine bolt for proper cable alignment and clearance.
The bracket features typical angle dimensions of 3 inches by 2-1/2 inches by 1/4 inch, with larger variations available at 3-1/2 inches by 2-1/2 inches by 5/16 inches. Extension range from pole center varies between 17-1/2 inches to 26 inches for smaller models and 26-1/2 inches to 44-1/2 inches for larger versions, with weights ranging from approximately 33.4 pounds to 62.23 pounds. Maximum working loads reach 3500 pounds depending on configuration.
Installation requires securing the bracket to the pole with a 5/8-inch or 3/4-inch machine bolt at the upper position and two 1/2-inch lag screws at the lower position. A suspension clamp (models SI-1740 or J1096) attaches to the underside using the adjustable 5/8-inch machine bolt for precise extension adjustments. Mounting hardware and clamps are ordered separately.
The product complies with CAO 6398 specification and holds Buy America Qualified status. Catalog numbers J7920 and J7921 identify specific configurations for various cable support requirements in utility and communication applications.
Cable Extension Bracket Manufacturer
RaxPower engineers and manufactures high-performance pole line hardware, including cable extension brackets that suspend cables at optimal distances from poles, essential for modern home technology infrastructures. As the definition of home evolves to incorporate advanced networking, security, and entertainment systems, our brackets are designed to:
- Simplify installations
- Reduce labor time
- Support code-compliant cable pathways
Founded in 2003 in Hebei Province, China, RaxPower leverages over 21 years of expertise and a 17,000-square-meter production facility to ensure precision and reliability. Our advanced hot forging technology and automated manufacturing processes deliver cable extension brackets with superior strength and accurate sizing, while strict quality control—including hot-dip galvanizing per ISO 1461 standards—guarantees durable, corrosion-resistant finishes.
This direct application of our engineering strengths results in products that enhance cable organization, minimize maintenance, and align with the growing demands of digital age home environments.
| Catalog Number | Angle Size | Extension From Center of Pole (in) | Weight (lb) | Material | Coating | Max Working Load (lb) |
|---|---|---|---|---|---|---|
| J7920 | 3″ x 2-1/2″ x 1/4″ | 17-1/2 to 26 | 33.4 | Steel | Hot-dip galvanized (ASTM A-153) | 3500 |
| J7921 | 3-1/2″ x 2-1/2″ x 5/16″ | 26-1/2 to 44-1/2 | 62.23 | Steel | Hot-dip galvanized (ASTM A-153) | 3500 |
Frequently Asked Questions (FAQS)
What is the purpose of a cable extension bracket?
The cable extension bracket is used to suspend cable at a distance from the utility pole, providing an offset for hanging a 5/8 machine bolt.
What materials and corrosion protection are used in construction?
The brackets are constructed of high quality steel and hot dip galvanized to meet ASTM A-153 specifications, ensuring superior corrosion resistance and long-term durability in various environmental conditions.
What industry standards and specifications do the brackets comply with?
The cable extension brackets comply with CAO 6398 specification and feature galvanized coatings per ASTM A-153, aligning with rigorous utility and safety standards.
What sizes and extension ranges are available?
Available sizes include angle dimensions of 3 x 2-1/2 x 1/4 and 3-1/2 x 2-1/2 x 5/16 , with extension ranges from 17-1/2 to 26 or 26-1/2 to 44-1/2 from the center of the pole.
How is the bracket installed on a utility pole?
Installation involves mounting with a 5/8 or 3/4 machine bolt at the upper position and two 1/2 drive screws or lag screws at the lower position. Additional hardware such as a suspension clamp (e.g., straight suspension clamp, SI-1740, J1096, or 7903 messenger clamp) and washers must be ordered separately.
What is the maximum working load capacity?
The maximum working load capacity is up to 3500 pounds for certain models.
How do you support projects requiring high-volume orders?
We offer standard packaging and pallet quantities, such as 30 units per pallet, to efficiently handle large-scale project demands and ensure reliable supply chain management.
Get A Quick Quotation Today
